./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:49:51,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:49:51,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:49:51,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:49:51,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:49:51,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:49:51,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:49:51,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:49:51,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:49:51,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:49:51,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:49:51,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:49:51,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:49:51,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:49:51,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:49:51,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:49:51,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:49:51,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:49:51,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:49:51,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:49:51,979 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:49:51,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:49:51,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:49:51,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:49:51,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:49:51,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:49:51,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:49:51,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:49:51,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:49:51,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:49:51,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:49:51,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:49:51,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:49:51,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:49:51,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:49:51,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:49:51,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:49:51,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:49:51,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:49:51,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:49:51,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:49:51,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:49:51,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:49:52,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:49:52,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:49:52,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:49:52,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:49:52,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:49:52,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:49:52,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:49:52,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:49:52,012 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:49:52,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:49:52,013 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:49:52,013 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:49:52,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:49:52,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:49:52,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:49:52,014 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:49:52,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:49:52,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:49:52,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:49:52,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:49:52,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:52,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:49:52,016 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:49:52,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:49:52,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2022-04-18 15:49:52,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:49:52,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:49:52,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:49:52,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:49:52,216 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:49:52,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-04-18 15:49:52,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64ef0c5/d551354516ff443aa8bd5db17d1aa4a9/FLAG16e5e80e6 [2022-04-18 15:49:52,664 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:49:52,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2022-04-18 15:49:52,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64ef0c5/d551354516ff443aa8bd5db17d1aa4a9/FLAG16e5e80e6 [2022-04-18 15:49:52,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be64ef0c5/d551354516ff443aa8bd5db17d1aa4a9 [2022-04-18 15:49:52,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:52,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:52,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:52,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:52,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:52,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:52" (1/1) ... [2022-04-18 15:49:52,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c89dda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:52, skipping insertion in model container [2022-04-18 15:49:52,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:52" (1/1) ... [2022-04-18 15:49:52,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:52,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:52,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-04-18 15:49:53,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:53,036 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:53,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2022-04-18 15:49:53,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:53,112 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:53,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53 WrapperNode [2022-04-18 15:49:53,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:53,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:53,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:53,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:53,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,144 INFO L137 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2022-04-18 15:49:53,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:53,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:53,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:53,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:53,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:53,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:53,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:53,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:53,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (1/1) ... [2022-04-18 15:49:53,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:53,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:49:53,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:49:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:53,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:49:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:49:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-04-18 15:49:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:53,266 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:49:53,355 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:53,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:53,590 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:53,599 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:53,603 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-04-18 15:49:53,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:53 BoogieIcfgContainer [2022-04-18 15:49:53,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:53,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:53,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:53,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:53,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:52" (1/3) ... [2022-04-18 15:49:53,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d4473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:53, skipping insertion in model container [2022-04-18 15:49:53,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:53" (2/3) ... [2022-04-18 15:49:53,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1d4473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:53, skipping insertion in model container [2022-04-18 15:49:53,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:53" (3/3) ... [2022-04-18 15:49:53,617 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2022-04-18 15:49:53,621 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:53,621 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:53,621 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-04-18 15:49:53,621 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:53,668 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:49:53,709 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:53,713 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:49:53,713 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 15:49:53,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 216 places, 242 transitions, 492 flow [2022-04-18 15:49:53,804 INFO L129 PetriNetUnfolder]: 45/350 cut-off events. [2022-04-18 15:49:53,804 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:49:53,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 350 events. 45/350 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1600 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2022-04-18 15:49:53,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 242 transitions, 492 flow [2022-04-18 15:49:53,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 242 transitions, 492 flow [2022-04-18 15:49:53,833 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2022-04-18 15:49:53,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:53,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:53,834 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:53,834 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:49:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1406102551, now seen corresponding path program 1 times [2022-04-18 15:49:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:53,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688081275] [2022-04-18 15:49:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:53,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:53,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:53,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688081275] [2022-04-18 15:49:53,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688081275] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:53,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:53,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810541084] [2022-04-18 15:49:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:53,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:54,021 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 242 [2022-04-18 15:49:54,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 242 transitions, 492 flow. Second operand has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:54,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 242 [2022-04-18 15:49:54,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:54,093 INFO L129 PetriNetUnfolder]: 3/300 cut-off events. [2022-04-18 15:49:54,093 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:49:54,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 300 events. 3/300 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 667 event pairs, 0 based on Foata normal form. 42/310 useless extension candidates. Maximal degree in co-relation 169. Up to 4 conditions per place. [2022-04-18 15:49:54,098 INFO L132 encePairwiseOnDemand]: 215/242 looper letters, 2 selfloop transitions, 0 changer transitions 0/211 dead transitions. [2022-04-18 15:49:54,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 211 transitions, 434 flow [2022-04-18 15:49:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 447 transitions. [2022-04-18 15:49:54,108 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9235537190082644 [2022-04-18 15:49:54,109 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 447 transitions. [2022-04-18 15:49:54,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 447 transitions. [2022-04-18 15:49:54,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:54,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 447 transitions. [2022-04-18 15:49:54,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 223.5) internal successors, (447), 2 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,125 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,126 INFO L186 Difference]: Start difference. First operand has 216 places, 242 transitions, 492 flow. Second operand 2 states and 447 transitions. [2022-04-18 15:49:54,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 211 transitions, 434 flow [2022-04-18 15:49:54,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 211 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:54,145 INFO L242 Difference]: Finished difference. Result has 213 places, 211 transitions, 430 flow [2022-04-18 15:49:54,147 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=430, PETRI_PLACES=213, PETRI_TRANSITIONS=211} [2022-04-18 15:49:54,150 INFO L335 CegarLoopForPetriNet]: 216 programPoint places, -3 predicate places. [2022-04-18 15:49:54,150 INFO L478 AbstractCegarLoop]: Abstraction has has 213 places, 211 transitions, 430 flow [2022-04-18 15:49:54,151 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,151 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:54,151 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:54,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:54,152 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:49:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2001361064, now seen corresponding path program 1 times [2022-04-18 15:49:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462419982] [2022-04-18 15:49:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462419982] [2022-04-18 15:49:54,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462419982] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:54,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:54,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936038032] [2022-04-18 15:49:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:54,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:54,228 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 242 [2022-04-18 15:49:54,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 211 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:54,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 242 [2022-04-18 15:49:54,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:54,268 INFO L129 PetriNetUnfolder]: 1/230 cut-off events. [2022-04-18 15:49:54,268 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:49:54,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 230 events. 1/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 270 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 245. Up to 7 conditions per place. [2022-04-18 15:49:54,269 INFO L132 encePairwiseOnDemand]: 239/242 looper letters, 9 selfloop transitions, 2 changer transitions 0/213 dead transitions. [2022-04-18 15:49:54,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 213 transitions, 456 flow [2022-04-18 15:49:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-04-18 15:49:54,275 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8512396694214877 [2022-04-18 15:49:54,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-04-18 15:49:54,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-04-18 15:49:54,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:54,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-04-18 15:49:54,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,282 INFO L186 Difference]: Start difference. First operand has 213 places, 211 transitions, 430 flow. Second operand 3 states and 618 transitions. [2022-04-18 15:49:54,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 213 transitions, 456 flow [2022-04-18 15:49:54,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 213 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:54,291 INFO L242 Difference]: Finished difference. Result has 216 places, 211 transitions, 438 flow [2022-04-18 15:49:54,291 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=216, PETRI_TRANSITIONS=211} [2022-04-18 15:49:54,292 INFO L335 CegarLoopForPetriNet]: 216 programPoint places, 0 predicate places. [2022-04-18 15:49:54,293 INFO L478 AbstractCegarLoop]: Abstraction has has 216 places, 211 transitions, 438 flow [2022-04-18 15:49:54,293 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,293 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:54,294 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:54,294 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:54,295 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:49:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash 247994271, now seen corresponding path program 1 times [2022-04-18 15:49:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:54,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000015527] [2022-04-18 15:49:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:54,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:54,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000015527] [2022-04-18 15:49:54,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000015527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:54,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:54,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773331300] [2022-04-18 15:49:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:54,388 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:54,390 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 242 [2022-04-18 15:49:54,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 211 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:54,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 242 [2022-04-18 15:49:54,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:54,565 INFO L129 PetriNetUnfolder]: 109/1513 cut-off events. [2022-04-18 15:49:54,565 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:49:54,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 1513 events. 109/1513 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9980 event pairs, 28 based on Foata normal form. 0/1326 useless extension candidates. Maximal degree in co-relation 1760. Up to 161 conditions per place. [2022-04-18 15:49:54,571 INFO L132 encePairwiseOnDemand]: 227/242 looper letters, 24 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2022-04-18 15:49:54,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 222 transitions, 531 flow [2022-04-18 15:49:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-04-18 15:49:54,573 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8305785123966942 [2022-04-18 15:49:54,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-04-18 15:49:54,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-04-18 15:49:54,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:54,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-04-18 15:49:54,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,578 INFO L186 Difference]: Start difference. First operand has 216 places, 211 transitions, 438 flow. Second operand 3 states and 603 transitions. [2022-04-18 15:49:54,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 222 transitions, 531 flow [2022-04-18 15:49:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:54,581 INFO L242 Difference]: Finished difference. Result has 216 places, 217 transitions, 508 flow [2022-04-18 15:49:54,581 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=216, PETRI_TRANSITIONS=217} [2022-04-18 15:49:54,582 INFO L335 CegarLoopForPetriNet]: 216 programPoint places, 0 predicate places. [2022-04-18 15:49:54,583 INFO L478 AbstractCegarLoop]: Abstraction has has 216 places, 217 transitions, 508 flow [2022-04-18 15:49:54,583 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,583 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:54,583 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:54,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:54,584 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:49:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1625609601, now seen corresponding path program 1 times [2022-04-18 15:49:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:54,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174678570] [2022-04-18 15:49:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:54,624 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:54,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:54,658 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:54,659 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 15:49:54,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 15:49:54,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 15:49:54,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 15:49:54,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 15:49:54,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 15:49:54,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 15:49:54,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 15:49:54,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 15:49:54,665 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:54,667 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 15:49:54,668 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:54,668 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:54,689 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:49:54,690 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:54,691 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:49:54,691 INFO L341 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-04-18 15:49:54,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 292 places, 329 transitions, 676 flow [2022-04-18 15:49:54,738 INFO L129 PetriNetUnfolder]: 76/576 cut-off events. [2022-04-18 15:49:54,738 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:49:54,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 576 events. 76/576 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2960 event pairs, 0 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 352. Up to 9 conditions per place. [2022-04-18 15:49:54,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 329 transitions, 676 flow [2022-04-18 15:49:54,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 329 transitions, 676 flow [2022-04-18 15:49:54,769 INFO L129 PetriNetUnfolder]: 2/63 cut-off events. [2022-04-18 15:49:54,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:54,770 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:54,770 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:54,770 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:49:54,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1497137961, now seen corresponding path program 1 times [2022-04-18 15:49:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:54,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640251070] [2022-04-18 15:49:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:54,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:54,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640251070] [2022-04-18 15:49:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640251070] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:54,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:54,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211952864] [2022-04-18 15:49:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:54,811 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:54,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:54,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:54,812 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 329 [2022-04-18 15:49:54,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 329 transitions, 676 flow. Second operand has 2 states, 2 states have (on average 282.5) internal successors, (565), 2 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:54,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 329 [2022-04-18 15:49:54,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:54,877 INFO L129 PetriNetUnfolder]: 6/494 cut-off events. [2022-04-18 15:49:54,878 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:49:54,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 494 events. 6/494 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1712 event pairs, 0 based on Foata normal form. 96/536 useless extension candidates. Maximal degree in co-relation 304. Up to 7 conditions per place. [2022-04-18 15:49:54,883 INFO L132 encePairwiseOnDemand]: 290/329 looper letters, 4 selfloop transitions, 0 changer transitions 0/286 dead transitions. [2022-04-18 15:49:54,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 286 transitions, 598 flow [2022-04-18 15:49:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 607 transitions. [2022-04-18 15:49:54,884 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9224924012158054 [2022-04-18 15:49:54,884 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 607 transitions. [2022-04-18 15:49:54,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 607 transitions. [2022-04-18 15:49:54,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:54,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 607 transitions. [2022-04-18 15:49:54,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 303.5) internal successors, (607), 2 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,887 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,887 INFO L186 Difference]: Start difference. First operand has 292 places, 329 transitions, 676 flow. Second operand 2 states and 607 transitions. [2022-04-18 15:49:54,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 286 transitions, 598 flow [2022-04-18 15:49:54,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 286 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:54,891 INFO L242 Difference]: Finished difference. Result has 289 places, 286 transitions, 590 flow [2022-04-18 15:49:54,892 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=590, PETRI_PLACES=289, PETRI_TRANSITIONS=286} [2022-04-18 15:49:54,893 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, -3 predicate places. [2022-04-18 15:49:54,893 INFO L478 AbstractCegarLoop]: Abstraction has has 289 places, 286 transitions, 590 flow [2022-04-18 15:49:54,893 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 282.5) internal successors, (565), 2 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,893 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:54,893 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:54,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:49:54,893 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:49:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash -609634280, now seen corresponding path program 1 times [2022-04-18 15:49:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:54,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727665194] [2022-04-18 15:49:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:54,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:54,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727665194] [2022-04-18 15:49:54,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727665194] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:54,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:54,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009185788] [2022-04-18 15:49:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:54,937 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:54,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:54,939 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 329 [2022-04-18 15:49:54,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 286 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:54,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:54,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 329 [2022-04-18 15:49:54,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:55,022 INFO L129 PetriNetUnfolder]: 4/424 cut-off events. [2022-04-18 15:49:55,022 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-04-18 15:49:55,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 424 events. 4/424 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1228 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 455. Up to 16 conditions per place. [2022-04-18 15:49:55,027 INFO L132 encePairwiseOnDemand]: 326/329 looper letters, 13 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2022-04-18 15:49:55,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 290 transitions, 628 flow [2022-04-18 15:49:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2022-04-18 15:49:55,029 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8520770010131712 [2022-04-18 15:49:55,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2022-04-18 15:49:55,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2022-04-18 15:49:55,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:55,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2022-04-18 15:49:55,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:55,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:55,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:55,033 INFO L186 Difference]: Start difference. First operand has 289 places, 286 transitions, 590 flow. Second operand 3 states and 841 transitions. [2022-04-18 15:49:55,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 290 transitions, 628 flow [2022-04-18 15:49:55,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 290 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:55,037 INFO L242 Difference]: Finished difference. Result has 292 places, 287 transitions, 602 flow [2022-04-18 15:49:55,038 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=292, PETRI_TRANSITIONS=287} [2022-04-18 15:49:55,041 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, 0 predicate places. [2022-04-18 15:49:55,041 INFO L478 AbstractCegarLoop]: Abstraction has has 292 places, 287 transitions, 602 flow [2022-04-18 15:49:55,041 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:55,041 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:55,042 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:55,042 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:49:55,042 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:49:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -369715436, now seen corresponding path program 1 times [2022-04-18 15:49:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:55,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443020251] [2022-04-18 15:49:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:55,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:55,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443020251] [2022-04-18 15:49:55,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443020251] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:55,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:55,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114962996] [2022-04-18 15:49:55,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:55,082 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:55,083 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 329 [2022-04-18 15:49:55,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 287 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:55,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:55,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 329 [2022-04-18 15:49:55,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:57,631 INFO L129 PetriNetUnfolder]: 3952/26724 cut-off events. [2022-04-18 15:49:57,631 INFO L130 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-04-18 15:49:57,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33261 conditions, 26724 events. 3952/26724 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 353989 event pairs, 1419 based on Foata normal form. 0/22802 useless extension candidates. Maximal degree in co-relation 33254. Up to 3958 conditions per place. [2022-04-18 15:49:57,822 INFO L132 encePairwiseOnDemand]: 304/329 looper letters, 48 selfloop transitions, 18 changer transitions 0/316 dead transitions. [2022-04-18 15:49:57,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 316 transitions, 803 flow [2022-04-18 15:49:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-04-18 15:49:57,825 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8308004052684904 [2022-04-18 15:49:57,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-04-18 15:49:57,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-04-18 15:49:57,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:57,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-04-18 15:49:57,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,830 INFO L186 Difference]: Start difference. First operand has 292 places, 287 transitions, 602 flow. Second operand 3 states and 820 transitions. [2022-04-18 15:49:57,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 316 transitions, 803 flow [2022-04-18 15:49:57,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 316 transitions, 801 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:57,836 INFO L242 Difference]: Finished difference. Result has 295 places, 305 transitions, 758 flow [2022-04-18 15:49:57,836 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=758, PETRI_PLACES=295, PETRI_TRANSITIONS=305} [2022-04-18 15:49:57,837 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, 3 predicate places. [2022-04-18 15:49:57,837 INFO L478 AbstractCegarLoop]: Abstraction has has 295 places, 305 transitions, 758 flow [2022-04-18 15:49:57,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,837 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:57,838 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:57,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:49:57,838 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:49:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -442655441, now seen corresponding path program 1 times [2022-04-18 15:49:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160260184] [2022-04-18 15:49:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:57,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160260184] [2022-04-18 15:49:57,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160260184] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:57,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:57,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121852641] [2022-04-18 15:49:57,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:57,861 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:57,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:57,862 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 329 [2022-04-18 15:49:57,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 305 transitions, 758 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:57,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:57,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 329 [2022-04-18 15:49:57,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:00,964 INFO L129 PetriNetUnfolder]: 4897/37029 cut-off events. [2022-04-18 15:50:00,964 INFO L130 PetriNetUnfolder]: For 6672/8863 co-relation queries the response was YES. [2022-04-18 15:50:01,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52492 conditions, 37029 events. 4897/37029 cut-off events. For 6672/8863 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 524377 event pairs, 2124 based on Foata normal form. 33/32850 useless extension candidates. Maximal degree in co-relation 52484. Up to 7039 conditions per place. [2022-04-18 15:50:01,177 INFO L132 encePairwiseOnDemand]: 318/329 looper letters, 76 selfloop transitions, 18 changer transitions 0/342 dead transitions. [2022-04-18 15:50:01,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 342 transitions, 1110 flow [2022-04-18 15:50:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2022-04-18 15:50:01,180 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8166160081053698 [2022-04-18 15:50:01,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2022-04-18 15:50:01,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2022-04-18 15:50:01,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:01,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2022-04-18 15:50:01,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,185 INFO L186 Difference]: Start difference. First operand has 295 places, 305 transitions, 758 flow. Second operand 3 states and 806 transitions. [2022-04-18 15:50:01,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 342 transitions, 1110 flow [2022-04-18 15:50:01,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 342 transitions, 1050 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:01,205 INFO L242 Difference]: Finished difference. Result has 297 places, 321 transitions, 888 flow [2022-04-18 15:50:01,206 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=888, PETRI_PLACES=297, PETRI_TRANSITIONS=321} [2022-04-18 15:50:01,206 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, 5 predicate places. [2022-04-18 15:50:01,207 INFO L478 AbstractCegarLoop]: Abstraction has has 297 places, 321 transitions, 888 flow [2022-04-18 15:50:01,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,208 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:01,208 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:01,208 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:50:01,208 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:50:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:01,209 INFO L85 PathProgramCache]: Analyzing trace with hash -673579030, now seen corresponding path program 1 times [2022-04-18 15:50:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:01,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9728063] [2022-04-18 15:50:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:01,233 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:01,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:01,254 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:01,254 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-04-18 15:50:01,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2022-04-18 15:50:01,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2022-04-18 15:50:01,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2022-04-18 15:50:01,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2022-04-18 15:50:01,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2022-04-18 15:50:01,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2022-04-18 15:50:01,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2022-04-18 15:50:01,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2022-04-18 15:50:01,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2022-04-18 15:50:01,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2022-04-18 15:50:01,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2022-04-18 15:50:01,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2022-04-18 15:50:01,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2022-04-18 15:50:01,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2022-04-18 15:50:01,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2022-04-18 15:50:01,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2022-04-18 15:50:01,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2022-04-18 15:50:01,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2022-04-18 15:50:01,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2022-04-18 15:50:01,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:50:01,264 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:50:01,264 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:01,264 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:50:01,304 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:50:01,306 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:01,307 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:50:01,307 INFO L341 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-04-18 15:50:01,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 368 places, 416 transitions, 862 flow [2022-04-18 15:50:01,540 INFO L129 PetriNetUnfolder]: 112/847 cut-off events. [2022-04-18 15:50:01,540 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:50:01,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 847 events. 112/847 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4580 event pairs, 1 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 584. Up to 16 conditions per place. [2022-04-18 15:50:01,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 416 transitions, 862 flow [2022-04-18 15:50:01,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 368 places, 416 transitions, 862 flow [2022-04-18 15:50:01,560 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2022-04-18 15:50:01,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:01,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:01,560 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:01,560 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2022-04-18 15:50:01,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 144912408, now seen corresponding path program 1 times [2022-04-18 15:50:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:01,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916615098] [2022-04-18 15:50:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:01,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916615098] [2022-04-18 15:50:01,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916615098] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:01,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:01,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716321860] [2022-04-18 15:50:01,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:01,587 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:01,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:01,589 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 416 [2022-04-18 15:50:01,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 416 transitions, 862 flow. Second operand has 3 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:01,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 416 [2022-04-18 15:50:01,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:01,682 INFO L129 PetriNetUnfolder]: 10/661 cut-off events. [2022-04-18 15:50:01,682 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-04-18 15:50:01,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 661 events. 10/661 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2570 event pairs, 1 based on Foata normal form. 276/867 useless extension candidates. Maximal degree in co-relation 497. Up to 30 conditions per place. [2022-04-18 15:50:01,693 INFO L132 encePairwiseOnDemand]: 362/416 looper letters, 15 selfloop transitions, 2 changer transitions 0/365 dead transitions. [2022-04-18 15:50:01,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 365 transitions, 794 flow [2022-04-18 15:50:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1126 transitions. [2022-04-18 15:50:01,696 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9022435897435898 [2022-04-18 15:50:01,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1126 transitions. [2022-04-18 15:50:01,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1126 transitions. [2022-04-18 15:50:01,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:01,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1126 transitions. [2022-04-18 15:50:01,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,702 INFO L186 Difference]: Start difference. First operand has 368 places, 416 transitions, 862 flow. Second operand 3 states and 1126 transitions. [2022-04-18 15:50:01,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 365 transitions, 794 flow [2022-04-18 15:50:01,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 365 transitions, 794 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:01,706 INFO L242 Difference]: Finished difference. Result has 367 places, 362 transitions, 764 flow [2022-04-18 15:50:01,707 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=367, PETRI_TRANSITIONS=362} [2022-04-18 15:50:01,708 INFO L335 CegarLoopForPetriNet]: 368 programPoint places, -1 predicate places. [2022-04-18 15:50:01,708 INFO L478 AbstractCegarLoop]: Abstraction has has 367 places, 362 transitions, 764 flow [2022-04-18 15:50:01,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:01,709 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:01,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:50:01,709 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2022-04-18 15:50:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 73857897, now seen corresponding path program 1 times [2022-04-18 15:50:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:01,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482660536] [2022-04-18 15:50:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:01,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482660536] [2022-04-18 15:50:01,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482660536] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:01,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:01,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657683562] [2022-04-18 15:50:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:01,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:01,742 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 416 [2022-04-18 15:50:01,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 362 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:01,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:01,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 416 [2022-04-18 15:50:01,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand