./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.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/06-symbeq_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --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 20:00:40,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:00:40,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:00:40,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:00:40,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:00:40,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:00:40,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:00:40,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:00:40,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:00:40,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:00:40,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:00:40,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:00:40,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:00:40,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:00:40,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:00:40,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:00:40,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:00:40,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:00:40,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:00:40,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:00:40,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:00:40,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:00:40,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:00:40,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:00:40,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:00:40,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:00:40,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:00:40,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:00:40,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:00:40,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:00:40,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:00:40,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:00:40,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:00:40,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:00:40,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:00:40,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:00:40,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:00:40,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:00:40,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:00:40,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:00:40,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:00:40,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:00:40,364 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:00:40,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:00:40,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:00:40,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:00:40,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:00:40,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:00:40,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:00:40,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:00:40,368 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:00:40,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:00:40,369 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:00:40,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:00:40,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:00:40,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:00:40,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:00:40,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:00:40,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:00:40,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:00:40,370 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:00:40,371 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:00:40,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:00:40,371 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:00:40,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:00:40,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:00:40,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:00:40,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:00:40,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:00:40,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:00:40,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:00:40,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:00:40,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:00:40,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:00:40,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:00:40,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:00:40,374 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:00:40,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:00:40,374 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:00:40,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:00:40,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:00:40,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:00:40,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:00:40,675 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:00:40,675 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:00:40,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-31 20:00:41,910 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:00:42,177 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:00:42,178 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-31 20:00:42,195 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242e905ef/8cdb8d5c007f45488e29358cef8dbe6e/FLAG9fda2dd84 [2023-08-31 20:00:42,208 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242e905ef/8cdb8d5c007f45488e29358cef8dbe6e [2023-08-31 20:00:42,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:00:42,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:00:42,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:00:42,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:00:42,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:00:42,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109f8285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42, skipping insertion in model container [2023-08-31 20:00:42,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:00:42,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:00:42,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:00:42,612 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:00:42,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:00:42,735 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:00:42,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42 WrapperNode [2023-08-31 20:00:42,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:00:42,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:00:42,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:00:42,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:00:42,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,811 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2023-08-31 20:00:42,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:00:42,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:00:42,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:00:42,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:00:42,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:00:42,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:00:42,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:00:42,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:00:42,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (1/1) ... [2023-08-31 20:00:42,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:00:42,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:00:42,914 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 20:00:42,940 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 20:00:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:00:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:00:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:00:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:00:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:00:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:00:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:00:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:00:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:00:42,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:00:42,961 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 20:00:43,146 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:00:43,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:00:43,401 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:00:43,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:00:43,407 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 20:00:43,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:00:43 BoogieIcfgContainer [2023-08-31 20:00:43,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:00:43,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:00:43,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:00:43,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:00:43,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:00:42" (1/3) ... [2023-08-31 20:00:43,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440b24c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:00:43, skipping insertion in model container [2023-08-31 20:00:43,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:00:42" (2/3) ... [2023-08-31 20:00:43,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440b24c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:00:43, skipping insertion in model container [2023-08-31 20:00:43,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:00:43" (3/3) ... [2023-08-31 20:00:43,417 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-31 20:00:43,424 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:00:43,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:00:43,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 20:00:43,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:00:43,517 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:00:43,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 98 transitions, 201 flow [2023-08-31 20:00:43,594 INFO L130 PetriNetUnfolder]: 4/97 cut-off events. [2023-08-31 20:00:43,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:00:43,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 4/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-31 20:00:43,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 98 transitions, 201 flow [2023-08-31 20:00:43,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 97 transitions, 197 flow [2023-08-31 20:00:43,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:00:43,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 97 transitions, 197 flow [2023-08-31 20:00:43,618 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 97 transitions, 197 flow [2023-08-31 20:00:43,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 97 transitions, 197 flow [2023-08-31 20:00:43,639 INFO L130 PetriNetUnfolder]: 4/97 cut-off events. [2023-08-31 20:00:43,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:00:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 4/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-31 20:00:43,642 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-31 20:00:45,421 INFO L134 LiptonReduction]: Checked pairs total: 7607 [2023-08-31 20:00:45,422 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-31 20:00:45,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:00:45,440 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;@562817bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:00:45,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 20:00:45,445 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-08-31 20:00:45,446 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:00:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:45,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:45,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:45,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1950365207, now seen corresponding path program 1 times [2023-08-31 20:00:45,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:45,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678651142] [2023-08-31 20:00:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:45,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:45,727 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 20:00:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:45,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678651142] [2023-08-31 20:00:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678651142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:00:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:00:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 20:00:45,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484196601] [2023-08-31 20:00:45,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:00:45,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:00:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:00:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:00:45,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 166 [2023-08-31 20:00:45,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 20:00:45,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:45,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 166 [2023-08-31 20:00:45,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:45,884 INFO L130 PetriNetUnfolder]: 31/148 cut-off events. [2023-08-31 20:00:45,884 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:00:45,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 148 events. 31/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 30 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 214. Up to 76 conditions per place. [2023-08-31 20:00:45,886 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 14 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-31 20:00:45,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 109 flow [2023-08-31 20:00:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:00:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:00:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-31 20:00:45,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763052208835341 [2023-08-31 20:00:45,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-31 20:00:45,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-31 20:00:45,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:45,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-31 20:00:45,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 20:00:45,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 20:00:45,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 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 20:00:45,928 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 287 transitions. [2023-08-31 20:00:45,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 109 flow [2023-08-31 20:00:45,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:00:45,932 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-31 20:00:45,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-31 20:00:45,938 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-31 20:00:45,939 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-31 20:00:45,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 20:00:45,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:45,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:45,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:00:45,940 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 20:00:45,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1263490996, now seen corresponding path program 1 times [2023-08-31 20:00:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:45,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095001746] [2023-08-31 20:00:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:45,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:46,034 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 20:00:46,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:46,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095001746] [2023-08-31 20:00:46,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095001746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:00:46,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322395350] [2023-08-31 20:00:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:46,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:00:46,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:00:46,039 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 20:00:46,063 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 20:00:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:46,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:00:46,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:00:46,180 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 20:00:46,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:00:46,197 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 20:00:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322395350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:00:46,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:00:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 20:00:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090594363] [2023-08-31 20:00:46,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:00:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 20:00:46,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 20:00:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 20:00:46,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-08-31 20:00:46,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 20:00:46,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:46,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-08-31 20:00:46,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:46,283 INFO L130 PetriNetUnfolder]: 31/151 cut-off events. [2023-08-31 20:00:46,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:00:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 151 events. 31/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 541 event pairs, 30 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 233. Up to 76 conditions per place. [2023-08-31 20:00:46,299 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 14 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-31 20:00:46,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 136 flow [2023-08-31 20:00:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:00:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:00:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-08-31 20:00:46,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582329317269076 [2023-08-31 20:00:46,302 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-08-31 20:00:46,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-08-31 20:00:46,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:46,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-08-31 20:00:46,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 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 20:00:46,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:46,315 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:46,315 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 556 transitions. [2023-08-31 20:00:46,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 136 flow [2023-08-31 20:00:46,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 132 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 20:00:46,317 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-31 20:00:46,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-31 20:00:46,318 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-31 20:00:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-31 20:00:46,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 20:00:46,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:46,319 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:46,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 20:00:46,525 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 20:00:46,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:46,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1338651991, now seen corresponding path program 2 times [2023-08-31 20:00:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730974859] [2023-08-31 20:00:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 20:00:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730974859] [2023-08-31 20:00:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730974859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:00:47,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:00:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:00:47,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932560614] [2023-08-31 20:00:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:00:47,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:00:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:47,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:00:47,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:00:47,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2023-08-31 20:00:47,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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 20:00:47,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:47,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2023-08-31 20:00:47,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:47,444 INFO L130 PetriNetUnfolder]: 186/468 cut-off events. [2023-08-31 20:00:47,445 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:00:47,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 468 events. 186/468 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2284 event pairs, 86 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 880. Up to 247 conditions per place. [2023-08-31 20:00:47,453 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 62 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2023-08-31 20:00:47,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 93 transitions, 392 flow [2023-08-31 20:00:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:00:47,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:00:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2023-08-31 20:00:47,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2023-08-31 20:00:47,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2023-08-31 20:00:47,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2023-08-31 20:00:47,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:47,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2023-08-31 20:00:47,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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 20:00:47,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:47,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:47,473 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 537 transitions. [2023-08-31 20:00:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 93 transitions, 392 flow [2023-08-31 20:00:47,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 378 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 20:00:47,476 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 250 flow [2023-08-31 20:00:47,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-31 20:00:47,477 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-08-31 20:00:47,477 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 250 flow [2023-08-31 20:00:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 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 20:00:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:00:47,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:47,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2110106231, now seen corresponding path program 1 times [2023-08-31 20:00:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504105030] [2023-08-31 20:00:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 20:00:47,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504105030] [2023-08-31 20:00:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504105030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:00:47,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:00:47,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:00:47,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854366668] [2023-08-31 20:00:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:00:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:00:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:47,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:00:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:00:47,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 166 [2023-08-31 20:00:47,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 20:00:47,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:47,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 166 [2023-08-31 20:00:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:48,101 INFO L130 PetriNetUnfolder]: 246/644 cut-off events. [2023-08-31 20:00:48,102 INFO L131 PetriNetUnfolder]: For 146/163 co-relation queries the response was YES. [2023-08-31 20:00:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 644 events. 246/644 cut-off events. For 146/163 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3705 event pairs, 78 based on Foata normal form. 12/633 useless extension candidates. Maximal degree in co-relation 1481. Up to 346 conditions per place. [2023-08-31 20:00:48,106 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 81 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2023-08-31 20:00:48,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 119 transitions, 606 flow [2023-08-31 20:00:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:00:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:00:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 547 transitions. [2023-08-31 20:00:48,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491967871485943 [2023-08-31 20:00:48,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 547 transitions. [2023-08-31 20:00:48,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 547 transitions. [2023-08-31 20:00:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:48,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 547 transitions. [2023-08-31 20:00:48,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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 20:00:48,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:48,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:48,113 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 250 flow. Second operand 6 states and 547 transitions. [2023-08-31 20:00:48,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 119 transitions, 606 flow [2023-08-31 20:00:48,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 119 transitions, 606 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:00:48,119 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 428 flow [2023-08-31 20:00:48,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-31 20:00:48,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-31 20:00:48,120 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 428 flow [2023-08-31 20:00:48,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 20:00:48,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:48,121 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:00:48,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:48,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1793987561, now seen corresponding path program 1 times [2023-08-31 20:00:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105535825] [2023-08-31 20:00:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:48,200 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 20:00:48,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105535825] [2023-08-31 20:00:48,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105535825] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:00:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477288473] [2023-08-31 20:00:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:48,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:00:48,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:00:48,203 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 20:00:48,228 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 20:00:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:48,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:00:48,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:00:48,325 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 20:00:48,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:00:48,384 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 20:00:48,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477288473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:00:48,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:00:48,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-31 20:00:48,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488409322] [2023-08-31 20:00:48,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:00:48,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:00:48,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:00:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-31 20:00:48,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-08-31 20:00:48,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 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 20:00:48,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:48,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-08-31 20:00:48,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:48,527 INFO L130 PetriNetUnfolder]: 131/471 cut-off events. [2023-08-31 20:00:48,528 INFO L131 PetriNetUnfolder]: For 241/253 co-relation queries the response was YES. [2023-08-31 20:00:48,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 471 events. 131/471 cut-off events. For 241/253 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2943 event pairs, 54 based on Foata normal form. 10/467 useless extension candidates. Maximal degree in co-relation 1154. Up to 218 conditions per place. [2023-08-31 20:00:48,533 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 30 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-31 20:00:48,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 546 flow [2023-08-31 20:00:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:00:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:00:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1099 transitions. [2023-08-31 20:00:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517068273092369 [2023-08-31 20:00:48,537 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1099 transitions. [2023-08-31 20:00:48,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1099 transitions. [2023-08-31 20:00:48,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:48,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1099 transitions. [2023-08-31 20:00:48,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.58333333333333) internal successors, (1099), 12 states have internal predecessors, (1099), 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 20:00:48,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:00:48,545 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:00:48,545 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 428 flow. Second operand 12 states and 1099 transitions. [2023-08-31 20:00:48,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 546 flow [2023-08-31 20:00:48,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:00:48,552 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 512 flow [2023-08-31 20:00:48,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-31 20:00:48,555 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-08-31 20:00:48,555 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 512 flow [2023-08-31 20:00:48,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 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 20:00:48,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:48,556 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:48,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 20:00:48,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:00:48,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:48,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 46610167, now seen corresponding path program 2 times [2023-08-31 20:00:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687109665] [2023-08-31 20:00:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:00:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687109665] [2023-08-31 20:00:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687109665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:00:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:00:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:00:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662308399] [2023-08-31 20:00:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:00:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:00:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:00:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:00:49,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:00:49,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 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 20:00:49,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:49,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:00:49,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:49,531 INFO L130 PetriNetUnfolder]: 449/1038 cut-off events. [2023-08-31 20:00:49,531 INFO L131 PetriNetUnfolder]: For 762/783 co-relation queries the response was YES. [2023-08-31 20:00:49,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1038 events. 449/1038 cut-off events. For 762/783 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5829 event pairs, 155 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 3011. Up to 700 conditions per place. [2023-08-31 20:00:49,549 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 115 selfloop transitions, 52 changer transitions 2/174 dead transitions. [2023-08-31 20:00:49,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 174 transitions, 1219 flow [2023-08-31 20:00:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:00:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:00:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2023-08-31 20:00:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190763052208835 [2023-08-31 20:00:49,552 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 517 transitions. [2023-08-31 20:00:49,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 517 transitions. [2023-08-31 20:00:49,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:49,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 517 transitions. [2023-08-31 20:00:49,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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 20:00:49,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:49,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:49,557 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 512 flow. Second operand 6 states and 517 transitions. [2023-08-31 20:00:49,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 174 transitions, 1219 flow [2023-08-31 20:00:49,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 174 transitions, 1171 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-31 20:00:49,565 INFO L231 Difference]: Finished difference. Result has 86 places, 135 transitions, 921 flow [2023-08-31 20:00:49,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=86, PETRI_TRANSITIONS=135} [2023-08-31 20:00:49,567 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2023-08-31 20:00:49,568 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 135 transitions, 921 flow [2023-08-31 20:00:49,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 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 20:00:49,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:49,568 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:49,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:00:49,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:49,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -835319141, now seen corresponding path program 1 times [2023-08-31 20:00:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330344946] [2023-08-31 20:00:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:00:49,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330344946] [2023-08-31 20:00:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330344946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:00:49,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:00:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:00:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984755577] [2023-08-31 20:00:49,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:00:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:00:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:00:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:00:50,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-31 20:00:50,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 135 transitions, 921 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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 20:00:50,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:00:50,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-31 20:00:50,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:00:50,313 INFO L130 PetriNetUnfolder]: 568/1316 cut-off events. [2023-08-31 20:00:50,314 INFO L131 PetriNetUnfolder]: For 2062/2091 co-relation queries the response was YES. [2023-08-31 20:00:50,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 1316 events. 568/1316 cut-off events. For 2062/2091 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7947 event pairs, 136 based on Foata normal form. 4/1268 useless extension candidates. Maximal degree in co-relation 4574. Up to 818 conditions per place. [2023-08-31 20:00:50,323 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 140 selfloop transitions, 72 changer transitions 38/255 dead transitions. [2023-08-31 20:00:50,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 255 transitions, 2061 flow [2023-08-31 20:00:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:00:50,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:00:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-31 20:00:50,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291164658634538 [2023-08-31 20:00:50,326 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-31 20:00:50,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-31 20:00:50,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:00:50,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-31 20:00:50,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 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 20:00:50,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:50,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 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 20:00:50,329 INFO L175 Difference]: Start difference. First operand has 86 places, 135 transitions, 921 flow. Second operand 6 states and 527 transitions. [2023-08-31 20:00:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 255 transitions, 2061 flow [2023-08-31 20:00:50,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 255 transitions, 2009 flow, removed 26 selfloop flow, removed 0 redundant places. [2023-08-31 20:00:50,344 INFO L231 Difference]: Finished difference. Result has 95 places, 181 transitions, 1437 flow [2023-08-31 20:00:50,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1437, PETRI_PLACES=95, PETRI_TRANSITIONS=181} [2023-08-31 20:00:50,345 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-08-31 20:00:50,345 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 181 transitions, 1437 flow [2023-08-31 20:00:50,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 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 20:00:50,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:00:50,346 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:00:50,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:00:50,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:00:50,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:00:50,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1071622368, now seen corresponding path program 1 times [2023-08-31 20:00:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:00:50,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912589559] [2023-08-31 20:00:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:00:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:00:54,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:00:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912589559] [2023-08-31 20:00:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912589559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:00:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919741903] [2023-08-31 20:00:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:00:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:00:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:00:54,136 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 20:00:54,163 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 20:00:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:00:54,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-31 20:00:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:00:54,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:00:54,373 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:00:54,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:00:54,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:00:54,411 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:00:54,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-31 20:00:54,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:00:54,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:00:54,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:00:54,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:00:54,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:00:54,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:00:54,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:00:54,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:00:54,560 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:00:54,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:00:54,692 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:00:54,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-31 20:01:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 20:01:02,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:01:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:01:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919741903] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:01:03,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:01:03,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 16] total 29 [2023-08-31 20:01:03,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620539160] [2023-08-31 20:01:03,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:01:03,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:01:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:01:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:01:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=765, Unknown=3, NotChecked=0, Total=870 [2023-08-31 20:01:05,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:01:05,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 181 transitions, 1437 flow. Second operand has 13 states, 13 states have (on average 66.3076923076923) internal successors, (862), 13 states have internal predecessors, (862), 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 20:01:05,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:01:05,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:01:05,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:01:11,668 INFO L130 PetriNetUnfolder]: 1089/2612 cut-off events. [2023-08-31 20:01:11,668 INFO L131 PetriNetUnfolder]: For 6542/6598 co-relation queries the response was YES. [2023-08-31 20:01:11,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10957 conditions, 2612 events. 1089/2612 cut-off events. For 6542/6598 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19481 event pairs, 128 based on Foata normal form. 23/2635 useless extension candidates. Maximal degree in co-relation 10887. Up to 837 conditions per place. [2023-08-31 20:01:11,688 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 351 selfloop transitions, 113 changer transitions 104/577 dead transitions. [2023-08-31 20:01:11,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 577 transitions, 5493 flow [2023-08-31 20:01:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 20:01:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 20:01:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2023-08-31 20:01:11,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46243798724309 [2023-08-31 20:01:11,693 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2023-08-31 20:01:11,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2023-08-31 20:01:11,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:01:11,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2023-08-31 20:01:11,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 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 20:01:11,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 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 20:01:11,701 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 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 20:01:11,701 INFO L175 Difference]: Start difference. First operand has 95 places, 181 transitions, 1437 flow. Second operand 17 states and 1305 transitions. [2023-08-31 20:01:11,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 577 transitions, 5493 flow [2023-08-31 20:01:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 577 transitions, 5437 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-31 20:01:11,738 INFO L231 Difference]: Finished difference. Result has 124 places, 276 transitions, 2726 flow [2023-08-31 20:01:11,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2726, PETRI_PLACES=124, PETRI_TRANSITIONS=276} [2023-08-31 20:01:11,739 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2023-08-31 20:01:11,739 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 276 transitions, 2726 flow [2023-08-31 20:01:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.3076923076923) internal successors, (862), 13 states have internal predecessors, (862), 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 20:01:11,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:01:11,740 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:01:11,751 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 20:01:11,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:01:11,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:01:11,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:01:11,952 INFO L85 PathProgramCache]: Analyzing trace with hash -192774232, now seen corresponding path program 2 times [2023-08-31 20:01:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:01:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426905605] [2023-08-31 20:01:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:01:11,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:01:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:01:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:01:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:01:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426905605] [2023-08-31 20:01:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426905605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:01:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183559924] [2023-08-31 20:01:41,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:01:41,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:01:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:01:41,756 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 20:01:41,767 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 20:01:41,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:01:41,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:01:41,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-31 20:01:41,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:01:41,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:01:41,932 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:01:41,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:01:41,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:01:41,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:01:41,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:01:41,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:01:41,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:01:41,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:01:42,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:01:42,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:01:42,052 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:01:42,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-31 20:01:42,194 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:01:42,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 98 treesize of output 104 [2023-08-31 20:01:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:01:50,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:01:50,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183559924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:01:50,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:01:50,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2023-08-31 20:01:50,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062492491] [2023-08-31 20:01:50,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:01:50,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:01:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:01:50,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:01:50,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=547, Unknown=3, NotChecked=0, Total=650 [2023-08-31 20:01:52,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:01:54,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:01:56,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:01:58,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:00,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:02,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:04,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:06,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:06,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 166 [2023-08-31 20:02:06,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 276 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 60.54545454545455) internal successors, (666), 11 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:06,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:06,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 166 [2023-08-31 20:02:06,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:09,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:11,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:13,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:17,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:19,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:02:24,035 INFO L130 PetriNetUnfolder]: 1416/3214 cut-off events. [2023-08-31 20:02:24,035 INFO L131 PetriNetUnfolder]: For 13700/13730 co-relation queries the response was YES. [2023-08-31 20:02:24,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16126 conditions, 3214 events. 1416/3214 cut-off events. For 13700/13730 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23982 event pairs, 277 based on Foata normal form. 12/3222 useless extension candidates. Maximal degree in co-relation 16042. Up to 1220 conditions per place. [2023-08-31 20:02:24,069 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 427 selfloop transitions, 93 changer transitions 45/580 dead transitions. [2023-08-31 20:02:24,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 580 transitions, 6617 flow [2023-08-31 20:02:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:02:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:02:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 871 transitions. [2023-08-31 20:02:24,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43724899598393574 [2023-08-31 20:02:24,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 871 transitions. [2023-08-31 20:02:24,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 871 transitions. [2023-08-31 20:02:24,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:24,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 871 transitions. [2023-08-31 20:02:24,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.58333333333333) internal successors, (871), 12 states have internal predecessors, (871), 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 20:02:24,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:02:24,079 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:02:24,079 INFO L175 Difference]: Start difference. First operand has 124 places, 276 transitions, 2726 flow. Second operand 12 states and 871 transitions. [2023-08-31 20:02:24,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 580 transitions, 6617 flow [2023-08-31 20:02:24,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 580 transitions, 6559 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-31 20:02:24,160 INFO L231 Difference]: Finished difference. Result has 142 places, 333 transitions, 3783 flow [2023-08-31 20:02:24,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3783, PETRI_PLACES=142, PETRI_TRANSITIONS=333} [2023-08-31 20:02:24,161 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2023-08-31 20:02:24,161 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 333 transitions, 3783 flow [2023-08-31 20:02:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.54545454545455) internal successors, (666), 11 states have internal predecessors, (666), 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 20:02:24,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:24,162 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:24,170 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 20:02:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:02:24,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:02:24,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash -535616722, now seen corresponding path program 1 times [2023-08-31 20:02:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:24,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207153750] [2023-08-31 20:02:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207153750] [2023-08-31 20:02:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207153750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:02:24,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:02:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:02:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162090424] [2023-08-31 20:02:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:02:24,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:02:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:02:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:02:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:02:25,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:02:25,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 333 transitions, 3783 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:02:25,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:25,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:02:25,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:25,775 INFO L130 PetriNetUnfolder]: 1079/2681 cut-off events. [2023-08-31 20:02:25,775 INFO L131 PetriNetUnfolder]: For 15062/15135 co-relation queries the response was YES. [2023-08-31 20:02:25,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14622 conditions, 2681 events. 1079/2681 cut-off events. For 15062/15135 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20897 event pairs, 211 based on Foata normal form. 59/2727 useless extension candidates. Maximal degree in co-relation 14529. Up to 837 conditions per place. [2023-08-31 20:02:25,814 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 350 selfloop transitions, 81 changer transitions 66/550 dead transitions. [2023-08-31 20:02:25,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 550 transitions, 6652 flow [2023-08-31 20:02:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:02:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:02:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 812 transitions. [2023-08-31 20:02:25,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891566265060241 [2023-08-31 20:02:25,817 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 812 transitions. [2023-08-31 20:02:25,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 812 transitions. [2023-08-31 20:02:25,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:25,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 812 transitions. [2023-08-31 20:02:25,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.2) internal successors, (812), 10 states have internal predecessors, (812), 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 20:02:25,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:02:25,822 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:02:25,822 INFO L175 Difference]: Start difference. First operand has 142 places, 333 transitions, 3783 flow. Second operand 10 states and 812 transitions. [2023-08-31 20:02:25,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 550 transitions, 6652 flow [2023-08-31 20:02:25,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 550 transitions, 6578 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-31 20:02:25,905 INFO L231 Difference]: Finished difference. Result has 158 places, 387 transitions, 4662 flow [2023-08-31 20:02:25,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4662, PETRI_PLACES=158, PETRI_TRANSITIONS=387} [2023-08-31 20:02:25,906 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 119 predicate places. [2023-08-31 20:02:25,907 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 387 transitions, 4662 flow [2023-08-31 20:02:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:02:25,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:25,907 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:25,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:02:25,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:02:25,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1859706642, now seen corresponding path program 3 times [2023-08-31 20:02:25,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:25,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263015879] [2023-08-31 20:02:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263015879] [2023-08-31 20:02:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263015879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:02:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:02:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:02:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450910307] [2023-08-31 20:02:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:02:26,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:02:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:02:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:02:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:02:26,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:02:26,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 387 transitions, 4662 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:02:26,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:26,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:02:26,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:27,542 INFO L130 PetriNetUnfolder]: 1073/2655 cut-off events. [2023-08-31 20:02:27,542 INFO L131 PetriNetUnfolder]: For 18780/18853 co-relation queries the response was YES. [2023-08-31 20:02:27,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15416 conditions, 2655 events. 1073/2655 cut-off events. For 18780/18853 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20360 event pairs, 113 based on Foata normal form. 57/2704 useless extension candidates. Maximal degree in co-relation 15316. Up to 923 conditions per place. [2023-08-31 20:02:27,574 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 347 selfloop transitions, 104 changer transitions 85/582 dead transitions. [2023-08-31 20:02:27,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 582 transitions, 7559 flow [2023-08-31 20:02:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 20:02:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 20:02:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1178 transitions. [2023-08-31 20:02:27,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47309236947791167 [2023-08-31 20:02:27,579 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1178 transitions. [2023-08-31 20:02:27,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1178 transitions. [2023-08-31 20:02:27,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:27,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1178 transitions. [2023-08-31 20:02:27,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.53333333333333) internal successors, (1178), 15 states have internal predecessors, (1178), 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 20:02:27,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 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 20:02:27,586 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 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 20:02:27,586 INFO L175 Difference]: Start difference. First operand has 158 places, 387 transitions, 4662 flow. Second operand 15 states and 1178 transitions. [2023-08-31 20:02:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 582 transitions, 7559 flow [2023-08-31 20:02:27,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 582 transitions, 7475 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 20:02:27,666 INFO L231 Difference]: Finished difference. Result has 175 places, 386 transitions, 4867 flow [2023-08-31 20:02:27,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4867, PETRI_PLACES=175, PETRI_TRANSITIONS=386} [2023-08-31 20:02:27,667 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2023-08-31 20:02:27,667 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 386 transitions, 4867 flow [2023-08-31 20:02:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:02:27,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:27,668 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:27,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:02:27,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:02:27,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:27,669 INFO L85 PathProgramCache]: Analyzing trace with hash -536452000, now seen corresponding path program 4 times [2023-08-31 20:02:27,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:27,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705967569] [2023-08-31 20:02:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:02:31,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705967569] [2023-08-31 20:02:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705967569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:02:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69599652] [2023-08-31 20:02:31,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 20:02:31,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:02:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:02:31,706 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 20:02:31,709 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 20:02:31,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 20:02:31,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:02:31,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-31 20:02:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:02:31,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:02:31,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:02:32,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:02:32,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:02:32,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:02:32,200 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:02:32,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:02:32,237 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:02:32,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-31 20:02:32,266 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:02:32,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-31 20:02:32,346 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-31 20:02:32,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-31 20:02:32,382 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-31 20:02:32,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-31 20:02:32,560 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:02:32,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-31 20:02:46,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-31 20:02:46,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:02:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69599652] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:02:47,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:02:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 16] total 41 [2023-08-31 20:02:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987205337] [2023-08-31 20:02:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:02:47,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:02:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:02:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:02:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1532, Unknown=6, NotChecked=0, Total=1722 [2023-08-31 20:02:48,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-31 20:02:48,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 386 transitions, 4867 flow. Second operand has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 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 20:02:48,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:48,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-31 20:02:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:53,532 INFO L130 PetriNetUnfolder]: 1164/2813 cut-off events. [2023-08-31 20:02:53,532 INFO L131 PetriNetUnfolder]: For 23433/23551 co-relation queries the response was YES. [2023-08-31 20:02:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17056 conditions, 2813 events. 1164/2813 cut-off events. For 23433/23551 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21438 event pairs, 112 based on Foata normal form. 62/2871 useless extension candidates. Maximal degree in co-relation 16951. Up to 1354 conditions per place. [2023-08-31 20:02:53,554 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 310 selfloop transitions, 188 changer transitions 56/576 dead transitions. [2023-08-31 20:02:53,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 576 transitions, 8266 flow [2023-08-31 20:02:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:02:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:02:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 803 transitions. [2023-08-31 20:02:53,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48373493975903614 [2023-08-31 20:02:53,559 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 803 transitions. [2023-08-31 20:02:53,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 803 transitions. [2023-08-31 20:02:53,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:53,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 803 transitions. [2023-08-31 20:02:53,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.3) internal successors, (803), 10 states have internal predecessors, (803), 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 20:02:53,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:02:53,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:02:53,566 INFO L175 Difference]: Start difference. First operand has 175 places, 386 transitions, 4867 flow. Second operand 10 states and 803 transitions. [2023-08-31 20:02:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 576 transitions, 8266 flow [2023-08-31 20:02:53,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 576 transitions, 7971 flow, removed 35 selfloop flow, removed 12 redundant places. [2023-08-31 20:02:53,692 INFO L231 Difference]: Finished difference. Result has 168 places, 424 transitions, 5907 flow [2023-08-31 20:02:53,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5907, PETRI_PLACES=168, PETRI_TRANSITIONS=424} [2023-08-31 20:02:53,693 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2023-08-31 20:02:53,694 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 424 transitions, 5907 flow [2023-08-31 20:02:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 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 20:02:53,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:53,694 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:53,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-31 20:02:53,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-31 20:02:53,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:02:53,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1117673112, now seen corresponding path program 2 times [2023-08-31 20:02:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117645260] [2023-08-31 20:02:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117645260] [2023-08-31 20:02:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117645260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:02:54,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:02:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 20:02:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253081964] [2023-08-31 20:02:54,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:02:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 20:02:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:02:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 20:02:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-31 20:02:54,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:02:54,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 424 transitions, 5907 flow. Second operand has 10 states, 10 states have (on average 71.5) internal successors, (715), 10 states have internal predecessors, (715), 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 20:02:54,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:54,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:02:54,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:55,656 INFO L130 PetriNetUnfolder]: 1151/2858 cut-off events. [2023-08-31 20:02:55,656 INFO L131 PetriNetUnfolder]: For 24942/25004 co-relation queries the response was YES. [2023-08-31 20:02:55,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17794 conditions, 2858 events. 1151/2858 cut-off events. For 24942/25004 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22258 event pairs, 181 based on Foata normal form. 50/2896 useless extension candidates. Maximal degree in co-relation 17691. Up to 1067 conditions per place. [2023-08-31 20:02:55,684 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 404 selfloop transitions, 108 changer transitions 89/657 dead transitions. [2023-08-31 20:02:55,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 657 transitions, 9467 flow [2023-08-31 20:02:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 20:02:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 20:02:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1255 transitions. [2023-08-31 20:02:55,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47251506024096385 [2023-08-31 20:02:55,688 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1255 transitions. [2023-08-31 20:02:55,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1255 transitions. [2023-08-31 20:02:55,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:55,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1255 transitions. [2023-08-31 20:02:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.4375) internal successors, (1255), 16 states have internal predecessors, (1255), 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 20:02:55,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 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 20:02:55,695 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 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 20:02:55,695 INFO L175 Difference]: Start difference. First operand has 168 places, 424 transitions, 5907 flow. Second operand 16 states and 1255 transitions. [2023-08-31 20:02:55,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 657 transitions, 9467 flow [2023-08-31 20:02:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 657 transitions, 9322 flow, removed 50 selfloop flow, removed 2 redundant places. [2023-08-31 20:02:55,859 INFO L231 Difference]: Finished difference. Result has 191 places, 458 transitions, 6698 flow [2023-08-31 20:02:55,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6698, PETRI_PLACES=191, PETRI_TRANSITIONS=458} [2023-08-31 20:02:55,860 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 152 predicate places. [2023-08-31 20:02:55,860 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 458 transitions, 6698 flow [2023-08-31 20:02:55,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.5) internal successors, (715), 10 states have internal predecessors, (715), 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 20:02:55,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:55,861 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:55,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 20:02:55,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:02:55,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1946132512, now seen corresponding path program 5 times [2023-08-31 20:02:55,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:55,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500564658] [2023-08-31 20:02:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:02:59,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:59,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500564658] [2023-08-31 20:02:59,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500564658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:02:59,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607655927] [2023-08-31 20:02:59,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 20:02:59,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:02:59,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:02:59,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:02:59,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 20:02:59,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-31 20:02:59,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:02:59,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-31 20:02:59,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:02:59,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:02:59,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 20:02:59,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-31 20:02:59,769 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:02:59,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2023-08-31 20:02:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:59,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-08-31 20:02:59,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:59,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-08-31 20:02:59,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-08-31 20:02:59,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2023-08-31 20:02:59,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:59,957 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2023-08-31 20:02:59,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:59,992 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:02:59,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2023-08-31 20:03:00,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:00,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:00,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:00,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:00,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:03:00,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 89 treesize of output 106 [2023-08-31 20:03:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 20:03:06,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:03:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607655927] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:03:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18, 19] total 35 [2023-08-31 20:03:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340458092] [2023-08-31 20:03:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:03:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:03:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1074, Unknown=2, NotChecked=0, Total=1260 [2023-08-31 20:03:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-31 20:03:07,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 458 transitions, 6698 flow. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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 20:03:07,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:07,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-31 20:03:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:08,827 INFO L130 PetriNetUnfolder]: 1314/3177 cut-off events. [2023-08-31 20:03:08,827 INFO L131 PetriNetUnfolder]: For 33985/34154 co-relation queries the response was YES. [2023-08-31 20:03:08,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20798 conditions, 3177 events. 1314/3177 cut-off events. For 33985/34154 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24803 event pairs, 136 based on Foata normal form. 92/3260 useless extension candidates. Maximal degree in co-relation 20685. Up to 1425 conditions per place. [2023-08-31 20:03:08,863 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 377 selfloop transitions, 226 changer transitions 39/669 dead transitions. [2023-08-31 20:03:08,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 669 transitions, 10793 flow [2023-08-31 20:03:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:03:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:03:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 808 transitions. [2023-08-31 20:03:08,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867469879518072 [2023-08-31 20:03:08,867 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 808 transitions. [2023-08-31 20:03:08,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 808 transitions. [2023-08-31 20:03:08,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:08,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 808 transitions. [2023-08-31 20:03:08,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.8) internal successors, (808), 10 states have internal predecessors, (808), 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 20:03:08,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:03:08,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:03:08,871 INFO L175 Difference]: Start difference. First operand has 191 places, 458 transitions, 6698 flow. Second operand 10 states and 808 transitions. [2023-08-31 20:03:08,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 669 transitions, 10793 flow [2023-08-31 20:03:09,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 669 transitions, 10613 flow, removed 75 selfloop flow, removed 7 redundant places. [2023-08-31 20:03:09,053 INFO L231 Difference]: Finished difference. Result has 195 places, 512 transitions, 8471 flow [2023-08-31 20:03:09,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=6581, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8471, PETRI_PLACES=195, PETRI_TRANSITIONS=512} [2023-08-31 20:03:09,055 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2023-08-31 20:03:09,055 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 512 transitions, 8471 flow [2023-08-31 20:03:09,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 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 20:03:09,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:09,055 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:09,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 20:03:09,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:09,256 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:09,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2049415502, now seen corresponding path program 3 times [2023-08-31 20:03:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544354740] [2023-08-31 20:03:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544354740] [2023-08-31 20:03:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544354740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:09,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:09,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:03:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432945550] [2023-08-31 20:03:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:03:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:09,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:03:09,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:03:10,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:03:10,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 512 transitions, 8471 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:03:10,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:10,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:03:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:11,175 INFO L130 PetriNetUnfolder]: 1288/3190 cut-off events. [2023-08-31 20:03:11,176 INFO L131 PetriNetUnfolder]: For 41799/41897 co-relation queries the response was YES. [2023-08-31 20:03:11,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22153 conditions, 3190 events. 1288/3190 cut-off events. For 41799/41897 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25440 event pairs, 204 based on Foata normal form. 58/3233 useless extension candidates. Maximal degree in co-relation 22037. Up to 1790 conditions per place. [2023-08-31 20:03:11,208 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 361 selfloop transitions, 195 changer transitions 57/676 dead transitions. [2023-08-31 20:03:11,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 676 transitions, 11767 flow [2023-08-31 20:03:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:03:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:03:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 960 transitions. [2023-08-31 20:03:11,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-08-31 20:03:11,211 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 960 transitions. [2023-08-31 20:03:11,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 960 transitions. [2023-08-31 20:03:11,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:11,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 960 transitions. [2023-08-31 20:03:11,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:11,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:03:11,216 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:03:11,216 INFO L175 Difference]: Start difference. First operand has 195 places, 512 transitions, 8471 flow. Second operand 12 states and 960 transitions. [2023-08-31 20:03:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 676 transitions, 11767 flow [2023-08-31 20:03:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 676 transitions, 11679 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-31 20:03:11,424 INFO L231 Difference]: Finished difference. Result has 212 places, 545 transitions, 9692 flow [2023-08-31 20:03:11,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9692, PETRI_PLACES=212, PETRI_TRANSITIONS=545} [2023-08-31 20:03:11,425 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2023-08-31 20:03:11,425 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 545 transitions, 9692 flow [2023-08-31 20:03:11,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:03:11,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:11,426 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:11,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 20:03:11,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:11,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1021638330, now seen corresponding path program 6 times [2023-08-31 20:03:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:11,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842707536] [2023-08-31 20:03:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:03:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842707536] [2023-08-31 20:03:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842707536] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:42,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089585486] [2023-08-31 20:03:42,254 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 20:03:42,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:42,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:03:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 20:03:42,365 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 20:03:42,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:03:42,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 20:03:42,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:03:42,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:03:42,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:03:42,419 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:03:42,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:03:42,450 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:03:42,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-31 20:03:42,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:03:42,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:03:42,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:03:42,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:03:42,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:03:42,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:03:42,570 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:03:42,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-31 20:03:42,592 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:03:42,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-31 20:03:42,709 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:03:42,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-31 20:03:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:54,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:03:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089585486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:03:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 29 [2023-08-31 20:03:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663977023] [2023-08-31 20:03:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:03:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:03:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=748, Unknown=5, NotChecked=0, Total=870 [2023-08-31 20:03:56,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:03:58,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:00,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:03,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:05,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:07,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:09,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:11,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:11,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 166 [2023-08-31 20:04:11,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 545 transitions, 9692 flow. Second operand has 11 states, 11 states have (on average 54.81818181818182) internal successors, (603), 11 states have internal predecessors, (603), 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 20:04:11,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:04:11,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 166 [2023-08-31 20:04:11,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:04:15,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:17,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:19,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:21,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:26,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:28,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:30,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:31,356 INFO L130 PetriNetUnfolder]: 1923/4235 cut-off events. [2023-08-31 20:04:31,356 INFO L131 PetriNetUnfolder]: For 63729/63729 co-relation queries the response was YES. [2023-08-31 20:04:31,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30435 conditions, 4235 events. 1923/4235 cut-off events. For 63729/63729 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 32075 event pairs, 405 based on Foata normal form. 18/4253 useless extension candidates. Maximal degree in co-relation 30312. Up to 2178 conditions per place. [2023-08-31 20:04:31,399 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 485 selfloop transitions, 250 changer transitions 42/777 dead transitions. [2023-08-31 20:04:31,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 777 transitions, 14792 flow [2023-08-31 20:04:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:04:31,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:04:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 697 transitions. [2023-08-31 20:04:31,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198795180722892 [2023-08-31 20:04:31,401 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 697 transitions. [2023-08-31 20:04:31,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 697 transitions. [2023-08-31 20:04:31,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:04:31,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 697 transitions. [2023-08-31 20:04:31,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 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 20:04:31,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:04:31,405 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:04:31,405 INFO L175 Difference]: Start difference. First operand has 212 places, 545 transitions, 9692 flow. Second operand 10 states and 697 transitions. [2023-08-31 20:04:31,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 777 transitions, 14792 flow [2023-08-31 20:04:31,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 777 transitions, 14727 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-31 20:04:31,761 INFO L231 Difference]: Finished difference. Result has 221 places, 605 transitions, 11875 flow [2023-08-31 20:04:31,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=9646, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11875, PETRI_PLACES=221, PETRI_TRANSITIONS=605} [2023-08-31 20:04:31,762 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2023-08-31 20:04:31,762 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 605 transitions, 11875 flow [2023-08-31 20:04:31,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 54.81818181818182) internal successors, (603), 11 states have internal predecessors, (603), 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 20:04:31,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:04:31,763 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:04:31,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 20:04:31,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:04:31,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:04:31,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:04:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -590069129, now seen corresponding path program 1 times [2023-08-31 20:04:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:04:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867380811] [2023-08-31 20:04:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:04:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:04:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:04:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:04:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:04:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867380811] [2023-08-31 20:04:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867380811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:04:32,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:04:32,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:04:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613207788] [2023-08-31 20:04:32,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:04:32,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:04:32,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:04:32,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:04:32,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:04:32,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:04:32,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 605 transitions, 11875 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:04:32,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:04:32,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:04:32,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:04:33,662 INFO L130 PetriNetUnfolder]: 1689/4022 cut-off events. [2023-08-31 20:04:33,663 INFO L131 PetriNetUnfolder]: For 69653/69709 co-relation queries the response was YES. [2023-08-31 20:04:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30456 conditions, 4022 events. 1689/4022 cut-off events. For 69653/69709 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32191 event pairs, 409 based on Foata normal form. 41/4063 useless extension candidates. Maximal degree in co-relation 30329. Up to 1738 conditions per place. [2023-08-31 20:04:33,701 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 510 selfloop transitions, 230 changer transitions 110/855 dead transitions. [2023-08-31 20:04:33,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 855 transitions, 16837 flow [2023-08-31 20:04:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:04:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:04:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 785 transitions. [2023-08-31 20:04:33,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289156626506024 [2023-08-31 20:04:33,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 785 transitions. [2023-08-31 20:04:33,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 785 transitions. [2023-08-31 20:04:33,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:04:33,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 785 transitions. [2023-08-31 20:04:33,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.5) internal successors, (785), 10 states have internal predecessors, (785), 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 20:04:33,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:04:33,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:04:33,707 INFO L175 Difference]: Start difference. First operand has 221 places, 605 transitions, 11875 flow. Second operand 10 states and 785 transitions. [2023-08-31 20:04:33,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 855 transitions, 16837 flow [2023-08-31 20:04:34,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 855 transitions, 16670 flow, removed 69 selfloop flow, removed 1 redundant places. [2023-08-31 20:04:34,022 INFO L231 Difference]: Finished difference. Result has 235 places, 638 transitions, 12902 flow [2023-08-31 20:04:34,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=11719, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12902, PETRI_PLACES=235, PETRI_TRANSITIONS=638} [2023-08-31 20:04:34,023 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 196 predicate places. [2023-08-31 20:04:34,023 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 638 transitions, 12902 flow [2023-08-31 20:04:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:04:34,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:04:34,024 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:04:34,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 20:04:34,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:04:34,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:04:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash -322415680, now seen corresponding path program 7 times [2023-08-31 20:04:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:04:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506266795] [2023-08-31 20:04:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:04:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:04:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:04:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:04:58,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:04:58,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506266795] [2023-08-31 20:04:58,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506266795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:04:58,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499714805] [2023-08-31 20:04:58,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 20:04:58,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:04:58,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:04:58,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:04:58,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 20:04:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:04:58,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-31 20:04:58,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:04:58,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:04:58,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:04:58,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:04:58,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:04:58,803 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:04:58,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-31 20:04:58,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:04:58,843 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:04:58,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:04:58,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:04:58,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:04:58,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:04:58,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:04:58,947 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-31 20:04:58,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-31 20:04:59,023 INFO L321 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2023-08-31 20:04:59,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 88 treesize of output 102 [2023-08-31 20:04:59,111 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:04:59,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-31 20:05:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-31 20:05:05,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:05:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499714805] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:05:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 14] total 39 [2023-08-31 20:05:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097081024] [2023-08-31 20:05:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:07,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:05:07,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:05:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1368, Unknown=3, NotChecked=0, Total=1560 [2023-08-31 20:05:08,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-31 20:05:08,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 638 transitions, 12902 flow. Second operand has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 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 20:05:08,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:08,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-31 20:05:08,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:11,716 INFO L130 PetriNetUnfolder]: 1481/3658 cut-off events. [2023-08-31 20:05:11,716 INFO L131 PetriNetUnfolder]: For 72828/72988 co-relation queries the response was YES. [2023-08-31 20:05:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28652 conditions, 3658 events. 1481/3658 cut-off events. For 72828/72988 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 29674 event pairs, 240 based on Foata normal form. 105/3754 useless extension candidates. Maximal degree in co-relation 28519. Up to 1094 conditions per place. [2023-08-31 20:05:11,748 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 480 selfloop transitions, 236 changer transitions 53/803 dead transitions. [2023-08-31 20:05:11,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 803 transitions, 16350 flow [2023-08-31 20:05:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:05:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:05:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 789 transitions. [2023-08-31 20:05:11,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753012048192771 [2023-08-31 20:05:11,749 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 789 transitions. [2023-08-31 20:05:11,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 789 transitions. [2023-08-31 20:05:11,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:11,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 789 transitions. [2023-08-31 20:05:11,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.9) internal successors, (789), 10 states have internal predecessors, (789), 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 20:05:11,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:05:11,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:05:11,753 INFO L175 Difference]: Start difference. First operand has 235 places, 638 transitions, 12902 flow. Second operand 10 states and 789 transitions. [2023-08-31 20:05:11,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 803 transitions, 16350 flow [2023-08-31 20:05:12,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 803 transitions, 16274 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-31 20:05:12,106 INFO L231 Difference]: Finished difference. Result has 244 places, 636 transitions, 13470 flow [2023-08-31 20:05:12,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=12837, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13470, PETRI_PLACES=244, PETRI_TRANSITIONS=636} [2023-08-31 20:05:12,107 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2023-08-31 20:05:12,107 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 636 transitions, 13470 flow [2023-08-31 20:05:12,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 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 20:05:12,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:12,108 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:12,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 20:05:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 20:05:12,309 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:12,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash -550983710, now seen corresponding path program 4 times [2023-08-31 20:05:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:12,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19666724] [2023-08-31 20:05:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19666724] [2023-08-31 20:05:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19666724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:12,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124898717] [2023-08-31 20:05:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:12,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:05:12,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 636 transitions, 13470 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:05:12,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:12,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:05:12,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:14,068 INFO L130 PetriNetUnfolder]: 1480/3692 cut-off events. [2023-08-31 20:05:14,069 INFO L131 PetriNetUnfolder]: For 77585/77702 co-relation queries the response was YES. [2023-08-31 20:05:14,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29726 conditions, 3692 events. 1480/3692 cut-off events. For 77585/77702 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 30499 event pairs, 227 based on Foata normal form. 67/3738 useless extension candidates. Maximal degree in co-relation 29591. Up to 2058 conditions per place. [2023-08-31 20:05:14,108 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 443 selfloop transitions, 245 changer transitions 52/809 dead transitions. [2023-08-31 20:05:14,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 809 transitions, 17609 flow [2023-08-31 20:05:14,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:05:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:05:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 954 transitions. [2023-08-31 20:05:14,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789156626506024 [2023-08-31 20:05:14,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 954 transitions. [2023-08-31 20:05:14,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 954 transitions. [2023-08-31 20:05:14,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:14,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 954 transitions. [2023-08-31 20:05:14,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 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 20:05:14,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:05:14,113 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:05:14,113 INFO L175 Difference]: Start difference. First operand has 244 places, 636 transitions, 13470 flow. Second operand 12 states and 954 transitions. [2023-08-31 20:05:14,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 809 transitions, 17609 flow [2023-08-31 20:05:14,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 809 transitions, 17281 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-31 20:05:14,494 INFO L231 Difference]: Finished difference. Result has 258 places, 681 transitions, 15117 flow [2023-08-31 20:05:14,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=13191, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15117, PETRI_PLACES=258, PETRI_TRANSITIONS=681} [2023-08-31 20:05:14,495 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2023-08-31 20:05:14,495 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 681 transitions, 15117 flow [2023-08-31 20:05:14,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:05:14,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:14,496 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 20:05:14,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:14,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1113847935, now seen corresponding path program 2 times [2023-08-31 20:05:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73174163] [2023-08-31 20:05:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73174163] [2023-08-31 20:05:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73174163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137005939] [2023-08-31 20:05:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:14,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:14,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:15,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:15,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 681 transitions, 15117 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:15,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:15,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:15,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:16,236 INFO L130 PetriNetUnfolder]: 1628/3899 cut-off events. [2023-08-31 20:05:16,236 INFO L131 PetriNetUnfolder]: For 93140/93205 co-relation queries the response was YES. [2023-08-31 20:05:16,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32813 conditions, 3899 events. 1628/3899 cut-off events. For 93140/93205 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31002 event pairs, 382 based on Foata normal form. 67/3966 useless extension candidates. Maximal degree in co-relation 32670. Up to 1454 conditions per place. [2023-08-31 20:05:16,272 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 582 selfloop transitions, 203 changer transitions 83/873 dead transitions. [2023-08-31 20:05:16,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 873 transitions, 19449 flow [2023-08-31 20:05:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2023-08-31 20:05:16,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48058902275769744 [2023-08-31 20:05:16,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 718 transitions. [2023-08-31 20:05:16,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 718 transitions. [2023-08-31 20:05:16,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:16,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 718 transitions. [2023-08-31 20:05:16,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 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 20:05:16,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:16,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:16,277 INFO L175 Difference]: Start difference. First operand has 258 places, 681 transitions, 15117 flow. Second operand 9 states and 718 transitions. [2023-08-31 20:05:16,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 873 transitions, 19449 flow [2023-08-31 20:05:16,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 873 transitions, 19366 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-31 20:05:16,701 INFO L231 Difference]: Finished difference. Result has 265 places, 696 transitions, 15806 flow [2023-08-31 20:05:16,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=15041, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15806, PETRI_PLACES=265, PETRI_TRANSITIONS=696} [2023-08-31 20:05:16,702 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 226 predicate places. [2023-08-31 20:05:16,702 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 696 transitions, 15806 flow [2023-08-31 20:05:16,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:16,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:16,702 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:16,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 20:05:16,702 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:16,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash -42534648, now seen corresponding path program 1 times [2023-08-31 20:05:16,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:16,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068277184] [2023-08-31 20:05:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:16,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068277184] [2023-08-31 20:05:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068277184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:16,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382327630] [2023-08-31 20:05:16,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:16,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:17,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:17,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 696 transitions, 15806 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:17,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:17,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:17,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:18,594 INFO L130 PetriNetUnfolder]: 1574/3724 cut-off events. [2023-08-31 20:05:18,594 INFO L131 PetriNetUnfolder]: For 98753/98782 co-relation queries the response was YES. [2023-08-31 20:05:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32779 conditions, 3724 events. 1574/3724 cut-off events. For 98753/98782 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29172 event pairs, 252 based on Foata normal form. 115/3837 useless extension candidates. Maximal degree in co-relation 32633. Up to 1057 conditions per place. [2023-08-31 20:05:18,633 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 308 selfloop transitions, 144 changer transitions 530/987 dead transitions. [2023-08-31 20:05:18,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 987 transitions, 22881 flow [2023-08-31 20:05:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 20:05:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 20:05:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1236 transitions. [2023-08-31 20:05:18,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46536144578313254 [2023-08-31 20:05:18,636 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1236 transitions. [2023-08-31 20:05:18,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1236 transitions. [2023-08-31 20:05:18,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1236 transitions. [2023-08-31 20:05:18,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.25) internal successors, (1236), 16 states have internal predecessors, (1236), 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 20:05:18,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 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 20:05:18,640 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 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 20:05:18,640 INFO L175 Difference]: Start difference. First operand has 265 places, 696 transitions, 15806 flow. Second operand 16 states and 1236 transitions. [2023-08-31 20:05:18,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 987 transitions, 22881 flow [2023-08-31 20:05:19,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 987 transitions, 22769 flow, removed 49 selfloop flow, removed 1 redundant places. [2023-08-31 20:05:19,153 INFO L231 Difference]: Finished difference. Result has 285 places, 381 transitions, 7628 flow [2023-08-31 20:05:19,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=15741, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7628, PETRI_PLACES=285, PETRI_TRANSITIONS=381} [2023-08-31 20:05:19,154 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 246 predicate places. [2023-08-31 20:05:19,154 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 381 transitions, 7628 flow [2023-08-31 20:05:19,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:19,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:19,154 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:19,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 20:05:19,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:19,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:19,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1782568220, now seen corresponding path program 5 times [2023-08-31 20:05:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:19,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84942203] [2023-08-31 20:05:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84942203] [2023-08-31 20:05:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84942203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:19,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927702111] [2023-08-31 20:05:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:19,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:05:19,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 381 transitions, 7628 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:05:19,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:19,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:05:19,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:20,386 INFO L130 PetriNetUnfolder]: 654/1771 cut-off events. [2023-08-31 20:05:20,386 INFO L131 PetriNetUnfolder]: For 44693/44760 co-relation queries the response was YES. [2023-08-31 20:05:20,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15827 conditions, 1771 events. 654/1771 cut-off events. For 44693/44760 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12886 event pairs, 85 based on Foata normal form. 39/1793 useless extension candidates. Maximal degree in co-relation 15712. Up to 782 conditions per place. [2023-08-31 20:05:20,405 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 263 selfloop transitions, 171 changer transitions 40/512 dead transitions. [2023-08-31 20:05:20,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 512 transitions, 11021 flow [2023-08-31 20:05:20,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 20:05:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 20:05:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1018 transitions. [2023-08-31 20:05:20,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717330861909175 [2023-08-31 20:05:20,407 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1018 transitions. [2023-08-31 20:05:20,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1018 transitions. [2023-08-31 20:05:20,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:20,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1018 transitions. [2023-08-31 20:05:20,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.3076923076923) internal successors, (1018), 13 states have internal predecessors, (1018), 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 20:05:20,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 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 20:05:20,411 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 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 20:05:20,412 INFO L175 Difference]: Start difference. First operand has 285 places, 381 transitions, 7628 flow. Second operand 13 states and 1018 transitions. [2023-08-31 20:05:20,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 512 transitions, 11021 flow [2023-08-31 20:05:20,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 512 transitions, 9551 flow, removed 179 selfloop flow, removed 44 redundant places. [2023-08-31 20:05:20,656 INFO L231 Difference]: Finished difference. Result has 231 places, 413 transitions, 8036 flow [2023-08-31 20:05:20,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=6582, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8036, PETRI_PLACES=231, PETRI_TRANSITIONS=413} [2023-08-31 20:05:20,657 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 192 predicate places. [2023-08-31 20:05:20,658 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 413 transitions, 8036 flow [2023-08-31 20:05:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 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 20:05:20,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:20,658 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:20,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 20:05:20,658 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:20,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:20,659 INFO L85 PathProgramCache]: Analyzing trace with hash 421579050, now seen corresponding path program 2 times [2023-08-31 20:05:20,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:20,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076864109] [2023-08-31 20:05:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076864109] [2023-08-31 20:05:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076864109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223129399] [2023-08-31 20:05:20,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:21,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:21,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 413 transitions, 8036 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:21,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:21,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:21,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:21,904 INFO L130 PetriNetUnfolder]: 952/2315 cut-off events. [2023-08-31 20:05:21,905 INFO L131 PetriNetUnfolder]: For 42498/42523 co-relation queries the response was YES. [2023-08-31 20:05:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17989 conditions, 2315 events. 952/2315 cut-off events. For 42498/42523 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16442 event pairs, 179 based on Foata normal form. 36/2349 useless extension candidates. Maximal degree in co-relation 17900. Up to 1249 conditions per place. [2023-08-31 20:05:21,924 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 373 selfloop transitions, 166 changer transitions 60/603 dead transitions. [2023-08-31 20:05:21,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 603 transitions, 11731 flow [2023-08-31 20:05:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:05:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:05:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 913 transitions. [2023-08-31 20:05:21,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-31 20:05:21,926 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 913 transitions. [2023-08-31 20:05:21,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 913 transitions. [2023-08-31 20:05:21,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:21,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 913 transitions. [2023-08-31 20:05:21,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.08333333333333) internal successors, (913), 12 states have internal predecessors, (913), 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 20:05:21,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:05:21,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 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 20:05:21,930 INFO L175 Difference]: Start difference. First operand has 231 places, 413 transitions, 8036 flow. Second operand 12 states and 913 transitions. [2023-08-31 20:05:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 603 transitions, 11731 flow [2023-08-31 20:05:22,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 603 transitions, 11577 flow, removed 56 selfloop flow, removed 6 redundant places. [2023-08-31 20:05:22,089 INFO L231 Difference]: Finished difference. Result has 241 places, 442 transitions, 8891 flow [2023-08-31 20:05:22,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8891, PETRI_PLACES=241, PETRI_TRANSITIONS=442} [2023-08-31 20:05:22,089 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2023-08-31 20:05:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 442 transitions, 8891 flow [2023-08-31 20:05:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:22,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:22,090 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 20:05:22,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:22,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash 561536892, now seen corresponding path program 3 times [2023-08-31 20:05:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:22,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633114994] [2023-08-31 20:05:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:22,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633114994] [2023-08-31 20:05:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633114994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4628523] [2023-08-31 20:05:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:22,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:22,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 442 transitions, 8891 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:22,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:22,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:23,307 INFO L130 PetriNetUnfolder]: 864/2146 cut-off events. [2023-08-31 20:05:23,307 INFO L131 PetriNetUnfolder]: For 46643/46667 co-relation queries the response was YES. [2023-08-31 20:05:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17559 conditions, 2146 events. 864/2146 cut-off events. For 46643/46667 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15233 event pairs, 138 based on Foata normal form. 77/2222 useless extension candidates. Maximal degree in co-relation 17466. Up to 1136 conditions per place. [2023-08-31 20:05:23,327 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 371 selfloop transitions, 138 changer transitions 105/618 dead transitions. [2023-08-31 20:05:23,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 618 transitions, 12725 flow [2023-08-31 20:05:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 20:05:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 20:05:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 968 transitions. [2023-08-31 20:05:23,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448563484708063 [2023-08-31 20:05:23,329 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 968 transitions. [2023-08-31 20:05:23,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 968 transitions. [2023-08-31 20:05:23,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:23,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 968 transitions. [2023-08-31 20:05:23,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.46153846153847) internal successors, (968), 13 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:05:23,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 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 20:05:23,333 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 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 20:05:23,334 INFO L175 Difference]: Start difference. First operand has 241 places, 442 transitions, 8891 flow. Second operand 13 states and 968 transitions. [2023-08-31 20:05:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 618 transitions, 12725 flow [2023-08-31 20:05:23,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 618 transitions, 12658 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-31 20:05:23,522 INFO L231 Difference]: Finished difference. Result has 253 places, 426 transitions, 8874 flow [2023-08-31 20:05:23,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=8855, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8874, PETRI_PLACES=253, PETRI_TRANSITIONS=426} [2023-08-31 20:05:23,522 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 214 predicate places. [2023-08-31 20:05:23,523 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 426 transitions, 8874 flow [2023-08-31 20:05:23,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:23,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:23,523 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:23,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 20:05:23,523 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:23,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1019684335, now seen corresponding path program 3 times [2023-08-31 20:05:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:23,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722050144] [2023-08-31 20:05:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722050144] [2023-08-31 20:05:25,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722050144] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572264117] [2023-08-31 20:05:25,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:05:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:25,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:25,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:05:25,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 20:05:25,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 20:05:25,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 20:05:25,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:25,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:05:25,211 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:05:25,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:05:25,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:05:25,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:05:25,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:25,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:25,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:25,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:25,281 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:05:25,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-31 20:05:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:25,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:05:25,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572264117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:25,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:05:25,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 20 [2023-08-31 20:05:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50763594] [2023-08-31 20:05:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-08-31 20:05:25,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:25,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 426 transitions, 8874 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:25,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:25,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:25,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:26,243 INFO L130 PetriNetUnfolder]: 740/1888 cut-off events. [2023-08-31 20:05:26,244 INFO L131 PetriNetUnfolder]: For 47560/47586 co-relation queries the response was YES. [2023-08-31 20:05:26,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16171 conditions, 1888 events. 740/1888 cut-off events. For 47560/47586 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13243 event pairs, 131 based on Foata normal form. 89/1976 useless extension candidates. Maximal degree in co-relation 16074. Up to 761 conditions per place. [2023-08-31 20:05:26,261 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 128 selfloop transitions, 16 changer transitions 444/592 dead transitions. [2023-08-31 20:05:26,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 592 transitions, 13102 flow [2023-08-31 20:05:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 20:05:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 20:05:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1024 transitions. [2023-08-31 20:05:26,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4406196213425129 [2023-08-31 20:05:26,263 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1024 transitions. [2023-08-31 20:05:26,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1024 transitions. [2023-08-31 20:05:26,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:26,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1024 transitions. [2023-08-31 20:05:26,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.14285714285714) internal successors, (1024), 14 states have internal predecessors, (1024), 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 20:05:26,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 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 20:05:26,267 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 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 20:05:26,268 INFO L175 Difference]: Start difference. First operand has 253 places, 426 transitions, 8874 flow. Second operand 14 states and 1024 transitions. [2023-08-31 20:05:26,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 592 transitions, 13102 flow [2023-08-31 20:05:26,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 592 transitions, 12918 flow, removed 82 selfloop flow, removed 6 redundant places. [2023-08-31 20:05:26,478 INFO L231 Difference]: Finished difference. Result has 262 places, 128 transitions, 1985 flow [2023-08-31 20:05:26,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=8764, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1985, PETRI_PLACES=262, PETRI_TRANSITIONS=128} [2023-08-31 20:05:26,478 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 223 predicate places. [2023-08-31 20:05:26,478 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 128 transitions, 1985 flow [2023-08-31 20:05:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:26,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:26,479 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:26,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 20:05:26,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-31 20:05:26,679 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:26,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash -534951778, now seen corresponding path program 8 times [2023-08-31 20:05:26,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:26,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635604578] [2023-08-31 20:05:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:26,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:27,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635604578] [2023-08-31 20:05:27,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635604578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:27,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921411143] [2023-08-31 20:05:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:27,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:27,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:05:27,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 128 transitions, 1985 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:05:27,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:27,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:05:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:27,648 INFO L130 PetriNetUnfolder]: 143/484 cut-off events. [2023-08-31 20:05:27,648 INFO L131 PetriNetUnfolder]: For 8922/8936 co-relation queries the response was YES. [2023-08-31 20:05:27,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 484 events. 143/484 cut-off events. For 8922/8936 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2532 event pairs, 38 based on Foata normal form. 14/495 useless extension candidates. Maximal degree in co-relation 3848. Up to 169 conditions per place. [2023-08-31 20:05:27,653 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 110 selfloop transitions, 36 changer transitions 21/185 dead transitions. [2023-08-31 20:05:27,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 185 transitions, 3216 flow [2023-08-31 20:05:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 706 transitions. [2023-08-31 20:05:27,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725568942436412 [2023-08-31 20:05:27,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 706 transitions. [2023-08-31 20:05:27,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 706 transitions. [2023-08-31 20:05:27,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:27,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 706 transitions. [2023-08-31 20:05:27,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.44444444444444) internal successors, (706), 9 states have internal predecessors, (706), 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 20:05:27,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:27,657 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:27,657 INFO L175 Difference]: Start difference. First operand has 262 places, 128 transitions, 1985 flow. Second operand 9 states and 706 transitions. [2023-08-31 20:05:27,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 185 transitions, 3216 flow [2023-08-31 20:05:27,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 2241 flow, removed 146 selfloop flow, removed 68 redundant places. [2023-08-31 20:05:27,686 INFO L231 Difference]: Finished difference. Result has 180 places, 131 transitions, 1430 flow [2023-08-31 20:05:27,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=180, PETRI_TRANSITIONS=131} [2023-08-31 20:05:27,687 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2023-08-31 20:05:27,687 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 131 transitions, 1430 flow [2023-08-31 20:05:27,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:05:27,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:27,688 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:27,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 20:05:27,688 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:27,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1293712730, now seen corresponding path program 4 times [2023-08-31 20:05:27,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:27,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915581765] [2023-08-31 20:05:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:27,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:27,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915581765] [2023-08-31 20:05:27,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915581765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:27,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:27,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749242348] [2023-08-31 20:05:27,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:27,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:28,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:28,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 131 transitions, 1430 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:28,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:28,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:28,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:28,422 INFO L130 PetriNetUnfolder]: 153/485 cut-off events. [2023-08-31 20:05:28,422 INFO L131 PetriNetUnfolder]: For 3822/3824 co-relation queries the response was YES. [2023-08-31 20:05:28,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 485 events. 153/485 cut-off events. For 3822/3824 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2431 event pairs, 48 based on Foata normal form. 12/494 useless extension candidates. Maximal degree in co-relation 3116. Up to 269 conditions per place. [2023-08-31 20:05:28,427 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 114 selfloop transitions, 37 changer transitions 14/169 dead transitions. [2023-08-31 20:05:28,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 169 transitions, 2233 flow [2023-08-31 20:05:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2023-08-31 20:05:28,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484605087014726 [2023-08-31 20:05:28,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2023-08-31 20:05:28,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2023-08-31 20:05:28,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:28,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2023-08-31 20:05:28,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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 20:05:28,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:28,432 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:28,432 INFO L175 Difference]: Start difference. First operand has 180 places, 131 transitions, 1430 flow. Second operand 9 states and 670 transitions. [2023-08-31 20:05:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 169 transitions, 2233 flow [2023-08-31 20:05:28,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 169 transitions, 2096 flow, removed 22 selfloop flow, removed 11 redundant places. [2023-08-31 20:05:28,453 INFO L231 Difference]: Finished difference. Result has 178 places, 131 transitions, 1421 flow [2023-08-31 20:05:28,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1421, PETRI_PLACES=178, PETRI_TRANSITIONS=131} [2023-08-31 20:05:28,454 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2023-08-31 20:05:28,454 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 131 transitions, 1421 flow [2023-08-31 20:05:28,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:28,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:28,455 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 20:05:28,455 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:28,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash -20383138, now seen corresponding path program 9 times [2023-08-31 20:05:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482172719] [2023-08-31 20:05:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482172719] [2023-08-31 20:05:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482172719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302700146] [2023-08-31 20:05:31,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:05:31,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:31,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:31,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:05:31,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 20:05:31,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 20:05:31,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:31,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 20:05:31,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:31,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:05:31,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:05:31,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:05:31,827 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:05:31,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:05:31,863 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:05:31,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 41 [2023-08-31 20:05:31,878 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:05:31,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:31,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:31,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:31,928 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 20:05:31,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:31,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:31,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:32,059 INFO L321 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2023-08-31 20:05:32,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 88 treesize of output 102 [2023-08-31 20:05:32,149 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-31 20:05:32,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-31 20:05:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:38,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:05:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302700146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:38,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:05:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 29 [2023-08-31 20:05:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826080342] [2023-08-31 20:05:38,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:05:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:05:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=758, Unknown=2, NotChecked=0, Total=870 [2023-08-31 20:05:38,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 166 [2023-08-31 20:05:38,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 131 transitions, 1421 flow. Second operand has 11 states, 11 states have (on average 68.36363636363636) internal successors, (752), 11 states have internal predecessors, (752), 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 20:05:38,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:38,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 166 [2023-08-31 20:05:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:40,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:40,976 INFO L130 PetriNetUnfolder]: 144/477 cut-off events. [2023-08-31 20:05:40,976 INFO L131 PetriNetUnfolder]: For 3480/3491 co-relation queries the response was YES. [2023-08-31 20:05:40,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 477 events. 144/477 cut-off events. For 3480/3491 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2424 event pairs, 40 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 3056. Up to 167 conditions per place. [2023-08-31 20:05:40,979 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 127 selfloop transitions, 34 changer transitions 2/178 dead transitions. [2023-08-31 20:05:40,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 178 transitions, 2320 flow [2023-08-31 20:05:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:05:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:05:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 745 transitions. [2023-08-31 20:05:40,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44879518072289154 [2023-08-31 20:05:40,981 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 745 transitions. [2023-08-31 20:05:40,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 745 transitions. [2023-08-31 20:05:40,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:40,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 745 transitions. [2023-08-31 20:05:40,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 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 20:05:40,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:05:40,983 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 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 20:05:40,983 INFO L175 Difference]: Start difference. First operand has 178 places, 131 transitions, 1421 flow. Second operand 10 states and 745 transitions. [2023-08-31 20:05:40,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 178 transitions, 2320 flow [2023-08-31 20:05:40,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 2200 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-31 20:05:40,998 INFO L231 Difference]: Finished difference. Result has 181 places, 143 transitions, 1617 flow [2023-08-31 20:05:40,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=181, PETRI_TRANSITIONS=143} [2023-08-31 20:05:40,999 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 142 predicate places. [2023-08-31 20:05:40,999 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 143 transitions, 1617 flow [2023-08-31 20:05:40,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.36363636363636) internal successors, (752), 11 states have internal predecessors, (752), 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 20:05:41,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:41,000 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:41,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 20:05:41,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-31 20:05:41,204 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:41,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:41,205 INFO L85 PathProgramCache]: Analyzing trace with hash 889060670, now seen corresponding path program 10 times [2023-08-31 20:05:41,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:41,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447438673] [2023-08-31 20:05:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447438673] [2023-08-31 20:05:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447438673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024325116] [2023-08-31 20:05:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:41,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:41,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-31 20:05:41,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 143 transitions, 1617 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:05:41,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:41,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-31 20:05:41,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:41,983 INFO L130 PetriNetUnfolder]: 123/434 cut-off events. [2023-08-31 20:05:41,983 INFO L131 PetriNetUnfolder]: For 3644/3655 co-relation queries the response was YES. [2023-08-31 20:05:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 434 events. 123/434 cut-off events. For 3644/3655 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2196 event pairs, 24 based on Foata normal form. 28/459 useless extension candidates. Maximal degree in co-relation 2778. Up to 160 conditions per place. [2023-08-31 20:05:41,986 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 81 selfloop transitions, 23 changer transitions 56/175 dead transitions. [2023-08-31 20:05:41,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 175 transitions, 2301 flow [2023-08-31 20:05:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 698 transitions. [2023-08-31 20:05:41,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46720214190093706 [2023-08-31 20:05:41,987 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 698 transitions. [2023-08-31 20:05:41,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 698 transitions. [2023-08-31 20:05:41,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:41,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 698 transitions. [2023-08-31 20:05:41,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.55555555555556) internal successors, (698), 9 states have internal predecessors, (698), 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 20:05:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:41,990 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:41,990 INFO L175 Difference]: Start difference. First operand has 181 places, 143 transitions, 1617 flow. Second operand 9 states and 698 transitions. [2023-08-31 20:05:41,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 175 transitions, 2301 flow [2023-08-31 20:05:42,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 175 transitions, 2160 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-08-31 20:05:42,011 INFO L231 Difference]: Finished difference. Result has 182 places, 111 transitions, 1158 flow [2023-08-31 20:05:42,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=182, PETRI_TRANSITIONS=111} [2023-08-31 20:05:42,012 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2023-08-31 20:05:42,012 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 111 transitions, 1158 flow [2023-08-31 20:05:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 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 20:05:42,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:42,013 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:42,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 20:05:42,013 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:42,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 94813047, now seen corresponding path program 4 times [2023-08-31 20:05:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868923989] [2023-08-31 20:05:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:47,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:47,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868923989] [2023-08-31 20:05:47,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868923989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145957613] [2023-08-31 20:05:47,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 20:05:47,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:47,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:47,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:05:47,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 20:05:47,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 20:05:47,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:47,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:05:47,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:47,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:05:47,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:05:47,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:05:47,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:47,786 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:05:47,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:05:47,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:47,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:47,825 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:05:47,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-31 20:05:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 20:05:47,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:05:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145957613] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:48,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:05:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 36 [2023-08-31 20:05:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950344367] [2023-08-31 20:05:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:48,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:48,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2023-08-31 20:05:48,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:48,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 111 transitions, 1158 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:48,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:48,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:48,953 INFO L130 PetriNetUnfolder]: 107/357 cut-off events. [2023-08-31 20:05:48,953 INFO L131 PetriNetUnfolder]: For 2352/2352 co-relation queries the response was YES. [2023-08-31 20:05:48,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 357 events. 107/357 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1599 event pairs, 28 based on Foata normal form. 14/370 useless extension candidates. Maximal degree in co-relation 2188. Up to 158 conditions per place. [2023-08-31 20:05:48,955 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 107 selfloop transitions, 27 changer transitions 24/161 dead transitions. [2023-08-31 20:05:48,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 161 transitions, 2008 flow [2023-08-31 20:05:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 676 transitions. [2023-08-31 20:05:48,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524765729585007 [2023-08-31 20:05:48,957 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 676 transitions. [2023-08-31 20:05:48,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 676 transitions. [2023-08-31 20:05:48,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:48,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 676 transitions. [2023-08-31 20:05:48,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.11111111111111) internal successors, (676), 9 states have internal predecessors, (676), 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 20:05:48,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:48,959 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:48,959 INFO L175 Difference]: Start difference. First operand has 182 places, 111 transitions, 1158 flow. Second operand 9 states and 676 transitions. [2023-08-31 20:05:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 161 transitions, 2008 flow [2023-08-31 20:05:48,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 161 transitions, 1752 flow, removed 64 selfloop flow, removed 20 redundant places. [2023-08-31 20:05:48,970 INFO L231 Difference]: Finished difference. Result has 163 places, 114 transitions, 1113 flow [2023-08-31 20:05:48,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1113, PETRI_PLACES=163, PETRI_TRANSITIONS=114} [2023-08-31 20:05:48,971 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2023-08-31 20:05:48,971 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 114 transitions, 1113 flow [2023-08-31 20:05:48,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:48,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:48,971 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:48,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 20:05:49,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:49,172 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:49,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1522099857, now seen corresponding path program 5 times [2023-08-31 20:05:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566448565] [2023-08-31 20:05:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:53,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:53,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566448565] [2023-08-31 20:05:53,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566448565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840608105] [2023-08-31 20:05:53,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 20:05:53,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:53,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:05:53,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 20:05:53,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-31 20:05:53,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:53,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:05:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:53,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:05:54,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:05:54,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:05:54,086 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:05:54,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:05:54,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:54,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:54,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:54,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:54,131 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:05:54,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-31 20:05:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 20:05:54,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:05:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840608105] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:54,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:05:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 34 [2023-08-31 20:05:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611205424] [2023-08-31 20:05:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-08-31 20:05:54,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:54,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 114 transitions, 1113 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:54,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:54,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:55,107 INFO L130 PetriNetUnfolder]: 77/278 cut-off events. [2023-08-31 20:05:55,107 INFO L131 PetriNetUnfolder]: For 1528/1528 co-relation queries the response was YES. [2023-08-31 20:05:55,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 278 events. 77/278 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1105 event pairs, 17 based on Foata normal form. 19/296 useless extension candidates. Maximal degree in co-relation 1628. Up to 78 conditions per place. [2023-08-31 20:05:55,109 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 76 selfloop transitions, 17 changer transitions 56/152 dead transitions. [2023-08-31 20:05:55,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 1768 flow [2023-08-31 20:05:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:05:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:05:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 665 transitions. [2023-08-31 20:05:55,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511378848728245 [2023-08-31 20:05:55,110 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 665 transitions. [2023-08-31 20:05:55,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 665 transitions. [2023-08-31 20:05:55,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:55,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 665 transitions. [2023-08-31 20:05:55,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.88888888888889) internal successors, (665), 9 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 20:05:55,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:55,112 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 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 20:05:55,112 INFO L175 Difference]: Start difference. First operand has 163 places, 114 transitions, 1113 flow. Second operand 9 states and 665 transitions. [2023-08-31 20:05:55,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 1768 flow [2023-08-31 20:05:55,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1725 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 20:05:55,121 INFO L231 Difference]: Finished difference. Result has 167 places, 88 transitions, 842 flow [2023-08-31 20:05:55,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=842, PETRI_PLACES=167, PETRI_TRANSITIONS=88} [2023-08-31 20:05:55,121 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2023-08-31 20:05:55,121 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 88 transitions, 842 flow [2023-08-31 20:05:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:55,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:55,122 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:55,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-31 20:05:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:55,327 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:55,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1413472550, now seen corresponding path program 5 times [2023-08-31 20:05:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115758162] [2023-08-31 20:05:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115758162] [2023-08-31 20:05:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115758162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:55,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:55,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:55,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363300672] [2023-08-31 20:05:55,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:55,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:55,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:55,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:55,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:55,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 88 transitions, 842 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:55,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:55,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:55,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:56,098 INFO L130 PetriNetUnfolder]: 73/255 cut-off events. [2023-08-31 20:05:56,098 INFO L131 PetriNetUnfolder]: For 1403/1403 co-relation queries the response was YES. [2023-08-31 20:05:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 255 events. 73/255 cut-off events. For 1403/1403 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 942 event pairs, 23 based on Foata normal form. 17/272 useless extension candidates. Maximal degree in co-relation 1532. Up to 143 conditions per place. [2023-08-31 20:05:56,100 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 71 selfloop transitions, 18 changer transitions 37/129 dead transitions. [2023-08-31 20:05:56,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 129 transitions, 1568 flow [2023-08-31 20:05:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 20:05:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 20:05:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 794 transitions. [2023-08-31 20:05:56,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348302300109529 [2023-08-31 20:05:56,101 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 794 transitions. [2023-08-31 20:05:56,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 794 transitions. [2023-08-31 20:05:56,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:56,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 794 transitions. [2023-08-31 20:05:56,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.18181818181819) internal successors, (794), 11 states have internal predecessors, (794), 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 20:05:56,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 20:05:56,104 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 20:05:56,104 INFO L175 Difference]: Start difference. First operand has 167 places, 88 transitions, 842 flow. Second operand 11 states and 794 transitions. [2023-08-31 20:05:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 129 transitions, 1568 flow [2023-08-31 20:05:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 129 transitions, 1326 flow, removed 14 selfloop flow, removed 27 redundant places. [2023-08-31 20:05:56,111 INFO L231 Difference]: Finished difference. Result has 153 places, 88 transitions, 741 flow [2023-08-31 20:05:56,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=153, PETRI_TRANSITIONS=88} [2023-08-31 20:05:56,111 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 114 predicate places. [2023-08-31 20:05:56,112 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 88 transitions, 741 flow [2023-08-31 20:05:56,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:56,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:56,112 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:56,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 20:05:56,112 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:56,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2077813024, now seen corresponding path program 6 times [2023-08-31 20:05:56,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:56,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562834518] [2023-08-31 20:05:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:56,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:56,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562834518] [2023-08-31 20:05:56,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562834518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:56,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:05:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:05:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104802960] [2023-08-31 20:05:56,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:56,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:56,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:56,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:56,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:05:56,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:56,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 88 transitions, 741 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:56,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:56,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:56,772 INFO L130 PetriNetUnfolder]: 38/164 cut-off events. [2023-08-31 20:05:56,772 INFO L131 PetriNetUnfolder]: For 723/723 co-relation queries the response was YES. [2023-08-31 20:05:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 164 events. 38/164 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 448 event pairs, 6 based on Foata normal form. 24/188 useless extension candidates. Maximal degree in co-relation 887. Up to 50 conditions per place. [2023-08-31 20:05:56,773 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 33 selfloop transitions, 5 changer transitions 80/121 dead transitions. [2023-08-31 20:05:56,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 121 transitions, 1315 flow [2023-08-31 20:05:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 20:05:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 20:05:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 787 transitions. [2023-08-31 20:05:56,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43099671412924423 [2023-08-31 20:05:56,775 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 787 transitions. [2023-08-31 20:05:56,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 787 transitions. [2023-08-31 20:05:56,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:56,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 787 transitions. [2023-08-31 20:05:56,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 71.54545454545455) internal successors, (787), 11 states have internal predecessors, (787), 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 20:05:56,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 20:05:56,778 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 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 20:05:56,778 INFO L175 Difference]: Start difference. First operand has 153 places, 88 transitions, 741 flow. Second operand 11 states and 787 transitions. [2023-08-31 20:05:56,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 121 transitions, 1315 flow [2023-08-31 20:05:56,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 121 transitions, 1214 flow, removed 20 selfloop flow, removed 10 redundant places. [2023-08-31 20:05:56,785 INFO L231 Difference]: Finished difference. Result has 148 places, 41 transitions, 264 flow [2023-08-31 20:05:56,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=264, PETRI_PLACES=148, PETRI_TRANSITIONS=41} [2023-08-31 20:05:56,785 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 109 predicate places. [2023-08-31 20:05:56,786 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 41 transitions, 264 flow [2023-08-31 20:05:56,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 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 20:05:56,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:05:56,786 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:05:56,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 20:05:56,786 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:05:56,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:05:56,787 INFO L85 PathProgramCache]: Analyzing trace with hash 49694097, now seen corresponding path program 6 times [2023-08-31 20:05:56,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:05:56,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680371782] [2023-08-31 20:05:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:05:56,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:05:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:59,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680371782] [2023-08-31 20:05:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680371782] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748759279] [2023-08-31 20:05:59,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 20:05:59,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:59,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:05:59,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 20:05:59,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 20:05:59,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:59,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-31 20:05:59,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:59,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:05:59,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:05:59,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:05:59,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:05:59,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:05:59,663 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 20:05:59,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-31 20:05:59,686 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-31 20:05:59,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-31 20:05:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:05:59,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:05:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748759279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:59,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:05:59,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 25 [2023-08-31 20:05:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321545320] [2023-08-31 20:05:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:05:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:05:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-08-31 20:05:59,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-31 20:05:59,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 41 transitions, 264 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:59,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:59,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-31 20:05:59,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:59,986 INFO L130 PetriNetUnfolder]: 1/42 cut-off events. [2023-08-31 20:05:59,986 INFO L131 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2023-08-31 20:05:59,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 42 events. 1/42 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 11/53 useless extension candidates. Maximal degree in co-relation 182. Up to 15 conditions per place. [2023-08-31 20:05:59,986 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-31 20:05:59,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 42 transitions, 357 flow [2023-08-31 20:05:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 20:05:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 20:05:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 551 transitions. [2023-08-31 20:05:59,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41490963855421686 [2023-08-31 20:05:59,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 551 transitions. [2023-08-31 20:05:59,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 551 transitions. [2023-08-31 20:05:59,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:05:59,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 551 transitions. [2023-08-31 20:05:59,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.875) internal successors, (551), 8 states have internal predecessors, (551), 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 20:05:59,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 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 20:05:59,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 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 20:05:59,990 INFO L175 Difference]: Start difference. First operand has 148 places, 41 transitions, 264 flow. Second operand 8 states and 551 transitions. [2023-08-31 20:05:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 42 transitions, 357 flow [2023-08-31 20:05:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 42 transitions, 226 flow, removed 17 selfloop flow, removed 48 redundant places. [2023-08-31 20:05:59,991 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-31 20:05:59,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-31 20:05:59,991 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2023-08-31 20:05:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-31 20:05:59,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 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 20:05:59,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-31 20:05:59,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-31 20:05:59,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-31 20:05:59,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-31 20:05:59,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-31 20:05:59,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-31 20:05:59,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-31 20:05:59,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-31 20:06:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-31 20:06:00,196 INFO L445 BasicCegarLoop]: Path program histogram: [10, 6, 6, 5, 2, 2, 1, 1, 1] [2023-08-31 20:06:00,200 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 20:06:00,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 20:06:00,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 08:06:00 BasicIcfg [2023-08-31 20:06:00,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 20:06:00,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 20:06:00,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 20:06:00,205 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 20:06:00,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:00:43" (3/4) ... [2023-08-31 20:06:00,207 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 20:06:00,212 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-31 20:06:00,217 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-31 20:06:00,217 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 20:06:00,218 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 20:06:00,253 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 20:06:00,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 20:06:00,255 INFO L158 Benchmark]: Toolchain (without parser) took 318043.88ms. Allocated memory was 77.6MB in the beginning and 12.3GB in the end (delta: 12.3GB). Free memory was 56.5MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2023-08-31 20:06:00,255 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 20:06:00,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.70ms. Allocated memory is still 77.6MB. Free memory was 56.2MB in the beginning and 45.8MB in the end (delta: 10.4MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-08-31 20:06:00,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.41ms. Allocated memory is still 77.6MB. Free memory was 45.8MB in the beginning and 43.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 20:06:00,257 INFO L158 Benchmark]: Boogie Preprocessor took 61.71ms. Allocated memory is still 77.6MB. Free memory was 43.3MB in the beginning and 41.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 20:06:00,257 INFO L158 Benchmark]: RCFGBuilder took 534.28ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 47.1MB in the end (delta: -5.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2023-08-31 20:06:00,258 INFO L158 Benchmark]: TraceAbstraction took 316793.17ms. Allocated memory was 77.6MB in the beginning and 12.3GB in the end (delta: 12.3GB). Free memory was 46.5MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2023-08-31 20:06:00,258 INFO L158 Benchmark]: Witness Printer took 49.99ms. Allocated memory is still 12.3GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 20:06:00,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.70ms. Allocated memory is still 77.6MB. Free memory was 56.2MB in the beginning and 45.8MB in the end (delta: 10.4MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.41ms. Allocated memory is still 77.6MB. Free memory was 45.8MB in the beginning and 43.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.71ms. Allocated memory is still 77.6MB. Free memory was 43.3MB in the beginning and 41.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.28ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 47.1MB in the end (delta: -5.8MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 316793.17ms. Allocated memory was 77.6MB in the beginning and 12.3GB in the end (delta: 12.3GB). Free memory was 46.5MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. * Witness Printer took 49.99ms. Allocated memory is still 12.3GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 97 PlacesBefore, 39 PlacesAfterwards, 97 TransitionsBefore, 36 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 1 ConcurrentYvCompositions, 3 ChoiceCompositions, 68 TotalNumberOfCompositions, 7607 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2210, independent: 1871, independent conditional: 0, independent unconditional: 1871, dependent: 339, dependent conditional: 0, dependent unconditional: 339, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1014, independent: 954, independent conditional: 0, independent unconditional: 954, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2210, independent: 917, independent conditional: 0, independent unconditional: 917, dependent: 279, dependent conditional: 0, dependent unconditional: 279, unknown: 1014, unknown conditional: 0, unknown unconditional: 1014] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 132 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: 316.7s, OverallIterations: 34, TraceHistogramMax: 10, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 118.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 29 mSolverCounterUnknown, 6361 SdHoareTripleChecker+Valid, 76.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4948 mSDsluCounter, 619 SdHoareTripleChecker+Invalid, 74.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 556 mSDsCounter, 2018 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21532 IncrementalHoareTripleChecker+Invalid, 23579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2018 mSolverCounterUnsat, 63 mSDtfsCounter, 21532 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1088 GetRequests, 479 SyntacticMatches, 19 SemanticMatches, 590 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 94.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15806occurred in iteration=20, InterpolantAutomatonStates: 351, 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 191.1s InterpolantComputationTime, 1254 NumberOfCodeBlocks, 1204 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 1404 ConstructedInterpolants, 25 QuantifiedInterpolants, 25567 SizeOfPredicates, 44 NumberOfNonLiveVariables, 2156 ConjunctsInSsa, 522 ConjunctsInUnsatCore, 55 InterpolantComputations, 32 PerfectInterpolantSequences, 1664/2583 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 20:06:00,472 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 Result: TRUE