./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:49:05,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:49:05,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:49:05,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:49:05,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:49:05,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:49:05,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:49:05,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:49:05,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:49:05,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:49:05,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:49:05,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:49:05,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:49:05,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:49:05,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:49:05,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:49:05,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:49:05,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:49:05,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:49:05,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:49:05,417 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:49:05,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:49:05,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:49:05,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:49:05,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:49:05,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:49:05,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:49:05,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:49:05,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:49:05,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:49:05,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:49:05,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:49:05,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:49:05,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:49:05,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:49:05,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:49:05,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:49:05,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:49:05,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:49:05,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:49:05,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:49:05,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:49:05,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:49:05,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:49:05,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:49:05,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:49:05,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:49:05,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:49:05,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:49:05,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:49:05,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:49:05,464 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:49:05,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:49:05,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:49:05,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:49:05,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:49:05,467 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:49:05,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:49:05,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:49:05,467 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:49:05,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:49:05,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:49:05,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:49:05,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:49:05,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:05,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:49:05,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:49:05,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:49:05,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:49:05,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:49:05,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:49:05,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:49:05,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:49:05,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-04-18 15:49:05,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:49:05,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:49:05,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:49:05,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:49:05,702 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:49:05,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2022-04-18 15:49:05,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5b58ce3/895314df68f54d08bf17bdb529bc50aa/FLAGd53a7762b [2022-04-18 15:49:06,263 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:49:06,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2022-04-18 15:49:06,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5b58ce3/895314df68f54d08bf17bdb529bc50aa/FLAGd53a7762b [2022-04-18 15:49:06,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5b58ce3/895314df68f54d08bf17bdb529bc50aa [2022-04-18 15:49:06,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:06,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:06,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:06,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:06,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:06,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:06" (1/1) ... [2022-04-18 15:49:06,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2186ad15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:06, skipping insertion in model container [2022-04-18 15:49:06,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:06" (1/1) ... [2022-04-18 15:49:06,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:06,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:07,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-04-18 15:49:07,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:07,148 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:07,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-04-18 15:49:07,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:07,255 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:07,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07 WrapperNode [2022-04-18 15:49:07,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:07,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:07,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:07,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:07,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,323 INFO L137 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-04-18 15:49:07,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:07,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:07,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:07,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:07,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:07,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:07,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:07,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (1/1) ... [2022-04-18 15:49:07,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:07,389 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) [2022-04-18 15:49:07,398 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 [2022-04-18 15:49:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:49:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:49:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:07,436 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:49:07,547 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:07,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:07,825 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:07,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:07,833 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-04-18 15:49:07,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:07 BoogieIcfgContainer [2022-04-18 15:49:07,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:07,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:07,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:07,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:07,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:06" (1/3) ... [2022-04-18 15:49:07,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2582f03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:07, skipping insertion in model container [2022-04-18 15:49:07,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:07" (2/3) ... [2022-04-18 15:49:07,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2582f03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:07, skipping insertion in model container [2022-04-18 15:49:07,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:07" (3/3) ... [2022-04-18 15:49:07,846 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-04-18 15:49:07,850 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:07,850 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:07,850 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-04-18 15:49:07,850 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:07,935 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:49:07,976 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:07,982 INFO L340 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 [2022-04-18 15:49:07,982 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-04-18 15:49:07,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 160 transitions, 328 flow [2022-04-18 15:49:08,052 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2022-04-18 15:49:08,053 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:49:08,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 17/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 630 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2022-04-18 15:49:08,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 160 transitions, 328 flow [2022-04-18 15:49:08,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 160 transitions, 328 flow [2022-04-18 15:49:08,082 INFO L129 PetriNetUnfolder]: 3/83 cut-off events. [2022-04-18 15:49:08,082 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:08,082 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:08,083 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:08,084 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 15:49:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1249089901, now seen corresponding path program 1 times [2022-04-18 15:49:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:08,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251510788] [2022-04-18 15:49:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:08,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:08,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:08,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251510788] [2022-04-18 15:49:08,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251510788] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:08,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:08,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413444737] [2022-04-18 15:49:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:08,382 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:08,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:08,411 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 160 [2022-04-18 15:49:08,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 160 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:08,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 160 [2022-04-18 15:49:08,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:08,474 INFO L129 PetriNetUnfolder]: 0/167 cut-off events. [2022-04-18 15:49:08,474 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-04-18 15:49:08,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 167 events. 0/167 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 24/180 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-04-18 15:49:08,478 INFO L132 encePairwiseOnDemand]: 146/160 looper letters, 9 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2022-04-18 15:49:08,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 150 transitions, 330 flow [2022-04-18 15:49:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-04-18 15:49:08,492 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.93125 [2022-04-18 15:49:08,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-04-18 15:49:08,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-04-18 15:49:08,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:08,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-04-18 15:49:08,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,507 INFO L186 Difference]: Start difference. First operand has 151 places, 160 transitions, 328 flow. Second operand 3 states and 447 transitions. [2022-04-18 15:49:08,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 150 transitions, 330 flow [2022-04-18 15:49:08,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:08,516 INFO L242 Difference]: Finished difference. Result has 153 places, 148 transitions, 312 flow [2022-04-18 15:49:08,518 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-04-18 15:49:08,521 INFO L335 CegarLoopForPetriNet]: 151 programPoint places, 2 predicate places. [2022-04-18 15:49:08,522 INFO L478 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 312 flow [2022-04-18 15:49:08,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,522 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:08,523 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:08,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:08,523 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 15:49:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:08,524 INFO L85 PathProgramCache]: Analyzing trace with hash 404138476, now seen corresponding path program 1 times [2022-04-18 15:49:08,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:08,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605868872] [2022-04-18 15:49:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:08,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:08,569 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:08,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:08,611 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:08,613 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-04-18 15:49:08,614 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-04-18 15:49:08,615 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-04-18 15:49:08,615 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-04-18 15:49:08,615 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-04-18 15:49:08,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-04-18 15:49:08,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-04-18 15:49:08,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-04-18 15:49:08,616 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-04-18 15:49:08,617 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-04-18 15:49:08,617 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-04-18 15:49:08,617 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:08,620 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:49:08,622 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:08,622 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:08,658 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:49:08,660 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:08,661 INFO L340 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 [2022-04-18 15:49:08,661 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 15:49:08,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 223 transitions, 464 flow [2022-04-18 15:49:08,720 INFO L129 PetriNetUnfolder]: 31/352 cut-off events. [2022-04-18 15:49:08,720 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:49:08,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 352 events. 31/352 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1354 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2022-04-18 15:49:08,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 223 transitions, 464 flow [2022-04-18 15:49:08,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 223 transitions, 464 flow [2022-04-18 15:49:08,736 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2022-04-18 15:49:08,736 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:08,736 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:08,737 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:08,737 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1605285237, now seen corresponding path program 1 times [2022-04-18 15:49:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:08,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686497630] [2022-04-18 15:49:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:08,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686497630] [2022-04-18 15:49:08,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686497630] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:08,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:08,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:08,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296538555] [2022-04-18 15:49:08,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:08,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:08,795 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 223 [2022-04-18 15:49:08,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 223 transitions, 464 flow. Second operand has 2 states, 2 states have (on average 201.5) internal successors, (403), 2 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:08,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 223 [2022-04-18 15:49:08,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:08,875 INFO L129 PetriNetUnfolder]: 3/321 cut-off events. [2022-04-18 15:49:08,876 INFO L130 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2022-04-18 15:49:08,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 321 events. 3/321 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 888 event pairs, 0 based on Foata normal form. 42/337 useless extension candidates. Maximal degree in co-relation 195. Up to 7 conditions per place. [2022-04-18 15:49:08,879 INFO L132 encePairwiseOnDemand]: 206/223 looper letters, 4 selfloop transitions, 0 changer transitions 0/205 dead transitions. [2022-04-18 15:49:08,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 205 transitions, 436 flow [2022-04-18 15:49:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 423 transitions. [2022-04-18 15:49:08,885 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9484304932735426 [2022-04-18 15:49:08,885 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 423 transitions. [2022-04-18 15:49:08,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 423 transitions. [2022-04-18 15:49:08,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:08,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 423 transitions. [2022-04-18 15:49:08,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 211.5) internal successors, (423), 2 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,890 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,890 INFO L186 Difference]: Start difference. First operand has 209 places, 223 transitions, 464 flow. Second operand 2 states and 423 transitions. [2022-04-18 15:49:08,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 205 transitions, 436 flow [2022-04-18 15:49:08,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 205 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:08,902 INFO L242 Difference]: Finished difference. Result has 209 places, 205 transitions, 428 flow [2022-04-18 15:49:08,903 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=428, PETRI_PLACES=209, PETRI_TRANSITIONS=205} [2022-04-18 15:49:08,904 INFO L335 CegarLoopForPetriNet]: 209 programPoint places, 0 predicate places. [2022-04-18 15:49:08,904 INFO L478 AbstractCegarLoop]: Abstraction has has 209 places, 205 transitions, 428 flow [2022-04-18 15:49:08,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 201.5) internal successors, (403), 2 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:08,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:08,906 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:08,907 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:08,907 INFO L85 PathProgramCache]: Analyzing trace with hash 892730700, now seen corresponding path program 1 times [2022-04-18 15:49:08,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:08,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804795423] [2022-04-18 15:49:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:08,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804795423] [2022-04-18 15:49:08,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804795423] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:08,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:08,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558854744] [2022-04-18 15:49:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:08,988 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:08,991 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 223 [2022-04-18 15:49:08,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 205 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:08,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:08,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 223 [2022-04-18 15:49:08,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:09,079 INFO L129 PetriNetUnfolder]: 2/297 cut-off events. [2022-04-18 15:49:09,079 INFO L130 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-04-18 15:49:09,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 297 events. 2/297 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 720 event pairs, 0 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 328. Up to 16 conditions per place. [2022-04-18 15:49:09,084 INFO L132 encePairwiseOnDemand]: 220/223 looper letters, 13 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2022-04-18 15:49:09,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 209 transitions, 466 flow [2022-04-18 15:49:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-04-18 15:49:09,088 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8938714499252616 [2022-04-18 15:49:09,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-04-18 15:49:09,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-04-18 15:49:09,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:09,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-04-18 15:49:09,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:09,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:09,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:09,095 INFO L186 Difference]: Start difference. First operand has 209 places, 205 transitions, 428 flow. Second operand 3 states and 598 transitions. [2022-04-18 15:49:09,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 209 transitions, 466 flow [2022-04-18 15:49:09,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 209 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:09,104 INFO L242 Difference]: Finished difference. Result has 212 places, 206 transitions, 440 flow [2022-04-18 15:49:09,105 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=212, PETRI_TRANSITIONS=206} [2022-04-18 15:49:09,108 INFO L335 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-04-18 15:49:09,108 INFO L478 AbstractCegarLoop]: Abstraction has has 212 places, 206 transitions, 440 flow [2022-04-18 15:49:09,109 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:09,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:09,110 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:09,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:09,113 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1802761011, now seen corresponding path program 1 times [2022-04-18 15:49:09,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:09,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261718812] [2022-04-18 15:49:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:09,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:09,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:09,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261718812] [2022-04-18 15:49:09,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261718812] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:09,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:09,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:49:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354084187] [2022-04-18 15:49:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:09,333 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:49:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:49:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:49:09,337 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 223 [2022-04-18 15:49:09,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 206 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:09,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:09,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 223 [2022-04-18 15:49:09,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:16,269 INFO L129 PetriNetUnfolder]: 23597/47423 cut-off events. [2022-04-18 15:49:16,270 INFO L130 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2022-04-18 15:49:16,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84234 conditions, 47423 events. 23597/47423 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 454615 event pairs, 13144 based on Foata normal form. 0/41667 useless extension candidates. Maximal degree in co-relation 84227. Up to 25822 conditions per place. [2022-04-18 15:49:16,642 INFO L132 encePairwiseOnDemand]: 201/223 looper letters, 189 selfloop transitions, 44 changer transitions 0/370 dead transitions. [2022-04-18 15:49:16,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 370 transitions, 1266 flow [2022-04-18 15:49:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:49:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:49:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1051 transitions. [2022-04-18 15:49:16,646 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7855007473841554 [2022-04-18 15:49:16,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1051 transitions. [2022-04-18 15:49:16,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1051 transitions. [2022-04-18 15:49:16,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:16,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1051 transitions. [2022-04-18 15:49:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.16666666666666) internal successors, (1051), 6 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:16,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:16,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:16,654 INFO L186 Difference]: Start difference. First operand has 212 places, 206 transitions, 440 flow. Second operand 6 states and 1051 transitions. [2022-04-18 15:49:16,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 370 transitions, 1266 flow [2022-04-18 15:49:16,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 370 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:16,664 INFO L242 Difference]: Finished difference. Result has 221 places, 248 transitions, 738 flow [2022-04-18 15:49:16,664 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=221, PETRI_TRANSITIONS=248} [2022-04-18 15:49:16,666 INFO L335 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2022-04-18 15:49:16,666 INFO L478 AbstractCegarLoop]: Abstraction has has 221 places, 248 transitions, 738 flow [2022-04-18 15:49:16,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.33333333333334) internal successors, (824), 6 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:16,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:16,667 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:16,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:49:16,668 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash 548899076, now seen corresponding path program 1 times [2022-04-18 15:49:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:16,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7281183] [2022-04-18 15:49:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7281183] [2022-04-18 15:49:16,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7281183] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:49:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257956289] [2022-04-18 15:49:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:16,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:16,742 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) [2022-04-18 15:49:16,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:49:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:16,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:49:16,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:49:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:17,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:49:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:17,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257956289] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:49:17,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:49:17,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:49:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226161442] [2022-04-18 15:49:17,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:49:17,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:49:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:49:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:49:17,155 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 223 [2022-04-18 15:49:17,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 248 transitions, 738 flow. Second operand has 10 states, 10 states have (on average 195.3) internal successors, (1953), 10 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:17,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 223 [2022-04-18 15:49:17,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:17,307 INFO L129 PetriNetUnfolder]: 156/954 cut-off events. [2022-04-18 15:49:17,308 INFO L130 PetriNetUnfolder]: For 108/118 co-relation queries the response was YES. [2022-04-18 15:49:17,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 954 events. 156/954 cut-off events. For 108/118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5496 event pairs, 15 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 1541. Up to 190 conditions per place. [2022-04-18 15:49:17,321 INFO L132 encePairwiseOnDemand]: 218/223 looper letters, 9 selfloop transitions, 7 changer transitions 0/209 dead transitions. [2022-04-18 15:49:17,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 209 transitions, 684 flow [2022-04-18 15:49:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:49:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:49:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1755 transitions. [2022-04-18 15:49:17,325 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.874439461883408 [2022-04-18 15:49:17,325 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1755 transitions. [2022-04-18 15:49:17,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1755 transitions. [2022-04-18 15:49:17,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:17,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1755 transitions. [2022-04-18 15:49:17,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,337 INFO L186 Difference]: Start difference. First operand has 221 places, 248 transitions, 738 flow. Second operand 9 states and 1755 transitions. [2022-04-18 15:49:17,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 209 transitions, 684 flow [2022-04-18 15:49:17,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 209 transitions, 682 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:17,346 INFO L242 Difference]: Finished difference. Result has 186 places, 205 transitions, 656 flow [2022-04-18 15:49:17,346 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=186, PETRI_TRANSITIONS=205} [2022-04-18 15:49:17,349 INFO L335 CegarLoopForPetriNet]: 209 programPoint places, -23 predicate places. [2022-04-18 15:49:17,350 INFO L478 AbstractCegarLoop]: Abstraction has has 186 places, 205 transitions, 656 flow [2022-04-18 15:49:17,351 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.3) internal successors, (1953), 10 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,351 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:17,351 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:17,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:49:17,567 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-04-18 15:49:17,568 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1424425150, now seen corresponding path program 1 times [2022-04-18 15:49:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616570600] [2022-04-18 15:49:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:17,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:17,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:17,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:17,624 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:17,624 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-04-18 15:49:17,624 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 15:49:17,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 15:49:17,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 15:49:17,625 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 15:49:17,626 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 15:49:17,630 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 15:49:17,630 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 15:49:17,634 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 15:49:17,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 15:49:17,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-04-18 15:49:17,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-04-18 15:49:17,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 15:49:17,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 15:49:17,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 15:49:17,637 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:49:17,637 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:49:17,638 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:17,638 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:49:17,685 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:49:17,687 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:17,690 INFO L340 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 [2022-04-18 15:49:17,690 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-04-18 15:49:17,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 267 places, 286 transitions, 602 flow [2022-04-18 15:49:17,754 INFO L129 PetriNetUnfolder]: 50/540 cut-off events. [2022-04-18 15:49:17,754 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:49:17,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 540 events. 50/540 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2338 event pairs, 1 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 360. Up to 16 conditions per place. [2022-04-18 15:49:17,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 286 transitions, 602 flow [2022-04-18 15:49:17,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 286 transitions, 602 flow [2022-04-18 15:49:17,776 INFO L129 PetriNetUnfolder]: 3/84 cut-off events. [2022-04-18 15:49:17,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:17,776 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:17,779 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:17,780 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:49:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash 31237226, now seen corresponding path program 1 times [2022-04-18 15:49:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:17,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942091926] [2022-04-18 15:49:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:17,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:17,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942091926] [2022-04-18 15:49:17,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942091926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:17,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:17,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306186149] [2022-04-18 15:49:17,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:17,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:17,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:17,823 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 286 [2022-04-18 15:49:17,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 286 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:17,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 286 [2022-04-18 15:49:17,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:17,907 INFO L129 PetriNetUnfolder]: 7/470 cut-off events. [2022-04-18 15:49:17,907 INFO L130 PetriNetUnfolder]: For 77/224 co-relation queries the response was YES. [2022-04-18 15:49:17,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 470 events. 7/470 cut-off events. For 77/224 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1652 event pairs, 1 based on Foata normal form. 154/585 useless extension candidates. Maximal degree in co-relation 325. Up to 30 conditions per place. [2022-04-18 15:49:17,914 INFO L132 encePairwiseOnDemand]: 260/286 looper letters, 15 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2022-04-18 15:49:17,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 266 transitions, 596 flow [2022-04-18 15:49:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-04-18 15:49:17,917 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9265734265734266 [2022-04-18 15:49:17,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-04-18 15:49:17,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-04-18 15:49:17,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:17,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-04-18 15:49:17,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,922 INFO L186 Difference]: Start difference. First operand has 267 places, 286 transitions, 602 flow. Second operand 3 states and 795 transitions. [2022-04-18 15:49:17,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 266 transitions, 596 flow [2022-04-18 15:49:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 266 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:17,927 INFO L242 Difference]: Finished difference. Result has 269 places, 263 transitions, 566 flow [2022-04-18 15:49:17,928 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=269, PETRI_TRANSITIONS=263} [2022-04-18 15:49:17,930 INFO L335 CegarLoopForPetriNet]: 267 programPoint places, 2 predicate places. [2022-04-18 15:49:17,930 INFO L478 AbstractCegarLoop]: Abstraction has has 269 places, 263 transitions, 566 flow [2022-04-18 15:49:17,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:17,931 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:17,931 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:17,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:49:17,932 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:49:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 401591312, now seen corresponding path program 1 times [2022-04-18 15:49:17,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:17,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920538333] [2022-04-18 15:49:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:18,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920538333] [2022-04-18 15:49:18,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920538333] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:49:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495208648] [2022-04-18 15:49:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:18,026 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:49:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:49:18,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:49:18,028 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 286 [2022-04-18 15:49:18,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 263 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:18,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:18,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 286 [2022-04-18 15:49:18,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand