./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:40:48,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:40:48,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:40:48,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:40:48,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:40:48,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:40:48,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:40:48,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:40:48,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:40:48,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:40:48,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:40:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:40:48,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:40:48,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:40:48,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:40:48,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:40:48,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:40:48,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:40:48,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:40:48,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:40:48,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:40:48,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:40:48,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:40:48,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:40:48,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:40:48,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:40:48,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:40:48,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:40:48,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:40:48,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:40:48,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:40:48,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:40:48,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:40:48,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:40:48,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:40:48,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:40:48,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:40:48,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:40:48,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:40:48,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:40:48,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:40:48,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:40:48,154 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:40:48,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:40:48,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:40:48,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:40:48,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:40:48,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:40:48,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:40:48,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:40:48,157 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:40:48,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:40:48,157 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:40:48,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:40:48,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:40:48,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:40:48,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:40:48,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:40:48,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:40:48,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:40:48,159 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:40:48,159 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:40:48,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:40:48,159 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:40:48,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:40:48,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:40:48,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:40:48,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:40:48,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:40:48,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:40:48,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:40:48,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:40:48,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:40:48,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:40:48,162 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:40:48,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:40:48,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:40:48,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:40:48,465 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:40:48,465 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:40:48,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-29 02:40:49,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:40:49,809 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:40:49,810 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-08-29 02:40:49,825 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b106c6bf/c8fa9ce5f80d4bdea58e9a06766390db/FLAG466076ce1 [2023-08-29 02:40:49,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b106c6bf/c8fa9ce5f80d4bdea58e9a06766390db [2023-08-29 02:40:49,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:40:49,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:40:49,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:40:49,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:40:49,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:40:49,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:40:49" (1/1) ... [2023-08-29 02:40:49,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd3004c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:49, skipping insertion in model container [2023-08-29 02:40:49,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:40:49" (1/1) ... [2023-08-29 02:40:49,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:40:49,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:40:50,127 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-08-29 02:40:50,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:40:50,174 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:40:50,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-08-29 02:40:50,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:40:50,285 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:40:50,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50 WrapperNode [2023-08-29 02:40:50,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:40:50,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:40:50,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:40:50,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:40:50,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,356 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 240 [2023-08-29 02:40:50,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:40:50,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:40:50,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:40:50,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:40:50,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,411 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:40:50,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:40:50,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:40:50,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:40:50,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (1/1) ... [2023-08-29 02:40:50,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:40:50,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:40:50,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 02:40:50,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 02:40:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:40:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 02:40:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 02:40:50,510 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 02:40:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:40:50,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:40:50,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:40:50,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:40:50,512 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:40:50,694 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:40:50,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:40:51,067 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:40:51,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:40:51,079 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-29 02:40:51,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:40:51 BoogieIcfgContainer [2023-08-29 02:40:51,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:40:51,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:40:51,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:40:51,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:40:51,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:40:49" (1/3) ... [2023-08-29 02:40:51,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f97e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:40:51, skipping insertion in model container [2023-08-29 02:40:51,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:40:50" (2/3) ... [2023-08-29 02:40:51,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f97e3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:40:51, skipping insertion in model container [2023-08-29 02:40:51,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:40:51" (3/3) ... [2023-08-29 02:40:51,112 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-08-29 02:40:51,119 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:40:51,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:40:51,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:40:51,130 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:40:51,235 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 02:40:51,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,448 INFO L130 PetriNetUnfolder]: 58/460 cut-off events. [2023-08-29 02:40:51,448 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:51,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 460 events. 58/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2206 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:51,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:40:51,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,494 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:40:51,567 INFO L130 PetriNetUnfolder]: 58/460 cut-off events. [2023-08-29 02:40:51,568 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:40:51,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 460 events. 58/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2206 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:40:51,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 27216 [2023-08-29 02:40:55,666 INFO L134 LiptonReduction]: Checked pairs total: 73667 [2023-08-29 02:40:55,667 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-29 02:40:55,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:40:55,685 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60c3c0ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:40:55,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:40:55,688 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-29 02:40:55,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:40:55,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:55,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 02:40:55,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:55,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash 29553240, now seen corresponding path program 1 times [2023-08-29 02:40:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883844273] [2023-08-29 02:40:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883844273] [2023-08-29 02:40:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883844273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:55,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:55,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054219079] [2023-08-29 02:40:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:55,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:55,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:55,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 412 [2023-08-29 02:40:55,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:55,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:55,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 412 [2023-08-29 02:40:55,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:56,765 INFO L130 PetriNetUnfolder]: 4188/8655 cut-off events. [2023-08-29 02:40:56,765 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-29 02:40:56,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15055 conditions, 8655 events. 4188/8655 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 69192 event pairs, 3441 based on Foata normal form. 960/7972 useless extension candidates. Maximal degree in co-relation 14440. Up to 6265 conditions per place. [2023-08-29 02:40:56,813 INFO L137 encePairwiseOnDemand]: 387/412 looper letters, 63 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-29 02:40:56,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 358 flow [2023-08-29 02:40:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-29 02:40:56,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889967637540453 [2023-08-29 02:40:56,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-29 02:40:56,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-29 02:40:56,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:56,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-29 02:40:56,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:56,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:56,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:56,843 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 240 flow. Second operand 3 states and 728 transitions. [2023-08-29 02:40:56,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 358 flow [2023-08-29 02:40:56,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:40:56,851 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 204 flow [2023-08-29 02:40:56,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-08-29 02:40:56,855 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2023-08-29 02:40:56,855 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 204 flow [2023-08-29 02:40:56,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:56,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:56,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:40:56,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:56,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash -787701432, now seen corresponding path program 1 times [2023-08-29 02:40:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435935492] [2023-08-29 02:40:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435935492] [2023-08-29 02:40:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435935492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741617538] [2023-08-29 02:40:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:56,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:56,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:56,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 412 [2023-08-29 02:40:56,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:56,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:56,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 412 [2023-08-29 02:40:56,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:40:58,540 INFO L130 PetriNetUnfolder]: 10995/19497 cut-off events. [2023-08-29 02:40:58,540 INFO L131 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2023-08-29 02:40:58,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37191 conditions, 19497 events. 10995/19497 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 145486 event pairs, 4561 based on Foata normal form. 0/16306 useless extension candidates. Maximal degree in co-relation 37032. Up to 9378 conditions per place. [2023-08-29 02:40:58,625 INFO L137 encePairwiseOnDemand]: 390/412 looper letters, 110 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2023-08-29 02:40:58,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 594 flow [2023-08-29 02:40:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:40:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:40:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-08-29 02:40:58,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728155339805825 [2023-08-29 02:40:58,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-08-29 02:40:58,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-08-29 02:40:58,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:40:58,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-08-29 02:40:58,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:58,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:58,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:58,634 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 204 flow. Second operand 3 states and 708 transitions. [2023-08-29 02:40:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 594 flow [2023-08-29 02:40:58,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:40:58,644 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 340 flow [2023-08-29 02:40:58,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-08-29 02:40:58,645 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-29 02:40:58,645 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 340 flow [2023-08-29 02:40:58,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:58,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:40:58,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:40:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:40:58,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:40:58,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:40:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1819148, now seen corresponding path program 1 times [2023-08-29 02:40:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:40:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141343394] [2023-08-29 02:40:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:40:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:40:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:40:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:40:58,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:40:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141343394] [2023-08-29 02:40:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141343394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:40:58,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:40:58,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:40:58,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153883604] [2023-08-29 02:40:58,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:40:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:40:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:40:58,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:40:58,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:40:58,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 412 [2023-08-29 02:40:58,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:40:58,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:40:58,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 412 [2023-08-29 02:40:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:41:00,031 INFO L130 PetriNetUnfolder]: 9270/17454 cut-off events. [2023-08-29 02:41:00,033 INFO L131 PetriNetUnfolder]: For 4355/4355 co-relation queries the response was YES. [2023-08-29 02:41:00,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37445 conditions, 17454 events. 9270/17454 cut-off events. For 4355/4355 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 138859 event pairs, 6910 based on Foata normal form. 0/14624 useless extension candidates. Maximal degree in co-relation 35908. Up to 13017 conditions per place. [2023-08-29 02:41:00,133 INFO L137 encePairwiseOnDemand]: 403/412 looper letters, 92 selfloop transitions, 11 changer transitions 0/140 dead transitions. [2023-08-29 02:41:00,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 656 flow [2023-08-29 02:41:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:41:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:41:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-29 02:41:00,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574433656957929 [2023-08-29 02:41:00,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-29 02:41:00,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-29 02:41:00,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:41:00,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-29 02:41:00,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:00,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:00,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:00,142 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 340 flow. Second operand 3 states and 689 transitions. [2023-08-29 02:41:00,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 140 transitions, 656 flow [2023-08-29 02:41:00,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:41:00,160 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 404 flow [2023-08-29 02:41:00,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2023-08-29 02:41:00,161 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-08-29 02:41:00,161 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 404 flow [2023-08-29 02:41:00,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:00,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:41:00,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:41:00,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:41:00,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:41:00,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:41:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2058262154, now seen corresponding path program 1 times [2023-08-29 02:41:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:41:00,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986449663] [2023-08-29 02:41:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:41:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:00,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:41:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986449663] [2023-08-29 02:41:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986449663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:41:00,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777603076] [2023-08-29 02:41:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:00,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:41:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:41:00,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:41:00,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:41:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:00,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:41:00,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:41:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:41:00,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:41:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777603076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:41:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:41:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:41:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817530011] [2023-08-29 02:41:00,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:41:00,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:41:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:41:00,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:41:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:41:00,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 412 [2023-08-29 02:41:00,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:00,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:41:00,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 412 [2023-08-29 02:41:00,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:41:01,691 INFO L130 PetriNetUnfolder]: 9539/17853 cut-off events. [2023-08-29 02:41:01,692 INFO L131 PetriNetUnfolder]: For 5671/5773 co-relation queries the response was YES. [2023-08-29 02:41:01,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39487 conditions, 17853 events. 9539/17853 cut-off events. For 5671/5773 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 141369 event pairs, 7286 based on Foata normal form. 0/14853 useless extension candidates. Maximal degree in co-relation 37956. Up to 14152 conditions per place. [2023-08-29 02:41:01,792 INFO L137 encePairwiseOnDemand]: 404/412 looper letters, 96 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2023-08-29 02:41:01,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 145 transitions, 724 flow [2023-08-29 02:41:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:41:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:41:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-08-29 02:41:01,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533980582524272 [2023-08-29 02:41:01,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-08-29 02:41:01,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-08-29 02:41:01,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:41:01,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-08-29 02:41:01,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:01,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:01,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:01,800 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 404 flow. Second operand 3 states and 684 transitions. [2023-08-29 02:41:01,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 145 transitions, 724 flow [2023-08-29 02:41:01,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 145 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:41:01,829 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 470 flow [2023-08-29 02:41:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2023-08-29 02:41:01,830 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2023-08-29 02:41:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 470 flow [2023-08-29 02:41:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:41:01,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:41:01,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 02:41:02,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:41:02,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:41:02,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:41:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1322644366, now seen corresponding path program 1 times [2023-08-29 02:41:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:41:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136177971] [2023-08-29 02:41:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:41:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:41:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136177971] [2023-08-29 02:41:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136177971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:41:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960169755] [2023-08-29 02:41:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:02,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:41:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:41:02,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:41:02,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:41:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:41:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:41:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:02,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:41:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960169755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:41:02,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:41:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:41:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793781485] [2023-08-29 02:41:02,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:41:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:41:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:41:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:41:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:41:02,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 412 [2023-08-29 02:41:02,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:41:02,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 412 [2023-08-29 02:41:02,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:41:02,324 INFO L130 PetriNetUnfolder]: 32/119 cut-off events. [2023-08-29 02:41:02,324 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-29 02:41:02,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 119 events. 32/119 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 297 event pairs, 11 based on Foata normal form. 17/132 useless extension candidates. Maximal degree in co-relation 272. Up to 66 conditions per place. [2023-08-29 02:41:02,325 INFO L137 encePairwiseOnDemand]: 409/412 looper letters, 19 selfloop transitions, 2 changer transitions 17/49 dead transitions. [2023-08-29 02:41:02,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 221 flow [2023-08-29 02:41:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:41:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:41:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 872 transitions. [2023-08-29 02:41:02,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529126213592233 [2023-08-29 02:41:02,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 872 transitions. [2023-08-29 02:41:02,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 872 transitions. [2023-08-29 02:41:02,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:41:02,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 872 transitions. [2023-08-29 02:41:02,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,478 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,478 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 470 flow. Second operand 4 states and 872 transitions. [2023-08-29 02:41:02,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 221 flow [2023-08-29 02:41:02,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 173 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-29 02:41:02,480 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 55 flow [2023-08-29 02:41:02,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2023-08-29 02:41:02,481 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -48 predicate places. [2023-08-29 02:41:02,481 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 55 flow [2023-08-29 02:41:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:41:02,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:41:02,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:41:02,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:41:02,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr3ASSERT_VIOLATIONDATA_RACE === [t1_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:41:02,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:41:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -78904684, now seen corresponding path program 1 times [2023-08-29 02:41:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:41:02,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788784527] [2023-08-29 02:41:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:41:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:02,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:41:02,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788784527] [2023-08-29 02:41:02,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788784527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:41:02,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:41:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:41:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859670767] [2023-08-29 02:41:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:41:02,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:41:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:41:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:41:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:41:02,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 412 [2023-08-29 02:41:02,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:41:02,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 412 [2023-08-29 02:41:02,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:41:02,802 INFO L130 PetriNetUnfolder]: 22/79 cut-off events. [2023-08-29 02:41:02,803 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 02:41:02,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 79 events. 22/79 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 20 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 155. Up to 56 conditions per place. [2023-08-29 02:41:02,804 INFO L137 encePairwiseOnDemand]: 410/412 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-29 02:41:02,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 93 flow [2023-08-29 02:41:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:41:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:41:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2023-08-29 02:41:02,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975728155339806 [2023-08-29 02:41:02,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2023-08-29 02:41:02,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2023-08-29 02:41:02,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:41:02,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2023-08-29 02:41:02,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,819 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 55 flow. Second operand 3 states and 615 transitions. [2023-08-29 02:41:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 93 flow [2023-08-29 02:41:02,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:41:02,820 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-29 02:41:02,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-29 02:41:02,822 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -58 predicate places. [2023-08-29 02:41:02,823 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-29 02:41:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:02,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:41:02,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:41:02,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:41:02,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:41:02,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:41:02,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:41:02,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:41:02,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:41:02,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:41:02,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:41:02,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:41:02,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:41:02,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:41:02,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:41:02,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:41:02,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:41:02,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:41:02,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:41:02,834 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:41:02,839 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:41:02,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,896 INFO L130 PetriNetUnfolder]: 58/460 cut-off events. [2023-08-29 02:41:02,896 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:41:02,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 460 events. 58/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2206 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:41:02,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,903 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:41:02,903 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,903 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 518 flow [2023-08-29 02:41:02,945 INFO L130 PetriNetUnfolder]: 58/460 cut-off events. [2023-08-29 02:41:02,945 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:41:02,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 460 events. 58/460 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2206 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-29 02:41:02,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 27216 [2023-08-29 02:41:06,486 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-29 02:41:06,486 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-29 02:41:06,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:41:06,488 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60c3c0ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:41:06,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-29 02:41:06,494 INFO L130 PetriNetUnfolder]: 3/28 cut-off events. [2023-08-29 02:41:06,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:41:06,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:41:06,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:41:06,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:41:06,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:41:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1120638670, now seen corresponding path program 1 times [2023-08-29 02:41:06,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:41:06,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218144693] [2023-08-29 02:41:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:41:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:41:06,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:41:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:41:06,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:41:06,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:41:06,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-29 02:41:06,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-29 02:41:06,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:41:06,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:41:06,541 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-29 02:41:06,542 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:41:06,542 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:41:06,597 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 02:41:06,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:06,890 INFO L130 PetriNetUnfolder]: 197/1382 cut-off events. [2023-08-29 02:41:06,890 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:41:06,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 1382 events. 197/1382 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8969 event pairs, 1 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 833. Up to 32 conditions per place. [2023-08-29 02:41:06,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:06,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:06,921 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:41:06,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:06,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:06,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 398 transitions, 844 flow [2023-08-29 02:41:07,126 INFO L130 PetriNetUnfolder]: 197/1382 cut-off events. [2023-08-29 02:41:07,126 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:41:07,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 1382 events. 197/1382 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8969 event pairs, 1 based on Foata normal form. 0/1126 useless extension candidates. Maximal degree in co-relation 833. Up to 32 conditions per place. [2023-08-29 02:41:07,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 98784 [2023-08-29 02:41:11,047 INFO L134 LiptonReduction]: Checked pairs total: 315619 [2023-08-29 02:41:11,047 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-29 02:41:11,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:41:11,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60c3c0ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:41:11,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 02:41:11,051 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 02:41:11,051 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:41:11,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:41:11,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 02:41:11,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 02:41:11,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:41:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash 58554013, now seen corresponding path program 1 times [2023-08-29 02:41:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:41:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2627149] [2023-08-29 02:41:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:41:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:41:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:41:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:41:11,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:41:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2627149] [2023-08-29 02:41:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2627149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:41:11,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:41:11,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:41:11,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563425568] [2023-08-29 02:41:11,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:41:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:41:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:41:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:41:11,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:41:11,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 630 [2023-08-29 02:41:11,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 210 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:41:11,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:41:11,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 630 [2023-08-29 02:41:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand