./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_51-mutexptr_racefree.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_51-mutexptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:50:00,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:50:00,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:50:00,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:50:00,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:50:00,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:50:00,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:50:00,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:50:00,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:50:00,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:50:00,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:50:00,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:50:00,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:50:00,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:50:00,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:50:00,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:50:00,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:50:00,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:50:00,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:50:00,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:50:00,400 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:50:00,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:50:00,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:50:00,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:50:00,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:50:00,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:50:00,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:50:00,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:50:00,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:50:00,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:50:00,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:50:00,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:50:00,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:50:00,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:50:00,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:50:00,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:50:00,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:50:00,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:50:00,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:50:00,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:50:00,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:50:00,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:50:00,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:50:00,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:50:00,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:50:00,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:50:00,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:50:00,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:50:00,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:50:00,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:50:00,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:50:00,455 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:50:00,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:50:00,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:50:00,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:50:00,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:50:00,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:50:00,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:50:00,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:00,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:50:00,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:50:00,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:50:00,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:50:00,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:50:00,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:50:00,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:50:00,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:50:00,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2022-04-18 15:50:00,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:50:00,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:50:00,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:50:00,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:50:00,769 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:50:00,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-04-18 15:50:00,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6433e4d/d282ec7f94f04b56bbecaff9418ca052/FLAG5d5a5b549 [2022-04-18 15:50:01,244 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:50:01,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-04-18 15:50:01,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6433e4d/d282ec7f94f04b56bbecaff9418ca052/FLAG5d5a5b549 [2022-04-18 15:50:01,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6433e4d/d282ec7f94f04b56bbecaff9418ca052 [2022-04-18 15:50:01,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:50:01,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:50:01,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:01,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:50:01,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:50:01,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:01" (1/1) ... [2022-04-18 15:50:01,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60604918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:01, skipping insertion in model container [2022-04-18 15:50:01,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:01" (1/1) ... [2022-04-18 15:50:01,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:50:01,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:50:01,963 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_51-mutexptr_racefree.i[30176,30189] [2022-04-18 15:50:01,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:02,010 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:50:02,101 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_51-mutexptr_racefree.i[30176,30189] [2022-04-18 15:50:02,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:02,163 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:50:02,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02 WrapperNode [2022-04-18 15:50:02,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:02,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:02,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:50:02,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:50:02,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,228 INFO L137 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-04-18 15:50:02,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:02,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:50:02,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:50:02,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:50:02,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:50:02,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:50:02,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:50:02,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:50:02,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (1/1) ... [2022-04-18 15:50:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:02,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:02,330 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 15:50:02,338 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 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:50:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:50:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:50:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:50:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:50:02,367 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 15:50:02,461 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:50:02,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:50:02,807 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:50:02,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:50:02,816 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-04-18 15:50:02,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:02 BoogieIcfgContainer [2022-04-18 15:50:02,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:50:02,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:50:02,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:50:02,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:50:02,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:50:01" (1/3) ... [2022-04-18 15:50:02,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c404f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:02, skipping insertion in model container [2022-04-18 15:50:02,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:02" (2/3) ... [2022-04-18 15:50:02,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c404f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:02, skipping insertion in model container [2022-04-18 15:50:02,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:02" (3/3) ... [2022-04-18 15:50:02,826 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2022-04-18 15:50:02,830 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:50:02,830 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:50:02,830 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-04-18 15:50:02,831 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:50:02,910 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:50:02,961 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:02,969 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 15:50:02,969 INFO L341 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-04-18 15:50:02,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 378 flow [2022-04-18 15:50:03,075 INFO L129 PetriNetUnfolder]: 17/241 cut-off events. [2022-04-18 15:50:03,075 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:03,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 17/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 708 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-04-18 15:50:03,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 185 transitions, 378 flow [2022-04-18 15:50:03,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 185 transitions, 378 flow [2022-04-18 15:50:03,096 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2022-04-18 15:50:03,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:03,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:03,097 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] [2022-04-18 15:50:03,098 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 15:50:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash -671217092, now seen corresponding path program 1 times [2022-04-18 15:50:03,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594897743] [2022-04-18 15:50:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:03,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:03,346 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 15:50:03,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:03,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594897743] [2022-04-18 15:50:03,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594897743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:03,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:03,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039598295] [2022-04-18 15:50:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:03,360 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:03,402 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 185 [2022-04-18 15:50:03,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 185 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 15:50:03,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:03,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 185 [2022-04-18 15:50:03,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:03,586 INFO L129 PetriNetUnfolder]: 37/584 cut-off events. [2022-04-18 15:50:03,586 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2022-04-18 15:50:03,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 584 events. 37/584 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2495 event pairs, 36 based on Foata normal form. 61/569 useless extension candidates. Maximal degree in co-relation 564. Up to 96 conditions per place. [2022-04-18 15:50:03,594 INFO L132 encePairwiseOnDemand]: 171/185 looper letters, 17 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-04-18 15:50:03,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 172 transitions, 390 flow [2022-04-18 15:50:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-04-18 15:50:03,615 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8828828828828829 [2022-04-18 15:50:03,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-04-18 15:50:03,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-04-18 15:50:03,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:03,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-04-18 15:50:03,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 15:50:03,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:03,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:03,640 INFO L186 Difference]: Start difference. First operand has 176 places, 185 transitions, 378 flow. Second operand 3 states and 490 transitions. [2022-04-18 15:50:03,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 172 transitions, 390 flow [2022-04-18 15:50:03,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 172 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:03,650 INFO L242 Difference]: Finished difference. Result has 176 places, 172 transitions, 356 flow [2022-04-18 15:50:03,652 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=176, PETRI_TRANSITIONS=172} [2022-04-18 15:50:03,655 INFO L335 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2022-04-18 15:50:03,656 INFO L478 AbstractCegarLoop]: Abstraction has has 176 places, 172 transitions, 356 flow [2022-04-18 15:50:03,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 15:50:03,657 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:03,657 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] [2022-04-18 15:50:03,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:50:03,658 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 15:50:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash 93638009, now seen corresponding path program 1 times [2022-04-18 15:50:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47406896] [2022-04-18 15:50:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:03,766 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 15:50:03,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:03,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47406896] [2022-04-18 15:50:03,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47406896] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:03,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:03,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:03,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210163475] [2022-04-18 15:50:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:03,773 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:03,777 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 185 [2022-04-18 15:50:03,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 172 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 15:50:03,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:03,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 185 [2022-04-18 15:50:03,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:03,825 INFO L129 PetriNetUnfolder]: 0/191 cut-off events. [2022-04-18 15:50:03,825 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-04-18 15:50:03,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 191 events. 0/191 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 180 event pairs, 0 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-04-18 15:50:03,826 INFO L132 encePairwiseOnDemand]: 182/185 looper letters, 9 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2022-04-18 15:50:03,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 382 flow [2022-04-18 15:50:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-04-18 15:50:03,828 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9081081081081082 [2022-04-18 15:50:03,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-04-18 15:50:03,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-04-18 15:50:03,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:03,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-04-18 15:50:03,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 15:50:03,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:03,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:03,833 INFO L186 Difference]: Start difference. First operand has 176 places, 172 transitions, 356 flow. Second operand 3 states and 504 transitions. [2022-04-18 15:50:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 382 flow [2022-04-18 15:50:03,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 174 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:03,840 INFO L242 Difference]: Finished difference. Result has 177 places, 172 transitions, 360 flow [2022-04-18 15:50:03,841 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=177, PETRI_TRANSITIONS=172} [2022-04-18 15:50:03,842 INFO L335 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2022-04-18 15:50:03,842 INFO L478 AbstractCegarLoop]: Abstraction has has 177 places, 172 transitions, 360 flow [2022-04-18 15:50:03,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 15:50:03,843 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:03,843 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] [2022-04-18 15:50:03,843 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:50:03,844 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 15:50:03,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1893596655, now seen corresponding path program 1 times [2022-04-18 15:50:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:03,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646800617] [2022-04-18 15:50:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:03,905 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 15:50:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646800617] [2022-04-18 15:50:03,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646800617] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:03,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:03,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:03,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165346834] [2022-04-18 15:50:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:03,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:03,908 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 185 [2022-04-18 15:50:03,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 172 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 15:50:03,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:03,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 185 [2022-04-18 15:50:03,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:03,989 INFO L129 PetriNetUnfolder]: 16/399 cut-off events. [2022-04-18 15:50:03,989 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-04-18 15:50:03,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 399 events. 16/399 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1182 event pairs, 12 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 387. Up to 41 conditions per place. [2022-04-18 15:50:03,992 INFO L132 encePairwiseOnDemand]: 179/185 looper letters, 12 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2022-04-18 15:50:03,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 170 transitions, 384 flow [2022-04-18 15:50:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2022-04-18 15:50:03,995 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8756756756756757 [2022-04-18 15:50:03,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2022-04-18 15:50:03,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2022-04-18 15:50:03,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:03,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2022-04-18 15:50:03,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 15:50:04,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:04,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 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 15:50:04,001 INFO L186 Difference]: Start difference. First operand has 177 places, 172 transitions, 360 flow. Second operand 3 states and 486 transitions. [2022-04-18 15:50:04,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 170 transitions, 384 flow [2022-04-18 15:50:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:04,007 INFO L242 Difference]: Finished difference. Result has 174 places, 170 transitions, 362 flow [2022-04-18 15:50:04,008 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=174, PETRI_TRANSITIONS=170} [2022-04-18 15:50:04,010 INFO L335 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2022-04-18 15:50:04,010 INFO L478 AbstractCegarLoop]: Abstraction has has 174 places, 170 transitions, 362 flow [2022-04-18 15:50:04,011 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 15:50:04,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:04,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:04,011 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:50:04,012 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 15:50:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1569299507, now seen corresponding path program 1 times [2022-04-18 15:50:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592032911] [2022-04-18 15:50:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:04,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:04,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:04,142 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:04,143 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-04-18 15:50:04,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-04-18 15:50:04,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-04-18 15:50:04,149 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-04-18 15:50:04,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-04-18 15:50:04,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-04-18 15:50:04,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-04-18 15:50:04,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-04-18 15:50:04,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-04-18 15:50:04,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-04-18 15:50:04,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-04-18 15:50:04,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-04-18 15:50:04,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-04-18 15:50:04,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-04-18 15:50:04,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-04-18 15:50:04,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-04-18 15:50:04,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-04-18 15:50:04,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-04-18 15:50:04,153 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:50:04,157 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 15:50:04,159 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:04,160 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:50:04,215 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:50:04,218 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:04,222 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 15:50:04,222 INFO L341 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-04-18 15:50:04,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 242 places, 256 transitions, 530 flow [2022-04-18 15:50:04,290 INFO L129 PetriNetUnfolder]: 31/399 cut-off events. [2022-04-18 15:50:04,291 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:50:04,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 399 events. 31/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1553 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2022-04-18 15:50:04,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 256 transitions, 530 flow [2022-04-18 15:50:04,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 256 transitions, 530 flow [2022-04-18 15:50:04,305 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2022-04-18 15:50:04,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:04,305 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:04,305 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] [2022-04-18 15:50:04,309 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:50:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash -867644868, now seen corresponding path program 1 times [2022-04-18 15:50:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:04,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019475981] [2022-04-18 15:50:04,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:04,357 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 15:50:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:04,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019475981] [2022-04-18 15:50:04,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019475981] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:04,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:04,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55163125] [2022-04-18 15:50:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:04,359 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:04,361 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 256 [2022-04-18 15:50:04,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 256 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:04,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:04,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 256 [2022-04-18 15:50:04,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:04,989 INFO L129 PetriNetUnfolder]: 602/3950 cut-off events. [2022-04-18 15:50:04,989 INFO L130 PetriNetUnfolder]: For 74/124 co-relation queries the response was YES. [2022-04-18 15:50:05,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 3950 events. 602/3950 cut-off events. For 74/124 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 33678 event pairs, 594 based on Foata normal form. 617/3927 useless extension candidates. Maximal degree in co-relation 4191. Up to 1013 conditions per place. [2022-04-18 15:50:05,034 INFO L132 encePairwiseOnDemand]: 236/256 looper letters, 25 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2022-04-18 15:50:05,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 546 flow [2022-04-18 15:50:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2022-04-18 15:50:05,037 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.87890625 [2022-04-18 15:50:05,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2022-04-18 15:50:05,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2022-04-18 15:50:05,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:05,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2022-04-18 15:50:05,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 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 15:50:05,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,042 INFO L186 Difference]: Start difference. First operand has 242 places, 256 transitions, 530 flow. Second operand 3 states and 675 transitions. [2022-04-18 15:50:05,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 546 flow [2022-04-18 15:50:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:05,069 INFO L242 Difference]: Finished difference. Result has 242 places, 237 transitions, 496 flow [2022-04-18 15:50:05,070 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2022-04-18 15:50:05,071 INFO L335 CegarLoopForPetriNet]: 242 programPoint places, 0 predicate places. [2022-04-18 15:50:05,071 INFO L478 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 496 flow [2022-04-18 15:50:05,072 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,072 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:05,072 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] [2022-04-18 15:50:05,072 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:50:05,072 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:50:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1976046215, now seen corresponding path program 1 times [2022-04-18 15:50:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:05,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076377103] [2022-04-18 15:50:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:05,119 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 15:50:05,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076377103] [2022-04-18 15:50:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076377103] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:05,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505683063] [2022-04-18 15:50:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:05,121 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:05,123 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 256 [2022-04-18 15:50:05,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 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 15:50:05,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:05,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 256 [2022-04-18 15:50:05,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:05,190 INFO L129 PetriNetUnfolder]: 2/336 cut-off events. [2022-04-18 15:50:05,191 INFO L130 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-04-18 15:50:05,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 336 events. 2/336 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 830 event pairs, 0 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 321. Up to 16 conditions per place. [2022-04-18 15:50:05,194 INFO L132 encePairwiseOnDemand]: 253/256 looper letters, 13 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2022-04-18 15:50:05,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 241 transitions, 534 flow [2022-04-18 15:50:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2022-04-18 15:50:05,196 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9075520833333334 [2022-04-18 15:50:05,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2022-04-18 15:50:05,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2022-04-18 15:50:05,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:05,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2022-04-18 15:50:05,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,201 INFO L186 Difference]: Start difference. First operand has 242 places, 237 transitions, 496 flow. Second operand 3 states and 697 transitions. [2022-04-18 15:50:05,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 241 transitions, 534 flow [2022-04-18 15:50:05,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 241 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:05,206 INFO L242 Difference]: Finished difference. Result has 243 places, 238 transitions, 504 flow [2022-04-18 15:50:05,206 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=243, PETRI_TRANSITIONS=238} [2022-04-18 15:50:05,209 INFO L335 CegarLoopForPetriNet]: 242 programPoint places, 1 predicate places. [2022-04-18 15:50:05,210 INFO L478 AbstractCegarLoop]: Abstraction has has 243 places, 238 transitions, 504 flow [2022-04-18 15:50:05,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 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 15:50:05,210 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:05,211 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] [2022-04-18 15:50:05,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:50:05,211 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:50:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1138287050, now seen corresponding path program 1 times [2022-04-18 15:50:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:05,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075296532] [2022-04-18 15:50:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:05,271 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 15:50:05,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:05,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075296532] [2022-04-18 15:50:05,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075296532] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:05,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:05,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695885210] [2022-04-18 15:50:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:05,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:05,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:05,275 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 256 [2022-04-18 15:50:05,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 238 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:05,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 256 [2022-04-18 15:50:05,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:05,637 INFO L129 PetriNetUnfolder]: 210/2315 cut-off events. [2022-04-18 15:50:05,637 INFO L130 PetriNetUnfolder]: For 57/73 co-relation queries the response was YES. [2022-04-18 15:50:05,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 2315 events. 210/2315 cut-off events. For 57/73 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 17282 event pairs, 167 based on Foata normal form. 0/2119 useless extension candidates. Maximal degree in co-relation 2658. Up to 365 conditions per place. [2022-04-18 15:50:05,658 INFO L132 encePairwiseOnDemand]: 247/256 looper letters, 19 selfloop transitions, 3 changer transitions 0/236 dead transitions. [2022-04-18 15:50:05,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 236 transitions, 549 flow [2022-04-18 15:50:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-04-18 15:50:05,660 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8684895833333334 [2022-04-18 15:50:05,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-04-18 15:50:05,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-04-18 15:50:05,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:05,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-04-18 15:50:05,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 15:50:05,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,666 INFO L186 Difference]: Start difference. First operand has 243 places, 238 transitions, 504 flow. Second operand 3 states and 667 transitions. [2022-04-18 15:50:05,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 236 transitions, 549 flow [2022-04-18 15:50:05,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 236 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:05,672 INFO L242 Difference]: Finished difference. Result has 239 places, 235 transitions, 511 flow [2022-04-18 15:50:05,672 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2022-04-18 15:50:05,674 INFO L335 CegarLoopForPetriNet]: 242 programPoint places, -3 predicate places. [2022-04-18 15:50:05,674 INFO L478 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 511 flow [2022-04-18 15:50:05,675 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:05,675 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:05,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:05,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:50:05,676 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:50:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1647580922, now seen corresponding path program 1 times [2022-04-18 15:50:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:05,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470690471] [2022-04-18 15:50:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:05,835 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 15:50:05,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:05,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470690471] [2022-04-18 15:50:05,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470690471] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:05,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:05,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:50:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141532301] [2022-04-18 15:50:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:05,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:05,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:05,839 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 256 [2022-04-18 15:50:05,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 511 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 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 15:50:05,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:05,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 256 [2022-04-18 15:50:05,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:20,922 INFO L129 PetriNetUnfolder]: 67954/143487 cut-off events. [2022-04-18 15:50:20,923 INFO L130 PetriNetUnfolder]: For 528/591 co-relation queries the response was YES. [2022-04-18 15:50:21,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250682 conditions, 143487 events. 67954/143487 cut-off events. For 528/591 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 1616003 event pairs, 10118 based on Foata normal form. 4/125146 useless extension candidates. Maximal degree in co-relation 246589. Up to 35454 conditions per place. [2022-04-18 15:50:22,290 INFO L132 encePairwiseOnDemand]: 206/256 looper letters, 276 selfloop transitions, 92 changer transitions 0/526 dead transitions. [2022-04-18 15:50:22,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 526 transitions, 1873 flow [2022-04-18 15:50:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:50:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:50:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1339 transitions. [2022-04-18 15:50:22,295 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8717447916666666 [2022-04-18 15:50:22,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1339 transitions. [2022-04-18 15:50:22,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1339 transitions. [2022-04-18 15:50:22,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:22,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1339 transitions. [2022-04-18 15:50:22,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.16666666666666) internal successors, (1339), 6 states have internal predecessors, (1339), 0 states have call successors, (0), 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 15:50:22,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 15:50:22,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 15:50:22,303 INFO L186 Difference]: Start difference. First operand has 239 places, 235 transitions, 511 flow. Second operand 6 states and 1339 transitions. [2022-04-18 15:50:22,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 526 transitions, 1873 flow [2022-04-18 15:50:22,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 526 transitions, 1873 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:22,322 INFO L242 Difference]: Finished difference. Result has 249 places, 335 transitions, 1203 flow [2022-04-18 15:50:22,323 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1203, PETRI_PLACES=249, PETRI_TRANSITIONS=335} [2022-04-18 15:50:22,323 INFO L335 CegarLoopForPetriNet]: 242 programPoint places, 7 predicate places. [2022-04-18 15:50:22,323 INFO L478 AbstractCegarLoop]: Abstraction has has 249 places, 335 transitions, 1203 flow [2022-04-18 15:50:22,324 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 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 15:50:22,324 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:22,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:22,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:50:22,325 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:50:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:22,325 INFO L85 PathProgramCache]: Analyzing trace with hash -883113634, now seen corresponding path program 1 times [2022-04-18 15:50:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:22,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778086796] [2022-04-18 15:50:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:22,348 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:22,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:22,378 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:22,379 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-04-18 15:50:22,379 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-04-18 15:50:22,379 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-04-18 15:50:22,379 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-04-18 15:50:22,379 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-04-18 15:50:22,380 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-04-18 15:50:22,380 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-04-18 15:50:22,380 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-04-18 15:50:22,380 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2022-04-18 15:50:22,380 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-04-18 15:50:22,381 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-04-18 15:50:22,382 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-04-18 15:50:22,383 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-04-18 15:50:22,383 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-04-18 15:50:22,383 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:50:22,384 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:50:22,384 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:22,384 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:50:22,426 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:50:22,427 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:22,428 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 15:50:22,428 INFO L341 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-04-18 15:50:22,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 308 places, 327 transitions, 684 flow [2022-04-18 15:50:22,500 INFO L129 PetriNetUnfolder]: 50/602 cut-off events. [2022-04-18 15:50:22,501 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:50:22,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 602 events. 50/602 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2669 event pairs, 1 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2022-04-18 15:50:22,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 327 transitions, 684 flow [2022-04-18 15:50:22,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 327 transitions, 684 flow [2022-04-18 15:50:22,522 INFO L129 PetriNetUnfolder]: 0/44 cut-off events. [2022-04-18 15:50:22,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:22,522 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:22,522 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] [2022-04-18 15:50:22,523 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:50:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2069120380, now seen corresponding path program 1 times [2022-04-18 15:50:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847628744] [2022-04-18 15:50:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:22,557 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 15:50:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:22,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847628744] [2022-04-18 15:50:22,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847628744] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:22,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:22,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432732439] [2022-04-18 15:50:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:22,560 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:22,562 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 327 [2022-04-18 15:50:22,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 327 transitions, 684 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 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 15:50:22,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:22,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 327 [2022-04-18 15:50:22,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:25,725 INFO L129 PetriNetUnfolder]: 6801/28040 cut-off events. [2022-04-18 15:50:25,726 INFO L130 PetriNetUnfolder]: For 1026/1520 co-relation queries the response was YES. [2022-04-18 15:50:25,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38217 conditions, 28040 events. 6801/28040 cut-off events. For 1026/1520 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 331702 event pairs, 6739 based on Foata normal form. 6446/29347 useless extension candidates. Maximal degree in co-relation 31959. Up to 9742 conditions per place. [2022-04-18 15:50:26,115 INFO L132 encePairwiseOnDemand]: 301/327 looper letters, 33 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-04-18 15:50:26,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 302 transitions, 704 flow [2022-04-18 15:50:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2022-04-18 15:50:26,119 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8766564729867482 [2022-04-18 15:50:26,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2022-04-18 15:50:26,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2022-04-18 15:50:26,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:26,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2022-04-18 15:50:26,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 15:50:26,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:26,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:26,125 INFO L186 Difference]: Start difference. First operand has 308 places, 327 transitions, 684 flow. Second operand 3 states and 860 transitions. [2022-04-18 15:50:26,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 302 transitions, 704 flow [2022-04-18 15:50:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 302 transitions, 704 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:26,133 INFO L242 Difference]: Finished difference. Result has 308 places, 302 transitions, 638 flow [2022-04-18 15:50:26,134 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=308, PETRI_TRANSITIONS=302} [2022-04-18 15:50:26,135 INFO L335 CegarLoopForPetriNet]: 308 programPoint places, 0 predicate places. [2022-04-18 15:50:26,135 INFO L478 AbstractCegarLoop]: Abstraction has has 308 places, 302 transitions, 638 flow [2022-04-18 15:50:26,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 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 15:50:26,136 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:26,136 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] [2022-04-18 15:50:26,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:50:26,136 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:50:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1650177191, now seen corresponding path program 1 times [2022-04-18 15:50:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867420396] [2022-04-18 15:50:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:26,162 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 15:50:26,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:26,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867420396] [2022-04-18 15:50:26,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867420396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:26,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:26,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902672715] [2022-04-18 15:50:26,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:26,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:26,167 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 327 [2022-04-18 15:50:26,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 302 transitions, 638 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 15:50:26,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:26,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 327 [2022-04-18 15:50:26,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:26,277 INFO L129 PetriNetUnfolder]: 7/524 cut-off events. [2022-04-18 15:50:26,277 INFO L130 PetriNetUnfolder]: For 60/158 co-relation queries the response was YES. [2022-04-18 15:50:26,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 524 events. 7/524 cut-off events. For 60/158 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1876 event pairs, 1 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 536. Up to 30 conditions per place. [2022-04-18 15:50:26,287 INFO L132 encePairwiseOnDemand]: 324/327 looper letters, 15 selfloop transitions, 2 changer transitions 0/306 dead transitions. [2022-04-18 15:50:26,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 306 transitions, 680 flow [2022-04-18 15:50:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2022-04-18 15:50:26,290 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9051987767584098 [2022-04-18 15:50:26,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2022-04-18 15:50:26,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2022-04-18 15:50:26,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:26,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2022-04-18 15:50:26,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 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 15:50:26,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:26,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:26,296 INFO L186 Difference]: Start difference. First operand has 308 places, 302 transitions, 638 flow. Second operand 3 states and 888 transitions. [2022-04-18 15:50:26,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 306 transitions, 680 flow [2022-04-18 15:50:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 306 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:26,301 INFO L242 Difference]: Finished difference. Result has 309 places, 303 transitions, 646 flow [2022-04-18 15:50:26,302 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-04-18 15:50:26,303 INFO L335 CegarLoopForPetriNet]: 308 programPoint places, 1 predicate places. [2022-04-18 15:50:26,303 INFO L478 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 646 flow [2022-04-18 15:50:26,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 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 15:50:26,304 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:26,304 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] [2022-04-18 15:50:26,305 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:50:26,305 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:50:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1047983242, now seen corresponding path program 1 times [2022-04-18 15:50:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:26,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321236851] [2022-04-18 15:50:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:26,330 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 15:50:26,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:26,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321236851] [2022-04-18 15:50:26,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321236851] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:26,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:26,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713036074] [2022-04-18 15:50:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:26,332 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:26,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:26,334 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 327 [2022-04-18 15:50:26,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 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 15:50:26,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:26,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 327 [2022-04-18 15:50:26,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:28,105 INFO L129 PetriNetUnfolder]: 1776/12258 cut-off events. [2022-04-18 15:50:28,105 INFO L130 PetriNetUnfolder]: For 564/743 co-relation queries the response was YES. [2022-04-18 15:50:28,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15148 conditions, 12258 events. 1776/12258 cut-off events. For 564/743 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 135439 event pairs, 1534 based on Foata normal form. 0/11211 useless extension candidates. Maximal degree in co-relation 15077. Up to 2619 conditions per place. [2022-04-18 15:50:28,354 INFO L132 encePairwiseOnDemand]: 315/327 looper letters, 26 selfloop transitions, 4 changer transitions 0/301 dead transitions. [2022-04-18 15:50:28,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 301 transitions, 714 flow [2022-04-18 15:50:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2022-04-18 15:50:28,357 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8644240570846076 [2022-04-18 15:50:28,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2022-04-18 15:50:28,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2022-04-18 15:50:28,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:28,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2022-04-18 15:50:28,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 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 15:50:28,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:28,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 0 states have call successors, (0), 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 15:50:28,363 INFO L186 Difference]: Start difference. First operand has 309 places, 303 transitions, 646 flow. Second operand 3 states and 848 transitions. [2022-04-18 15:50:28,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 301 transitions, 714 flow [2022-04-18 15:50:28,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 301 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:28,372 INFO L242 Difference]: Finished difference. Result has 303 places, 299 transitions, 656 flow [2022-04-18 15:50:28,373 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=656, PETRI_PLACES=303, PETRI_TRANSITIONS=299} [2022-04-18 15:50:28,375 INFO L335 CegarLoopForPetriNet]: 308 programPoint places, -5 predicate places. [2022-04-18 15:50:28,375 INFO L478 AbstractCegarLoop]: Abstraction has has 303 places, 299 transitions, 656 flow [2022-04-18 15:50:28,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 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 15:50:28,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:28,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:28,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:50:28,376 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:50:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2065300634, now seen corresponding path program 1 times [2022-04-18 15:50:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:28,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612417811] [2022-04-18 15:50:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:28,484 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 15:50:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:28,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612417811] [2022-04-18 15:50:28,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612417811] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:28,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:28,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:50:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670681818] [2022-04-18 15:50:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:28,486 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:28,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:28,489 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 327 [2022-04-18 15:50:28,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 299 transitions, 656 flow. Second operand has 6 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 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 15:50:28,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:28,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 327 [2022-04-18 15:50:28,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand