./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:54:50,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:54:50,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:54:50,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:54:50,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:54:50,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:54:50,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:54:50,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:54:50,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:54:50,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:54:50,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:54:50,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:54:50,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:54:50,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:54:50,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:54:50,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:54:50,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:54:50,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:54:50,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:54:50,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:54:50,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:54:50,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:54:50,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:54:50,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:54:50,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:54:50,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:54:50,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:54:50,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:54:50,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:54:50,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:54:50,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:54:50,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:54:50,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:54:50,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:54:50,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:54:50,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:54:50,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:54:50,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:54:50,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:54:50,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:54:50,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:54:50,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:54:50,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:54:50,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:54:50,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:54:50,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:54:50,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:54:50,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:54:50,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:54:50,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:54:50,970 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:54:50,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:54:50,971 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:54:50,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:54:50,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:54:50,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:54:50,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:54:50,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:54:50,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:54:50,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:54:50,973 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:54:50,974 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:54:50,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:54:50,974 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:54:50,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:54:50,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:54:50,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:54:50,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:54:50,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:54:50,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:54:50,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:54:50,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:54:50,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:54:50,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:54:50,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:54:50,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:54:50,977 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:54:50,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:54:50,978 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:54:50,978 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:54:51,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:54:51,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:54:51,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:54:51,324 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:54:51,324 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:54:51,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-29 02:54:52,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:54:52,907 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:54:52,907 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-29 02:54:52,919 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d338095fb/c1525695db944ff7904a8e1336c7c716/FLAG99cd67f3c [2023-08-29 02:54:52,935 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d338095fb/c1525695db944ff7904a8e1336c7c716 [2023-08-29 02:54:52,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:54:52,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:54:52,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:54:52,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:54:52,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:54:52,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:54:52" (1/1) ... [2023-08-29 02:54:52,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470a0963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:52, skipping insertion in model container [2023-08-29 02:54:52,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:54:52" (1/1) ... [2023-08-29 02:54:52,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:54:52,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:54:53,258 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-08-29 02:54:53,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:54:53,299 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:54:53,370 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-08-29 02:54:53,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:54:53,454 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:54:53,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53 WrapperNode [2023-08-29 02:54:53,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:54:53,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:54:53,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:54:53,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:54:53,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,517 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-29 02:54:53,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:54:53,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:54:53,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:54:53,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:54:53,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,572 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:54:53,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:54:53,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:54:53,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:54:53,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (1/1) ... [2023-08-29 02:54:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:54:53,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:54:53,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 02:54:53,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 02:54:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:54:53,643 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:54:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:54:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:54:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:54:53,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:54:53,645 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:54:53,804 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:54:53,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:54:54,146 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:54:54,160 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:54:54,161 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 02:54:54,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:54:54 BoogieIcfgContainer [2023-08-29 02:54:54,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:54:54,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:54:54,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:54:54,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:54:54,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:54:52" (1/3) ... [2023-08-29 02:54:54,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684818d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:54:54, skipping insertion in model container [2023-08-29 02:54:54,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:53" (2/3) ... [2023-08-29 02:54:54,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684818d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:54:54, skipping insertion in model container [2023-08-29 02:54:54,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:54:54" (3/3) ... [2023-08-29 02:54:54,174 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-08-29 02:54:54,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:54:54,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:54:54,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 02:54:54,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:54:54,269 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:54:54,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,378 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2023-08-29 02:54:54,379 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 232 events. 17/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 670 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-29 02:54:54,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:54:54,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 179 transitions, 366 flow [2023-08-29 02:54:54,497 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2023-08-29 02:54:54,498 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:54,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 232 events. 17/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 670 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-29 02:54:54,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 8142 [2023-08-29 02:54:57,905 INFO L134 LiptonReduction]: Checked pairs total: 44129 [2023-08-29 02:54:57,906 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-29 02:54:57,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:54:57,934 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c27d81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:54:57,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 02:54:57,937 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:54:57,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:57,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:57,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:54:57,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:54:57,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:57,945 INFO L85 PathProgramCache]: Analyzing trace with hash 624, now seen corresponding path program 1 times [2023-08-29 02:54:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90863281] [2023-08-29 02:54:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90863281] [2023-08-29 02:54:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90863281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:54:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397498508] [2023-08-29 02:54:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:58,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:54:58,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:54:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:54:58,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 293 [2023-08-29 02:54:58,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:58,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 293 [2023-08-29 02:54:58,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:58,272 INFO L130 PetriNetUnfolder]: 155/662 cut-off events. [2023-08-29 02:54:58,273 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 662 events. 155/662 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3614 event pairs, 154 based on Foata normal form. 28/623 useless extension candidates. Maximal degree in co-relation 960. Up to 348 conditions per place. [2023-08-29 02:54:58,279 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 29 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-08-29 02:54:58,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 212 flow [2023-08-29 02:54:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:54:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:54:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 368 transitions. [2023-08-29 02:54:58,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6279863481228669 [2023-08-29 02:54:58,299 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 368 transitions. [2023-08-29 02:54:58,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 368 transitions. [2023-08-29 02:54:58,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:58,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 368 transitions. [2023-08-29 02:54:58,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,315 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 293.0) internal successors, (879), 3 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,317 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 172 flow. Second operand 2 states and 368 transitions. [2023-08-29 02:54:58,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 212 flow [2023-08-29 02:54:58,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:54:58,324 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 154 flow [2023-08-29 02:54:58,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-08-29 02:54:58,329 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-08-29 02:54:58,329 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 154 flow [2023-08-29 02:54:58,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:58,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:54:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:54:58,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:54:58,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 618597, now seen corresponding path program 1 times [2023-08-29 02:54:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915790178] [2023-08-29 02:54:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915790178] [2023-08-29 02:54:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915790178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:58,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947185197] [2023-08-29 02:54:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:58,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:58,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 293 [2023-08-29 02:54:58,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:58,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 293 [2023-08-29 02:54:58,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:58,661 INFO L130 PetriNetUnfolder]: 154/667 cut-off events. [2023-08-29 02:54:58,662 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 667 events. 154/667 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3563 event pairs, 130 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 1012. Up to 324 conditions per place. [2023-08-29 02:54:58,665 INFO L137 encePairwiseOnDemand]: 290/293 looper letters, 42 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-29 02:54:58,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 272 flow [2023-08-29 02:54:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-08-29 02:54:58,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006825938566553 [2023-08-29 02:54:58,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-08-29 02:54:58,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-08-29 02:54:58,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:58,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-08-29 02:54:58,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,676 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 154 flow. Second operand 3 states and 528 transitions. [2023-08-29 02:54:58,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 272 flow [2023-08-29 02:54:58,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:54:58,680 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 162 flow [2023-08-29 02:54:58,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-29 02:54:58,681 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-29 02:54:58,681 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 162 flow [2023-08-29 02:54:58,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:58,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:54:58,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:54:58,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:54:58,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash 595316168, now seen corresponding path program 1 times [2023-08-29 02:54:58,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:58,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557120047] [2023-08-29 02:54:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:58,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:58,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:58,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557120047] [2023-08-29 02:54:58,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557120047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:58,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867969613] [2023-08-29 02:54:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:58,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:58,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 293 [2023-08-29 02:54:58,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:58,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 293 [2023-08-29 02:54:58,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:58,884 INFO L130 PetriNetUnfolder]: 192/735 cut-off events. [2023-08-29 02:54:58,884 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-29 02:54:58,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 735 events. 192/735 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3811 event pairs, 150 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 1210. Up to 414 conditions per place. [2023-08-29 02:54:58,888 INFO L137 encePairwiseOnDemand]: 287/293 looper letters, 34 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-29 02:54:58,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 239 flow [2023-08-29 02:54:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-29 02:54:58,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642775881683731 [2023-08-29 02:54:58,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-29 02:54:58,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-29 02:54:58,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:58,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-29 02:54:58,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,894 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 162 flow. Second operand 3 states and 496 transitions. [2023-08-29 02:54:58,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 239 flow [2023-08-29 02:54:58,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:58,897 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 166 flow [2023-08-29 02:54:58,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2023-08-29 02:54:58,899 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-08-29 02:54:58,899 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 166 flow [2023-08-29 02:54:58,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:58,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:58,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:58,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:54:58,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:54:58,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1238746679, now seen corresponding path program 1 times [2023-08-29 02:54:58,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692246063] [2023-08-29 02:54:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692246063] [2023-08-29 02:54:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692246063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:54:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417988872] [2023-08-29 02:54:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:58,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:54:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:54:58,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:54:59,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:54:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:54:59,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:54:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:59,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:54:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:59,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417988872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:54:59,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:54:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:54:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63117436] [2023-08-29 02:54:59,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:54:59,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:54:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:54:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:54:59,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 293 [2023-08-29 02:54:59,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:59,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:59,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 293 [2023-08-29 02:54:59,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:59,265 INFO L130 PetriNetUnfolder]: 28/150 cut-off events. [2023-08-29 02:54:59,265 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-29 02:54:59,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 150 events. 28/150 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 13 based on Foata normal form. 15/162 useless extension candidates. Maximal degree in co-relation 250. Up to 58 conditions per place. [2023-08-29 02:54:59,266 INFO L137 encePairwiseOnDemand]: 290/293 looper letters, 23 selfloop transitions, 2 changer transitions 9/59 dead transitions. [2023-08-29 02:54:59,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 197 flow [2023-08-29 02:54:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:54:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:54:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 674 transitions. [2023-08-29 02:54:59,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5750853242320819 [2023-08-29 02:54:59,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 674 transitions. [2023-08-29 02:54:59,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 674 transitions. [2023-08-29 02:54:59,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:59,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 674 transitions. [2023-08-29 02:54:59,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:59,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:59,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:59,279 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 166 flow. Second operand 4 states and 674 transitions. [2023-08-29 02:54:59,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 197 flow [2023-08-29 02:54:59,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:59,282 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 89 flow [2023-08-29 02:54:59,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-08-29 02:54:59,284 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -23 predicate places. [2023-08-29 02:54:59,284 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 89 flow [2023-08-29 02:54:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:54:59,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:59,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:59,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:54:59,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:54:59,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:54:59,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:59,492 INFO L85 PathProgramCache]: Analyzing trace with hash 846896610, now seen corresponding path program 1 times [2023-08-29 02:54:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152082179] [2023-08-29 02:54:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:59,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:54:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152082179] [2023-08-29 02:54:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152082179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:59,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:59,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:54:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689580033] [2023-08-29 02:54:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:54:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:54:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-08-29 02:55:00,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:00,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-08-29 02:55:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:00,068 INFO L130 PetriNetUnfolder]: 52/154 cut-off events. [2023-08-29 02:55:00,069 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-29 02:55:00,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 154 events. 52/154 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 259 event pairs, 28 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 326. Up to 76 conditions per place. [2023-08-29 02:55:00,070 INFO L137 encePairwiseOnDemand]: 281/293 looper letters, 28 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2023-08-29 02:55:00,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 185 flow [2023-08-29 02:55:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:55:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:55:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 856 transitions. [2023-08-29 02:55:00,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869169510807736 [2023-08-29 02:55:00,073 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 856 transitions. [2023-08-29 02:55:00,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 856 transitions. [2023-08-29 02:55:00,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:00,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 856 transitions. [2023-08-29 02:55:00,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.66666666666666) internal successors, (856), 6 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,080 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,080 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 89 flow. Second operand 6 states and 856 transitions. [2023-08-29 02:55:00,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 185 flow [2023-08-29 02:55:00,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:00,082 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 102 flow [2023-08-29 02:55:00,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-29 02:55:00,085 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -27 predicate places. [2023-08-29 02:55:00,085 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 102 flow [2023-08-29 02:55:00,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:55:00,087 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:55:00,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1688451664, now seen corresponding path program 1 times [2023-08-29 02:55:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592600293] [2023-08-29 02:55:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:00,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592600293] [2023-08-29 02:55:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592600293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:55:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315468291] [2023-08-29 02:55:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:00,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:55:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:55:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:00,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 293 [2023-08-29 02:55:00,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:00,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 293 [2023-08-29 02:55:00,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:00,529 INFO L130 PetriNetUnfolder]: 52/151 cut-off events. [2023-08-29 02:55:00,529 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:00,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 151 events. 52/151 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 243 event pairs, 42 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 352. Up to 111 conditions per place. [2023-08-29 02:55:00,530 INFO L137 encePairwiseOnDemand]: 287/293 looper letters, 33 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-29 02:55:00,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 196 flow [2023-08-29 02:55:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:55:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:55:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 831 transitions. [2023-08-29 02:55:00,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2023-08-29 02:55:00,533 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 831 transitions. [2023-08-29 02:55:00,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 831 transitions. [2023-08-29 02:55:00,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:00,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 831 transitions. [2023-08-29 02:55:00,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,538 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 102 flow. Second operand 6 states and 831 transitions. [2023-08-29 02:55:00,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 196 flow [2023-08-29 02:55:00,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:55:00,540 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 90 flow [2023-08-29 02:55:00,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-29 02:55:00,540 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -28 predicate places. [2023-08-29 02:55:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 90 flow [2023-08-29 02:55:00,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:00,541 INFO L208 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] [2023-08-29 02:55:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:55:00,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 02:55:00,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -975543183, now seen corresponding path program 1 times [2023-08-29 02:55:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666294919] [2023-08-29 02:55:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:00,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:00,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666294919] [2023-08-29 02:55:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666294919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:00,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:55:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181876098] [2023-08-29 02:55:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:00,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:55:00,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:55:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:00,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 293 [2023-08-29 02:55:00,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:00,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:00,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 293 [2023-08-29 02:55:00,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:01,063 INFO L130 PetriNetUnfolder]: 52/148 cut-off events. [2023-08-29 02:55:01,064 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:01,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 148 events. 52/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 237 event pairs, 44 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 334. Up to 116 conditions per place. [2023-08-29 02:55:01,064 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-29 02:55:01,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 184 flow [2023-08-29 02:55:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:55:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:55:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 831 transitions. [2023-08-29 02:55:01,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726962457337884 [2023-08-29 02:55:01,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 831 transitions. [2023-08-29 02:55:01,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 831 transitions. [2023-08-29 02:55:01,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:01,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 831 transitions. [2023-08-29 02:55:01,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:01,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:01,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:01,072 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 90 flow. Second operand 6 states and 831 transitions. [2023-08-29 02:55:01,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 184 flow [2023-08-29 02:55:01,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 174 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:55:01,073 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-29 02:55:01,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-29 02:55:01,074 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -29 predicate places. [2023-08-29 02:55:01,074 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-29 02:55:01,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:01,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 17 remaining) [2023-08-29 02:55:01,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 02:55:01,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 02:55:01,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 02:55:01,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 02:55:01,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 02:55:01,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 02:55:01,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 02:55:01,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 02:55:01,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:55:01,079 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:01,081 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:01,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 179 transitions, 366 flow [2023-08-29 02:55:01,103 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2023-08-29 02:55:01,103 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:01,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 232 events. 17/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 670 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-29 02:55:01,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 179 transitions, 366 flow [2023-08-29 02:55:01,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 173 transitions, 351 flow [2023-08-29 02:55:01,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:01,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 173 transitions, 351 flow [2023-08-29 02:55:01,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 173 transitions, 351 flow [2023-08-29 02:55:01,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 351 flow [2023-08-29 02:55:01,123 INFO L130 PetriNetUnfolder]: 16/226 cut-off events. [2023-08-29 02:55:01,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:01,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 226 events. 16/226 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 652 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-29 02:55:01,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 8142 [2023-08-29 02:55:03,987 INFO L134 LiptonReduction]: Checked pairs total: 36200 [2023-08-29 02:55:03,987 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-29 02:55:03,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:03,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c27d81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:03,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:03,992 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-29 02:55:03,993 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:03,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:03,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:55:03,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:03,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash 121901356, now seen corresponding path program 1 times [2023-08-29 02:55:03,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:03,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779334283] [2023-08-29 02:55:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:04,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:04,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:04,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:04,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:55:04,061 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:04,063 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:04,063 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:04,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:55:04,100 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:55:04,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,148 INFO L130 PetriNetUnfolder]: 31/386 cut-off events. [2023-08-29 02:55:04,148 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:04,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 386 events. 31/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1492 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 234. Up to 8 conditions per place. [2023-08-29 02:55:04,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:04,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2023-08-29 02:55:04,198 INFO L130 PetriNetUnfolder]: 31/386 cut-off events. [2023-08-29 02:55:04,198 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:04,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 386 events. 31/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1492 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 234. Up to 8 conditions per place. [2023-08-29 02:55:04,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 27324 [2023-08-29 02:55:07,123 INFO L134 LiptonReduction]: Checked pairs total: 145670 [2023-08-29 02:55:07,123 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-29 02:55:07,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:07,125 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c27d81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:07,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-29 02:55:07,127 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 02:55:07,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:07,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:07,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:55:07,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:07,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:07,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1191, now seen corresponding path program 1 times [2023-08-29 02:55:07,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:07,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818436467] [2023-08-29 02:55:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:07,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818436467] [2023-08-29 02:55:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818436467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:55:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189669001] [2023-08-29 02:55:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:55:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:55:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:55:07,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 389 [2023-08-29 02:55:07,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:07,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:07,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 389 [2023-08-29 02:55:07,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:08,670 INFO L130 PetriNetUnfolder]: 5778/14564 cut-off events. [2023-08-29 02:55:08,670 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-29 02:55:08,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23798 conditions, 14564 events. 5778/14564 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 136715 event pairs, 5760 based on Foata normal form. 1339/14511 useless extension candidates. Maximal degree in co-relation 15281. Up to 9135 conditions per place. [2023-08-29 02:55:08,782 INFO L137 encePairwiseOnDemand]: 374/389 looper letters, 47 selfloop transitions, 0 changer transitions 0/118 dead transitions. [2023-08-29 02:55:08,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 348 flow [2023-08-29 02:55:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:55:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:55:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 518 transitions. [2023-08-29 02:55:08,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6658097686375322 [2023-08-29 02:55:08,785 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 518 transitions. [2023-08-29 02:55:08,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 518 transitions. [2023-08-29 02:55:08,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:08,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 518 transitions. [2023-08-29 02:55:08,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 259.0) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:08,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:08,789 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:08,789 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 284 flow. Second operand 2 states and 518 transitions. [2023-08-29 02:55:08,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 348 flow [2023-08-29 02:55:08,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:08,795 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 254 flow [2023-08-29 02:55:08,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=254, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2023-08-29 02:55:08,798 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2023-08-29 02:55:08,799 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 254 flow [2023-08-29 02:55:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 228.5) internal successors, (457), 2 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:08,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:08,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:55:08,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:55:08,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:08,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1180539, now seen corresponding path program 1 times [2023-08-29 02:55:08,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:08,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281569723] [2023-08-29 02:55:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281569723] [2023-08-29 02:55:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281569723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:08,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601093501] [2023-08-29 02:55:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:08,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:08,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 389 [2023-08-29 02:55:08,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:08,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:08,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 389 [2023-08-29 02:55:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:10,202 INFO L130 PetriNetUnfolder]: 5777/14544 cut-off events. [2023-08-29 02:55:10,203 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-08-29 02:55:10,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23772 conditions, 14544 events. 5777/14544 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 136719 event pairs, 4933 based on Foata normal form. 0/13138 useless extension candidates. Maximal degree in co-relation 23767. Up to 9110 conditions per place. [2023-08-29 02:55:10,303 INFO L137 encePairwiseOnDemand]: 386/389 looper letters, 62 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2023-08-29 02:55:10,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 135 transitions, 416 flow [2023-08-29 02:55:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-08-29 02:55:10,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6315338474721508 [2023-08-29 02:55:10,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-08-29 02:55:10,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-08-29 02:55:10,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:10,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-08-29 02:55:10,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:10,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:10,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:10,312 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 254 flow. Second operand 3 states and 737 transitions. [2023-08-29 02:55:10,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 135 transitions, 416 flow [2023-08-29 02:55:10,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 135 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:10,317 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 266 flow [2023-08-29 02:55:10,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2023-08-29 02:55:10,318 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 3 predicate places. [2023-08-29 02:55:10,318 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 266 flow [2023-08-29 02:55:10,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:10,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:10,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:10,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:55:10,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:10,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1135337413, now seen corresponding path program 1 times [2023-08-29 02:55:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:10,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142710235] [2023-08-29 02:55:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:10,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142710235] [2023-08-29 02:55:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142710235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56060552] [2023-08-29 02:55:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 389 [2023-08-29 02:55:10,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:10,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:10,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 389 [2023-08-29 02:55:10,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:11,788 INFO L130 PetriNetUnfolder]: 7090/16025 cut-off events. [2023-08-29 02:55:11,789 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2023-08-29 02:55:11,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27912 conditions, 16025 events. 7090/16025 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 142450 event pairs, 6203 based on Foata normal form. 0/15158 useless extension candidates. Maximal degree in co-relation 27905. Up to 11151 conditions per place. [2023-08-29 02:55:11,984 INFO L137 encePairwiseOnDemand]: 380/389 looper letters, 55 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-08-29 02:55:11,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 396 flow [2023-08-29 02:55:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-29 02:55:11,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904027420736933 [2023-08-29 02:55:11,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-29 02:55:11,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-29 02:55:11,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:11,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-29 02:55:11,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:11,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:11,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:11,992 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 266 flow. Second operand 3 states and 689 transitions. [2023-08-29 02:55:11,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 396 flow [2023-08-29 02:55:11,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:11,996 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 275 flow [2023-08-29 02:55:11,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2023-08-29 02:55:11,998 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -1 predicate places. [2023-08-29 02:55:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 275 flow [2023-08-29 02:55:11,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:11,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:11,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 02:55:12,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:12,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -760303278, now seen corresponding path program 1 times [2023-08-29 02:55:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:12,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183580598] [2023-08-29 02:55:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:12,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183580598] [2023-08-29 02:55:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183580598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:12,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:12,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:55:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391460971] [2023-08-29 02:55:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:12,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:55:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:55:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:12,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 389 [2023-08-29 02:55:12,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:12,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:12,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 389 [2023-08-29 02:55:12,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:21,919 INFO L130 PetriNetUnfolder]: 77707/135647 cut-off events. [2023-08-29 02:55:21,919 INFO L131 PetriNetUnfolder]: For 9639/9639 co-relation queries the response was YES. [2023-08-29 02:55:22,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264155 conditions, 135647 events. 77707/135647 cut-off events. For 9639/9639 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 1250767 event pairs, 16161 based on Foata normal form. 0/127793 useless extension candidates. Maximal degree in co-relation 264148. Up to 41713 conditions per place. [2023-08-29 02:55:22,783 INFO L137 encePairwiseOnDemand]: 339/389 looper letters, 338 selfloop transitions, 92 changer transitions 0/455 dead transitions. [2023-08-29 02:55:22,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 455 transitions, 1905 flow [2023-08-29 02:55:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:55:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:55:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1489 transitions. [2023-08-29 02:55:22,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379605826906598 [2023-08-29 02:55:22,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1489 transitions. [2023-08-29 02:55:22,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1489 transitions. [2023-08-29 02:55:22,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:22,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1489 transitions. [2023-08-29 02:55:22,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.16666666666666) internal successors, (1489), 6 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:22,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:22,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:22,798 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 275 flow. Second operand 6 states and 1489 transitions. [2023-08-29 02:55:22,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 455 transitions, 1905 flow [2023-08-29 02:55:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 455 transitions, 1905 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:22,811 INFO L231 Difference]: Finished difference. Result has 131 places, 216 transitions, 967 flow [2023-08-29 02:55:22,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=967, PETRI_PLACES=131, PETRI_TRANSITIONS=216} [2023-08-29 02:55:22,812 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 9 predicate places. [2023-08-29 02:55:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 216 transitions, 967 flow [2023-08-29 02:55:22,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:22,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:22,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:55:22,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:22,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash 357076016, now seen corresponding path program 1 times [2023-08-29 02:55:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776348302] [2023-08-29 02:55:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:23,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776348302] [2023-08-29 02:55:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776348302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:23,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:55:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261456072] [2023-08-29 02:55:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:23,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:55:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:55:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:23,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 389 [2023-08-29 02:55:23,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 216 transitions, 967 flow. Second operand has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:23,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:23,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 389 [2023-08-29 02:55:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:41,003 INFO L130 PetriNetUnfolder]: 119173/202062 cut-off events. [2023-08-29 02:55:41,004 INFO L131 PetriNetUnfolder]: For 112345/114029 co-relation queries the response was YES. [2023-08-29 02:55:41,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548959 conditions, 202062 events. 119173/202062 cut-off events. For 112345/114029 co-relation queries the response was YES. Maximal size of possible extension queue 2854. Compared 1871622 event pairs, 59577 based on Foata normal form. 1614/198274 useless extension candidates. Maximal degree in co-relation 548947. Up to 151600 conditions per place. [2023-08-29 02:55:42,784 INFO L137 encePairwiseOnDemand]: 353/389 looper letters, 388 selfloop transitions, 238 changer transitions 0/651 dead transitions. [2023-08-29 02:55:42,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 651 transitions, 4187 flow [2023-08-29 02:55:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:55:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:55:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1369 transitions. [2023-08-29 02:55:42,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865467009425879 [2023-08-29 02:55:42,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1369 transitions. [2023-08-29 02:55:42,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1369 transitions. [2023-08-29 02:55:42,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:42,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1369 transitions. [2023-08-29 02:55:42,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.16666666666666) internal successors, (1369), 6 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:42,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:42,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:42,796 INFO L175 Difference]: Start difference. First operand has 131 places, 216 transitions, 967 flow. Second operand 6 states and 1369 transitions. [2023-08-29 02:55:42,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 651 transitions, 4187 flow [2023-08-29 02:55:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 651 transitions, 4187 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:42,817 INFO L231 Difference]: Finished difference. Result has 140 places, 475 transitions, 3393 flow [2023-08-29 02:55:42,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3393, PETRI_PLACES=140, PETRI_TRANSITIONS=475} [2023-08-29 02:55:42,818 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 18 predicate places. [2023-08-29 02:55:42,818 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 475 transitions, 3393 flow [2023-08-29 02:55:42,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:42,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:42,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:42,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:55:42,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:55:42,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1355144147, now seen corresponding path program 1 times [2023-08-29 02:55:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962239076] [2023-08-29 02:55:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:42,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:55:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:43,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962239076] [2023-08-29 02:55:43,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962239076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:43,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:43,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:55:43,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206426984] [2023-08-29 02:55:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:43,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:55:43,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:55:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:55:43,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 389 [2023-08-29 02:55:43,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 475 transitions, 3393 flow. Second operand has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:55:43,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:43,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 389 [2023-08-29 02:55:43,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:09,989 INFO L130 PetriNetUnfolder]: 141876/238875 cut-off events. [2023-08-29 02:56:09,990 INFO L131 PetriNetUnfolder]: For 324772/327772 co-relation queries the response was YES. [2023-08-29 02:56:11,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791859 conditions, 238875 events. 141876/238875 cut-off events. For 324772/327772 co-relation queries the response was YES. Maximal size of possible extension queue 3582. Compared 2245237 event pairs, 64245 based on Foata normal form. 1828/233806 useless extension candidates. Maximal degree in co-relation 791842. Up to 181364 conditions per place. [2023-08-29 02:56:12,278 INFO L137 encePairwiseOnDemand]: 353/389 looper letters, 653 selfloop transitions, 354 changer transitions 0/1032 dead transitions. [2023-08-29 02:56:12,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 1032 transitions, 8685 flow [2023-08-29 02:56:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:56:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:56:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1369 transitions. [2023-08-29 02:56:12,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865467009425879 [2023-08-29 02:56:12,282 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1369 transitions. [2023-08-29 02:56:12,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1369 transitions. [2023-08-29 02:56:12,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:12,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1369 transitions. [2023-08-29 02:56:12,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 228.16666666666666) internal successors, (1369), 6 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:12,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:12,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:12,288 INFO L175 Difference]: Start difference. First operand has 140 places, 475 transitions, 3393 flow. Second operand 6 states and 1369 transitions. [2023-08-29 02:56:12,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 1032 transitions, 8685 flow [2023-08-29 02:56:12,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1032 transitions, 8685 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:12,479 INFO L231 Difference]: Finished difference. Result has 150 places, 827 transitions, 7477 flow [2023-08-29 02:56:12,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7477, PETRI_PLACES=150, PETRI_TRANSITIONS=827} [2023-08-29 02:56:12,481 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 28 predicate places. [2023-08-29 02:56:12,481 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 827 transitions, 7477 flow [2023-08-29 02:56:12,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:12,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:12,481 INFO L208 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] [2023-08-29 02:56:12,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:56:12,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:56:12,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash -452686226, now seen corresponding path program 1 times [2023-08-29 02:56:12,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:12,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181780721] [2023-08-29 02:56:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181780721] [2023-08-29 02:56:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181780721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:56:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043016065] [2023-08-29 02:56:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:56:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:56:12,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:56:12,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:56:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:12,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:56:12,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:56:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:12,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:56:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:12,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043016065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:56:12,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:56:12,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:56:12,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332956451] [2023-08-29 02:56:12,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:56:12,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:56:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:56:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:56:12,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 389 [2023-08-29 02:56:12,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 827 transitions, 7477 flow. Second operand has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:12,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:12,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 389 [2023-08-29 02:56:12,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:14,705 INFO L130 PetriNetUnfolder]: 5529/13042 cut-off events. [2023-08-29 02:56:14,706 INFO L131 PetriNetUnfolder]: For 30644/31361 co-relation queries the response was YES. [2023-08-29 02:56:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45563 conditions, 13042 events. 5529/13042 cut-off events. For 30644/31361 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 115988 event pairs, 1239 based on Foata normal form. 952/13615 useless extension candidates. Maximal degree in co-relation 45541. Up to 4874 conditions per place. [2023-08-29 02:56:14,780 INFO L137 encePairwiseOnDemand]: 386/389 looper letters, 332 selfloop transitions, 3 changer transitions 0/543 dead transitions. [2023-08-29 02:56:14,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 543 transitions, 4967 flow [2023-08-29 02:56:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:56:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:56:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1200 transitions. [2023-08-29 02:56:14,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169665809768637 [2023-08-29 02:56:14,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1200 transitions. [2023-08-29 02:56:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1200 transitions. [2023-08-29 02:56:14,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:14,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1200 transitions. [2023-08-29 02:56:14,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:14,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:14,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 389.0) internal successors, (2334), 6 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:14,791 INFO L175 Difference]: Start difference. First operand has 150 places, 827 transitions, 7477 flow. Second operand 5 states and 1200 transitions. [2023-08-29 02:56:14,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 543 transitions, 4967 flow [2023-08-29 02:56:14,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 543 transitions, 4881 flow, removed 43 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:14,857 INFO L231 Difference]: Finished difference. Result has 129 places, 370 transitions, 2878 flow [2023-08-29 02:56:14,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2878, PETRI_PLACES=129, PETRI_TRANSITIONS=370} [2023-08-29 02:56:14,858 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, 7 predicate places. [2023-08-29 02:56:14,858 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 370 transitions, 2878 flow [2023-08-29 02:56:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:14,859 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-29 02:56:14,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:56:15,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 02:56:15,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:56:15,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1283238704, now seen corresponding path program 1 times [2023-08-29 02:56:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839447086] [2023-08-29 02:56:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:15,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839447086] [2023-08-29 02:56:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839447086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:56:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309576870] [2023-08-29 02:56:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:15,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:56:15,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:56:15,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:56:15,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:56:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 02:56:15,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:56:15,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:56:15,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:56:15,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 02:56:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:15,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:56:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309576870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:15,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:56:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-29 02:56:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977800643] [2023-08-29 02:56:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:56:15,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:56:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 02:56:15,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 389 [2023-08-29 02:56:15,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 370 transitions, 2878 flow. Second operand has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:15,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:15,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 389 [2023-08-29 02:56:15,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:15,866 INFO L130 PetriNetUnfolder]: 876/2545 cut-off events. [2023-08-29 02:56:15,867 INFO L131 PetriNetUnfolder]: For 2914/2914 co-relation queries the response was YES. [2023-08-29 02:56:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7917 conditions, 2545 events. 876/2545 cut-off events. For 2914/2914 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 15938 event pairs, 273 based on Foata normal form. 108/2651 useless extension candidates. Maximal degree in co-relation 7894. Up to 1038 conditions per place. [2023-08-29 02:56:15,880 INFO L137 encePairwiseOnDemand]: 380/389 looper letters, 45 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-08-29 02:56:15,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 96 transitions, 599 flow [2023-08-29 02:56:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:56:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:56:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 902 transitions. [2023-08-29 02:56:15,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796915167095116 [2023-08-29 02:56:15,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 902 transitions. [2023-08-29 02:56:15,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 902 transitions. [2023-08-29 02:56:15,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:15,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 902 transitions. [2023-08-29 02:56:15,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.5) internal successors, (902), 4 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:15,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 389.0) internal successors, (1945), 5 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:15,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 389.0) internal successors, (1945), 5 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:15,888 INFO L175 Difference]: Start difference. First operand has 129 places, 370 transitions, 2878 flow. Second operand 4 states and 902 transitions. [2023-08-29 02:56:15,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 96 transitions, 599 flow [2023-08-29 02:56:15,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 338 flow, removed 68 selfloop flow, removed 32 redundant places. [2023-08-29 02:56:15,900 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-29 02:56:15,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-29 02:56:15,901 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -28 predicate places. [2023-08-29 02:56:15,901 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-29 02:56:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:15,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:15,902 INFO L208 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] [2023-08-29 02:56:15,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:56:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:56:16,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:56:16,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1833695667, now seen corresponding path program 1 times [2023-08-29 02:56:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339572381] [2023-08-29 02:56:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339572381] [2023-08-29 02:56:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339572381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:16,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:56:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116122131] [2023-08-29 02:56:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:56:16,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:56:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:56:16,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 389 [2023-08-29 02:56:16,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 180.16666666666666) internal successors, (1081), 6 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:16,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:16,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 389 [2023-08-29 02:56:16,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:16,937 INFO L130 PetriNetUnfolder]: 1823/3545 cut-off events. [2023-08-29 02:56:16,938 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2023-08-29 02:56:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7764 conditions, 3545 events. 1823/3545 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18267 event pairs, 1563 based on Foata normal form. 0/3536 useless extension candidates. Maximal degree in co-relation 7757. Up to 2937 conditions per place. [2023-08-29 02:56:16,949 INFO L137 encePairwiseOnDemand]: 383/389 looper letters, 88 selfloop transitions, 5 changer transitions 13/117 dead transitions. [2023-08-29 02:56:16,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 531 flow [2023-08-29 02:56:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:56:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:56:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1149 transitions. [2023-08-29 02:56:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922879177377892 [2023-08-29 02:56:16,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1149 transitions. [2023-08-29 02:56:16,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1149 transitions. [2023-08-29 02:56:16,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:16,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1149 transitions. [2023-08-29 02:56:16,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.5) internal successors, (1149), 6 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:16,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:16,959 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:16,959 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 1149 transitions. [2023-08-29 02:56:16,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 531 flow [2023-08-29 02:56:16,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 117 transitions, 522 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:56:16,962 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 195 flow [2023-08-29 02:56:16,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2023-08-29 02:56:16,963 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -26 predicate places. [2023-08-29 02:56:16,963 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 195 flow [2023-08-29 02:56:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.16666666666666) internal successors, (1081), 6 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:16,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:16,964 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-29 02:56:16,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:56:16,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 02:56:16,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -876624456, now seen corresponding path program 1 times [2023-08-29 02:56:16,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:16,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714248967] [2023-08-29 02:56:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:56:17,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:17,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714248967] [2023-08-29 02:56:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714248967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:17,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:17,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:56:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480547505] [2023-08-29 02:56:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:17,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:56:17,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:56:17,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:56:17,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 389 [2023-08-29 02:56:17,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:17,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:17,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 389 [2023-08-29 02:56:17,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:17,691 INFO L130 PetriNetUnfolder]: 1393/2683 cut-off events. [2023-08-29 02:56:17,691 INFO L131 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2023-08-29 02:56:17,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 2683 events. 1393/2683 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13085 event pairs, 1203 based on Foata normal form. 24/2701 useless extension candidates. Maximal degree in co-relation 5995. Up to 2280 conditions per place. [2023-08-29 02:56:17,699 INFO L137 encePairwiseOnDemand]: 384/389 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2023-08-29 02:56:17,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 103 transitions, 451 flow [2023-08-29 02:56:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:56:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:56:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1141 transitions. [2023-08-29 02:56:17,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888603256212511 [2023-08-29 02:56:17,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1141 transitions. [2023-08-29 02:56:17,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1141 transitions. [2023-08-29 02:56:17,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:17,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1141 transitions. [2023-08-29 02:56:17,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:17,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:17,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 389.0) internal successors, (2723), 7 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:17,709 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 195 flow. Second operand 6 states and 1141 transitions. [2023-08-29 02:56:17,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 103 transitions, 451 flow [2023-08-29 02:56:17,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 103 transitions, 441 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:56:17,712 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-29 02:56:17,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-29 02:56:17,713 INFO L281 CegarLoopForPetriNet]: 122 programPoint places, -32 predicate places. [2023-08-29 02:56:17,713 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-29 02:56:17,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:17,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (22 of 23 remaining) [2023-08-29 02:56:17,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-08-29 02:56:17,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-08-29 02:56:17,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-08-29 02:56:17,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-08-29 02:56:17,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-08-29 02:56:17,717 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-08-29 02:56:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:56:17,718 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:56:17,718 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:56:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2023-08-29 02:56:17,758 INFO L130 PetriNetUnfolder]: 31/386 cut-off events. [2023-08-29 02:56:17,758 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:56:17,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 386 events. 31/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1492 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 234. Up to 8 conditions per place. [2023-08-29 02:56:17,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2023-08-29 02:56:17,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 249 transitions, 516 flow [2023-08-29 02:56:17,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:56:17,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 249 transitions, 516 flow [2023-08-29 02:56:17,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 249 transitions, 516 flow [2023-08-29 02:56:17,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 249 transitions, 516 flow [2023-08-29 02:56:17,803 INFO L130 PetriNetUnfolder]: 31/385 cut-off events. [2023-08-29 02:56:17,803 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:56:17,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 385 events. 31/385 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1484 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-29 02:56:17,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 27324 [2023-08-29 02:56:20,656 INFO L134 LiptonReduction]: Checked pairs total: 146133 [2023-08-29 02:56:20,656 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-29 02:56:20,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:56:20,658 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c27d81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:56:20,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:56:20,663 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2023-08-29 02:56:20,663 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:56:20,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:20,664 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:56:20,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:56:20,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2072060936, now seen corresponding path program 1 times [2023-08-29 02:56:20,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418669561] [2023-08-29 02:56:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:56:20,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:56:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:56:20,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:56:20,695 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:56:20,695 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:56:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:56:20,695 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:56:20,696 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:56:20,696 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:56:20,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:56:20,730 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:56:20,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,807 INFO L130 PetriNetUnfolder]: 50/583 cut-off events. [2023-08-29 02:56:20,807 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:56:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 583 events. 50/583 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2556 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 394. Up to 16 conditions per place. [2023-08-29 02:56:20,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,820 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:56:20,820 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 321 transitions, 672 flow [2023-08-29 02:56:20,893 INFO L130 PetriNetUnfolder]: 50/583 cut-off events. [2023-08-29 02:56:20,893 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:56:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 583 events. 50/583 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2556 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 394. Up to 16 conditions per place. [2023-08-29 02:56:20,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 55890 [2023-08-29 02:56:23,876 INFO L134 LiptonReduction]: Checked pairs total: 316762 [2023-08-29 02:56:23,876 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-29 02:56:23,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:56:23,878 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c27d81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:56:23,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-29 02:56:23,878 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:56:23,878 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:56:23,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:23,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:56:23,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:56:23,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1876, now seen corresponding path program 1 times [2023-08-29 02:56:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958615582] [2023-08-29 02:56:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958615582] [2023-08-29 02:56:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958615582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:56:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747763210] [2023-08-29 02:56:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:56:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:56:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:56:23,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 481 [2023-08-29 02:56:23,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 182 transitions, 394 flow. Second operand has 2 states, 2 states have (on average 291.5) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:23,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:23,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 481 [2023-08-29 02:56:23,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:45,017 INFO L130 PetriNetUnfolder]: 144863/281665 cut-off events. [2023-08-29 02:56:45,018 INFO L131 PetriNetUnfolder]: For 3029/3029 co-relation queries the response was YES. [2023-08-29 02:56:46,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483494 conditions, 281665 events. 144863/281665 cut-off events. For 3029/3029 co-relation queries the response was YES. Maximal size of possible extension queue 4645. Compared 3301921 event pairs, 144556 based on Foata normal form. 28539/284797 useless extension candidates. Maximal degree in co-relation 173465. Up to 199740 conditions per place. [2023-08-29 02:56:47,118 INFO L137 encePairwiseOnDemand]: 460/481 looper letters, 64 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2023-08-29 02:56:47,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 161 transitions, 480 flow [2023-08-29 02:56:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:56:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:56:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 667 transitions. [2023-08-29 02:56:47,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6933471933471933 [2023-08-29 02:56:47,120 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 667 transitions. [2023-08-29 02:56:47,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 667 transitions. [2023-08-29 02:56:47,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:47,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 667 transitions. [2023-08-29 02:56:47,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 333.5) internal successors, (667), 2 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) [2023-08-29 02:56:47,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:47,124 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:47,124 INFO L175 Difference]: Start difference. First operand has 166 places, 182 transitions, 394 flow. Second operand 2 states and 667 transitions. [2023-08-29 02:56:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 161 transitions, 480 flow [2023-08-29 02:56:47,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:47,131 INFO L231 Difference]: Finished difference. Result has 166 places, 161 transitions, 352 flow [2023-08-29 02:56:47,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=166, PETRI_TRANSITIONS=161} [2023-08-29 02:56:47,132 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, 0 predicate places. [2023-08-29 02:56:47,132 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 161 transitions, 352 flow [2023-08-29 02:56:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 291.5) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:47,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:47,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:56:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:56:47,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:56:47,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1860466, now seen corresponding path program 1 times [2023-08-29 02:56:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719752629] [2023-08-29 02:56:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:56:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719752629] [2023-08-29 02:56:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719752629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:56:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436578240] [2023-08-29 02:56:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:56:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:56:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:56:47,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 481 [2023-08-29 02:56:47,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 161 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:56:47,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:47,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 481 [2023-08-29 02:56:47,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:57:10,415 INFO L130 PetriNetUnfolder]: 144862/289950 cut-off events. [2023-08-29 02:57:10,415 INFO L131 PetriNetUnfolder]: For 3373/3373 co-relation queries the response was YES. [2023-08-29 02:57:11,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491917 conditions, 289950 events. 144862/289950 cut-off events. For 3373/3373 co-relation queries the response was YES. Maximal size of possible extension queue 4793. Compared 3512368 event pairs, 94216 based on Foata normal form. 0/265460 useless extension candidates. Maximal degree in co-relation 491911. Up to 199715 conditions per place. [2023-08-29 02:57:12,522 INFO L137 encePairwiseOnDemand]: 478/481 looper letters, 79 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2023-08-29 02:57:12,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 548 flow [2023-08-29 02:57:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:57:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:57:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 943 transitions. [2023-08-29 02:57:12,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6534996534996536 [2023-08-29 02:57:12,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 943 transitions. [2023-08-29 02:57:12,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 943 transitions. [2023-08-29 02:57:12,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:57:12,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 943 transitions. [2023-08-29 02:57:12,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:12,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:12,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:12,529 INFO L175 Difference]: Start difference. First operand has 166 places, 161 transitions, 352 flow. Second operand 3 states and 943 transitions. [2023-08-29 02:57:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 548 flow [2023-08-29 02:57:12,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 178 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:57:12,534 INFO L231 Difference]: Finished difference. Result has 169 places, 162 transitions, 364 flow [2023-08-29 02:57:12,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2023-08-29 02:57:12,535 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, 3 predicate places. [2023-08-29 02:57:12,535 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 364 flow [2023-08-29 02:57:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:12,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:57:12,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:57:12,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:57:12,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:57:12,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:57:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1789371339, now seen corresponding path program 1 times [2023-08-29 02:57:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:57:12,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626345718] [2023-08-29 02:57:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:57:12,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:57:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:57:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:57:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:57:12,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626345718] [2023-08-29 02:57:12,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626345718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:57:12,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:57:12,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:57:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394618915] [2023-08-29 02:57:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:57:12,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:57:12,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:57:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:57:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:57:12,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 481 [2023-08-29 02:57:12,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:12,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:57:12,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 481 [2023-08-29 02:57:12,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:57:37,829 INFO L130 PetriNetUnfolder]: 188103/329288 cut-off events. [2023-08-29 02:57:37,829 INFO L131 PetriNetUnfolder]: For 13681/13681 co-relation queries the response was YES. [2023-08-29 02:57:39,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600646 conditions, 329288 events. 188103/329288 cut-off events. For 13681/13681 co-relation queries the response was YES. Maximal size of possible extension queue 5322. Compared 3513355 event pairs, 177815 based on Foata normal form. 0/313598 useless extension candidates. Maximal degree in co-relation 600638. Up to 258699 conditions per place. [2023-08-29 02:57:40,382 INFO L137 encePairwiseOnDemand]: 469/481 looper letters, 74 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2023-08-29 02:57:40,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 541 flow [2023-08-29 02:57:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:57:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:57:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-08-29 02:57:40,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112266112266113 [2023-08-29 02:57:40,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-08-29 02:57:40,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-08-29 02:57:40,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:57:40,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-08-29 02:57:40,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:40,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:40,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:40,388 INFO L175 Difference]: Start difference. First operand has 169 places, 162 transitions, 364 flow. Second operand 3 states and 882 transitions. [2023-08-29 02:57:40,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 541 flow [2023-08-29 02:57:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 163 transitions, 538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:57:40,400 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 376 flow [2023-08-29 02:57:40,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2023-08-29 02:57:40,400 INFO L281 CegarLoopForPetriNet]: 166 programPoint places, -3 predicate places. [2023-08-29 02:57:40,400 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 376 flow [2023-08-29 02:57:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:40,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:57:40,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:57:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 02:57:40,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:57:40,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:57:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1667170406, now seen corresponding path program 1 times [2023-08-29 02:57:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:57:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774370944] [2023-08-29 02:57:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:57:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:57:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:57:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:57:40,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:57:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774370944] [2023-08-29 02:57:40,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774370944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:57:40,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:57:40,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:57:40,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490004340] [2023-08-29 02:57:40,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:57:40,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:57:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:57:40,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:57:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:57:40,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 481 [2023-08-29 02:57:40,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:57:40,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:57:40,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 481 [2023-08-29 02:57:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand