./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/01_inc.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/pthread-ext/01_inc.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 dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 --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 [2023-08-28 17:53:09,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:53:09,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:53:09,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:53:09,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:53:09,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:53:09,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:53:09,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:53:09,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:53:09,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:53:09,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:53:09,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:53:09,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:53:09,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:53:09,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:53:09,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:53:09,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:53:09,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:53:09,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:53:09,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:53:09,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:53:09,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:53:09,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:53:09,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:53:09,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:53:09,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:53:09,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:53:09,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:53:09,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:53:09,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:53:09,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:53:09,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:53:09,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:53:09,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:53:09,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:53:09,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:53:09,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:53:09,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:53:09,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:53:09,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:53:09,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:53:09,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:53:09,994 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:53:09,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:53:09,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:53:09,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:53:09,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:53:09,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:53:09,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:53:09,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:53:09,997 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:53:09,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:53:09,998 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:53:09,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:53:09,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:53:09,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:53:09,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:53:09,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:53:10,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:53:10,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:53:10,000 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:53:10,000 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:53:10,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:53:10,001 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:53:10,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:53:10,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:53:10,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:53:10,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:53:10,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:10,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:53:10,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:53:10,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:53:10,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:53:10,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:53:10,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:53:10,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:53:10,003 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:53:10,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:53:10,004 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:53:10,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc44c09c63836e77e2249e5abf8328354015a2494c028ff1b2e04f58fa741976 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:53:10,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:53:10,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:53:10,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:53:10,358 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:53:10,358 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:53:10,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01_inc.i [2023-08-28 17:53:11,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:53:11,717 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:53:11,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01_inc.i [2023-08-28 17:53:11,730 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bf1b40d/7ade6ec878474046a1d8fdbe815180fc/FLAG92d1f4d5e [2023-08-28 17:53:11,748 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bf1b40d/7ade6ec878474046a1d8fdbe815180fc [2023-08-28 17:53:11,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:53:11,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:53:11,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:11,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:53:11,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:53:11,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:11" (1/1) ... [2023-08-28 17:53:11,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9757d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:11, skipping insertion in model container [2023-08-28 17:53:11,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:11" (1/1) ... [2023-08-28 17:53:11,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:53:11,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:53:11,998 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 17:53:12,145 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01_inc.i[30915,30928] [2023-08-28 17:53:12,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:12,161 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:53:12,180 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 17:53:12,199 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01_inc.i[30915,30928] [2023-08-28 17:53:12,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:12,268 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:12,268 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:12,269 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:12,274 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:53:12,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12 WrapperNode [2023-08-28 17:53:12,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:12,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:12,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:53:12,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:53:12,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,345 INFO L138 Inliner]: procedures = 173, calls = 18, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 88 [2023-08-28 17:53:12,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:12,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:53:12,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:53:12,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:53:12,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:53:12,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:53:12,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:53:12,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:53:12,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (1/1) ... [2023-08-28 17:53:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:12,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:53:12,422 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) [2023-08-28 17:53:12,443 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 [2023-08-28 17:53:12,466 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 17:53:12,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 17:53:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:53:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-28 17:53:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:53:12,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:53:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:53:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:53:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-28 17:53:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:53:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:53:12,471 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 17:53:12,595 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:53:12,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:53:12,787 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:53:12,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:53:12,903 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-28 17:53:12,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:12 BoogieIcfgContainer [2023-08-28 17:53:12,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:53:12,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:53:12,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:53:12,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:53:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:53:11" (1/3) ... [2023-08-28 17:53:12,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31719a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:12, skipping insertion in model container [2023-08-28 17:53:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:12" (2/3) ... [2023-08-28 17:53:12,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31719a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:12, skipping insertion in model container [2023-08-28 17:53:12,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:12" (3/3) ... [2023-08-28 17:53:12,916 INFO L112 eAbstractionObserver]: Analyzing ICFG 01_inc.i [2023-08-28 17:53:12,922 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:53:12,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:53:12,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-28 17:53:12,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:53:12,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:12,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,018 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2023-08-28 17:53:13,018 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:13,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2023-08-28 17:53:13,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:13,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:13,065 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2023-08-28 17:53:13,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:13,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2023-08-28 17:53:13,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 806 [2023-08-28 17:53:15,005 INFO L134 LiptonReduction]: Checked pairs total: 842 [2023-08-28 17:53:15,005 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-28 17:53:15,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:15,024 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;@344e3c2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:15,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-28 17:53:15,027 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:53:15,027 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:15,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:15,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:15,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-28 17:53:15,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash 11344956, now seen corresponding path program 1 times [2023-08-28 17:53:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:15,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907307759] [2023-08-28 17:53:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:15,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:15,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907307759] [2023-08-28 17:53:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907307759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544809737] [2023-08-28 17:53:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:15,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 123 [2023-08-28 17:53:15,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2023-08-28 17:53:15,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:15,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 123 [2023-08-28 17:53:15,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:15,231 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-28 17:53:15,232 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:15,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-28 17:53:15,233 INFO L137 encePairwiseOnDemand]: 112/123 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-28 17:53:15,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-28 17:53:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 102 transitions. [2023-08-28 17:53:15,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2023-08-28 17:53:15,245 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 102 transitions. [2023-08-28 17:53:15,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 102 transitions. [2023-08-28 17:53:15,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:15,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 102 transitions. [2023-08-28 17:53:15,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2023-08-28 17:53:15,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2023-08-28 17:53:15,253 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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) [2023-08-28 17:53:15,255 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 39 flow. Second operand 2 states and 102 transitions. [2023-08-28 17:53:15,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-28 17:53:15,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:15,258 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-28 17:53:15,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-28 17:53:15,262 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -10 predicate places. [2023-08-28 17:53:15,262 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-28 17:53:15,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2023-08-28 17:53:15,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2023-08-28 17:53:15,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-28 17:53:15,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-28 17:53:15,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-28 17:53:15,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-28 17:53:15,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-28 17:53:15,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-28 17:53:15,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-28 17:53:15,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-28 17:53:15,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-28 17:53:15,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-28 17:53:15,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-28 17:53:15,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-28 17:53:15,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-28 17:53:15,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-28 17:53:15,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-28 17:53:15,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-28 17:53:15,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-28 17:53:15,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-28 17:53:15,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-28 17:53:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:53:15,271 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:15,274 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 (1/2) [2023-08-28 17:53:15,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,298 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2023-08-28 17:53:15,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:15,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2023-08-28 17:53:15,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,300 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:15,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2023-08-28 17:53:15,315 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2023-08-28 17:53:15,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:15,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 3/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2023-08-28 17:53:15,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 806 [2023-08-28 17:53:16,916 INFO L134 LiptonReduction]: Checked pairs total: 842 [2023-08-28 17:53:16,916 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-28 17:53:16,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:16,919 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;@344e3c2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:16,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:16,922 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-08-28 17:53:16,922 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:16,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:16,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 17:53:16,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:16,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash -31878676, now seen corresponding path program 1 times [2023-08-28 17:53:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007358201] [2023-08-28 17:53:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:16,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:16,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:16,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:16,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:16,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:53:16,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:16,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:16,974 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:16,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 17:53:16,990 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,006 INFO L130 PetriNetUnfolder]: 5/111 cut-off events. [2023-08-28 17:53:17,006 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 5/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 268 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 6 conditions per place. [2023-08-28 17:53:17,008 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:17,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 89 transitions, 190 flow [2023-08-28 17:53:17,022 INFO L130 PetriNetUnfolder]: 5/111 cut-off events. [2023-08-28 17:53:17,022 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:17,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 5/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 268 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 6 conditions per place. [2023-08-28 17:53:17,031 INFO L119 LiptonReduction]: Number of co-enabled transitions 3596 [2023-08-28 17:53:18,026 INFO L134 LiptonReduction]: Checked pairs total: 15251 [2023-08-28 17:53:18,027 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-28 17:53:18,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:18,030 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;@344e3c2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:18,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-28 17:53:18,031 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 17:53:18,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:18,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:18,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 19052546, now seen corresponding path program 1 times [2023-08-28 17:53:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976087833] [2023-08-28 17:53:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976087833] [2023-08-28 17:53:18,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976087833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:18,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:18,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852023226] [2023-08-28 17:53:18,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:18,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:18,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 145 [2023-08-28 17:53:18,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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) [2023-08-28 17:53:18,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:18,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 145 [2023-08-28 17:53:18,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:18,107 INFO L130 PetriNetUnfolder]: 86/309 cut-off events. [2023-08-28 17:53:18,107 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-28 17:53:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 309 events. 86/309 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1660 event pairs, 64 based on Foata normal form. 32/279 useless extension candidates. Maximal degree in co-relation 106. Up to 149 conditions per place. [2023-08-28 17:53:18,110 INFO L137 encePairwiseOnDemand]: 130/145 looper letters, 14 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-28 17:53:18,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 122 flow [2023-08-28 17:53:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2023-08-28 17:53:18,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-08-28 17:53:18,112 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 155 transitions. [2023-08-28 17:53:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 155 transitions. [2023-08-28 17:53:18,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:18,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 155 transitions. [2023-08-28 17:53:18,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2023-08-28 17:53:18,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-08-28 17:53:18,116 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-08-28 17:53:18,116 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 124 flow. Second operand 2 states and 155 transitions. [2023-08-28 17:53:18,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 122 flow [2023-08-28 17:53:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 120 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:18,118 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 92 flow [2023-08-28 17:53:18,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-28 17:53:18,119 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -14 predicate places. [2023-08-28 17:53:18,119 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 92 flow [2023-08-28 17:53:18,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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) [2023-08-28 17:53:18,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:18,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:53:18,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1129641761, now seen corresponding path program 1 times [2023-08-28 17:53:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396423308] [2023-08-28 17:53:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:18,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:18,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396423308] [2023-08-28 17:53:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396423308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:18,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468367868] [2023-08-28 17:53:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:18,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 145 [2023-08-28 17:53:18,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-08-28 17:53:18,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:18,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 145 [2023-08-28 17:53:18,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:18,319 INFO L130 PetriNetUnfolder]: 375/815 cut-off events. [2023-08-28 17:53:18,320 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-28 17:53:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 815 events. 375/815 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4871 event pairs, 125 based on Foata normal form. 0/729 useless extension candidates. Maximal degree in co-relation 1491. Up to 444 conditions per place. [2023-08-28 17:53:18,328 INFO L137 encePairwiseOnDemand]: 129/145 looper letters, 36 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2023-08-28 17:53:18,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 235 flow [2023-08-28 17:53:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-28 17:53:18,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574712643678161 [2023-08-28 17:53:18,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-28 17:53:18,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-28 17:53:18,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:18,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-28 17:53:18,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2023-08-28 17:53:18,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,343 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 92 flow. Second operand 3 states and 199 transitions. [2023-08-28 17:53:18,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 235 flow [2023-08-28 17:53:18,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 235 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:18,346 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 196 flow [2023-08-28 17:53:18,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-28 17:53:18,348 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-08-28 17:53:18,348 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 196 flow [2023-08-28 17:53:18,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2023-08-28 17:53:18,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:18,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:53:18,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,352 INFO L85 PathProgramCache]: Analyzing trace with hash -622608795, now seen corresponding path program 1 times [2023-08-28 17:53:18,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374457316] [2023-08-28 17:53:18,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 17:53:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374457316] [2023-08-28 17:53:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374457316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922135438] [2023-08-28 17:53:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:18,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:18,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:18,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-08-28 17:53:18,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2023-08-28 17:53:18,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:18,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-08-28 17:53:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:18,550 INFO L130 PetriNetUnfolder]: 395/875 cut-off events. [2023-08-28 17:53:18,551 INFO L131 PetriNetUnfolder]: For 318/325 co-relation queries the response was YES. [2023-08-28 17:53:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 875 events. 395/875 cut-off events. For 318/325 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5275 event pairs, 185 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 2010. Up to 512 conditions per place. [2023-08-28 17:53:18,556 INFO L137 encePairwiseOnDemand]: 137/145 looper letters, 32 selfloop transitions, 10 changer transitions 1/67 dead transitions. [2023-08-28 17:53:18,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 335 flow [2023-08-28 17:53:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-28 17:53:18,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436781609195402 [2023-08-28 17:53:18,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-28 17:53:18,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-28 17:53:18,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:18,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-28 17:53:18,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-08-28 17:53:18,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,562 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 196 flow. Second operand 3 states and 193 transitions. [2023-08-28 17:53:18,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 335 flow [2023-08-28 17:53:18,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:18,567 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2023-08-28 17:53:18,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2023-08-28 17:53:18,568 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2023-08-28 17:53:18,568 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2023-08-28 17:53:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2023-08-28 17:53:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:18,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:53:18,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1621397348, now seen corresponding path program 1 times [2023-08-28 17:53:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095642278] [2023-08-28 17:53:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 17:53:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095642278] [2023-08-28 17:53:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095642278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:18,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:18,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470971371] [2023-08-28 17:53:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:18,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:18,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:18,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-08-28 17:53:18,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2023-08-28 17:53:18,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:18,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-08-28 17:53:18,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:18,747 INFO L130 PetriNetUnfolder]: 444/955 cut-off events. [2023-08-28 17:53:18,747 INFO L131 PetriNetUnfolder]: For 651/687 co-relation queries the response was YES. [2023-08-28 17:53:18,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 955 events. 444/955 cut-off events. For 651/687 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5738 event pairs, 188 based on Foata normal form. 10/857 useless extension candidates. Maximal degree in co-relation 2427. Up to 584 conditions per place. [2023-08-28 17:53:18,752 INFO L137 encePairwiseOnDemand]: 137/145 looper letters, 35 selfloop transitions, 12 changer transitions 2/74 dead transitions. [2023-08-28 17:53:18,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 408 flow [2023-08-28 17:53:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-28 17:53:18,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43908045977011495 [2023-08-28 17:53:18,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-28 17:53:18,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-28 17:53:18,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:18,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-28 17:53:18,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2023-08-28 17:53:18,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,757 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 191 transitions. [2023-08-28 17:53:18,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 408 flow [2023-08-28 17:53:18,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:18,764 INFO L231 Difference]: Finished difference. Result has 53 places, 68 transitions, 332 flow [2023-08-28 17:53:18,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=53, PETRI_TRANSITIONS=68} [2023-08-28 17:53:18,765 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-08-28 17:53:18,765 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 68 transitions, 332 flow [2023-08-28 17:53:18,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2023-08-28 17:53:18,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:18,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:53:18,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1714089159, now seen corresponding path program 1 times [2023-08-28 17:53:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528223167] [2023-08-28 17:53:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528223167] [2023-08-28 17:53:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528223167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:18,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:53:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917670639] [2023-08-28 17:53:18,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:18,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:18,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 145 [2023-08-28 17:53:18,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 68 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-08-28 17:53:18,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:18,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 145 [2023-08-28 17:53:18,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:18,968 INFO L130 PetriNetUnfolder]: 74/285 cut-off events. [2023-08-28 17:53:18,969 INFO L131 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2023-08-28 17:53:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 285 events. 74/285 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1305 event pairs, 16 based on Foata normal form. 8/276 useless extension candidates. Maximal degree in co-relation 693. Up to 92 conditions per place. [2023-08-28 17:53:18,970 INFO L137 encePairwiseOnDemand]: 139/145 looper letters, 10 selfloop transitions, 4 changer transitions 12/51 dead transitions. [2023-08-28 17:53:18,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 261 flow [2023-08-28 17:53:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-08-28 17:53:18,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735632183908046 [2023-08-28 17:53:18,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-08-28 17:53:18,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-08-28 17:53:18,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:18,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-08-28 17:53:18,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2023-08-28 17:53:18,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-08-28 17:53:18,979 INFO L175 Difference]: Start difference. First operand has 53 places, 68 transitions, 332 flow. Second operand 3 states and 206 transitions. [2023-08-28 17:53:18,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 261 flow [2023-08-28 17:53:18,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 235 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:18,982 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 134 flow [2023-08-28 17:53:18,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-28 17:53:18,983 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-08-28 17:53:18,983 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 134 flow [2023-08-28 17:53:18,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-08-28 17:53:18,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:18,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:53:18,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:18,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 448499910, now seen corresponding path program 1 times [2023-08-28 17:53:18,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:18,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948033809] [2023-08-28 17:53:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:19,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:19,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:19,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:19,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 30 remaining) [2023-08-28 17:53:19,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-08-28 17:53:19,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-08-28 17:53:19,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-08-28 17:53:19,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-08-28 17:53:19,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-08-28 17:53:19,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-08-28 17:53:19,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-08-28 17:53:19,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-08-28 17:53:19,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-08-28 17:53:19,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-08-28 17:53:19,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-08-28 17:53:19,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-08-28 17:53:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-08-28 17:53:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-08-28 17:53:19,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-08-28 17:53:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-08-28 17:53:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-08-28 17:53:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-08-28 17:53:19,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-08-28 17:53:19,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-08-28 17:53:19,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-08-28 17:53:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-08-28 17:53:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-08-28 17:53:19,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-08-28 17:53:19,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-08-28 17:53:19,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-08-28 17:53:19,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-08-28 17:53:19,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-08-28 17:53:19,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-08-28 17:53:19,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:53:19,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:19,067 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-28 17:53:19,069 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-28 17:53:19,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-28 17:53:19,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 05:53:19 BasicIcfg [2023-08-28 17:53:19,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-28 17:53:19,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-28 17:53:19,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-28 17:53:19,134 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-28 17:53:19,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:12" (3/4) ... [2023-08-28 17:53:19,137 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-28 17:53:19,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-28 17:53:19,138 INFO L158 Benchmark]: Toolchain (without parser) took 7385.37ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 54.5MB in the beginning and 97.6MB in the end (delta: -43.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-08-28 17:53:19,138 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-28 17:53:19,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.08ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 54.9MB in the end (delta: -355.3kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-08-28 17:53:19,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.89ms. Allocated memory is still 77.6MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-28 17:53:19,139 INFO L158 Benchmark]: Boogie Preprocessor took 43.29ms. Allocated memory is still 77.6MB. Free memory was 52.8MB in the beginning and 51.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-28 17:53:19,139 INFO L158 Benchmark]: RCFGBuilder took 519.57ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 56.1MB in the end (delta: -4.7MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-08-28 17:53:19,140 INFO L158 Benchmark]: TraceAbstraction took 6222.42ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 55.3MB in the beginning and 97.6MB in the end (delta: -42.3MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-08-28 17:53:19,140 INFO L158 Benchmark]: Witness Printer took 3.28ms. Allocated memory is still 136.3MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-28 17:53:19,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.08ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 54.9MB in the end (delta: -355.3kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.89ms. Allocated memory is still 77.6MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.29ms. Allocated memory is still 77.6MB. Free memory was 52.8MB in the beginning and 51.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 519.57ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 56.1MB in the end (delta: -4.7MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6222.42ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 55.3MB in the beginning and 97.6MB in the end (delta: -42.3MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 3.28ms. Allocated memory is still 136.3MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 58 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 17 TransitionsAfterwards, 806 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 842, independent: 842, independent conditional: 0, independent unconditional: 842, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 396, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 842, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 396, unknown conditional: 0, unknown unconditional: 396] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 58 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 17 TransitionsAfterwards, 806 CoEnabledTransitionPairs, 6 FixpointIterations, 11 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 842 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 842, independent: 842, independent conditional: 0, independent unconditional: 842, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 396, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 842, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 396, unknown conditional: 0, unknown unconditional: 396] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 91 PlacesBefore, 59 PlacesAfterwards, 89 TransitionsBefore, 56 TransitionsAfterwards, 3596 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 15251 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5218, independent: 4846, independent conditional: 0, independent unconditional: 4846, dependent: 372, dependent conditional: 0, dependent unconditional: 372, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1697, independent: 1617, independent conditional: 0, independent unconditional: 1617, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5218, independent: 3229, independent conditional: 0, independent unconditional: 3229, dependent: 292, dependent conditional: 0, dependent unconditional: 292, unknown: 1697, unknown conditional: 0, unknown unconditional: 1697] , Statistics on independence cache: Total cache size (in pairs): 375, Positive cache size: 325, Positive conditional cache size: 0, Positive unconditional cache size: 325, Negative cache size: 50, Negative conditional cache size: 0, Negative unconditional cache size: 50, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 723]: Data race detected Data race detected The following path leads to a data race: [L704] 0 volatile unsigned value, m = 0; [L732] 0 pthread_t t; VAL [m=0, t={3:0}, value=0] [L733] COND TRUE 0 1 [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m=0, pthread_create(&t, 0, thr1, 0)=-2, t={3:0}, value=0] [L733] COND TRUE 0 1 [L716] 1 unsigned v = 0; [L717] CALL 1 __VERIFIER_atomic_acquire() [L707] EXPR 1 m==0 [L707] CALL 1 assume_abort_if_not(m==0) [L3] COND FALSE 1 !(!cond) [L707] RET 1 assume_abort_if_not(m==0) [L708] 1 m = 1 [L717] RET 1 __VERIFIER_atomic_acquire() [L718] 1 value == 0u-1 VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=0] [L718] COND FALSE 1 !(value == 0u-1) VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=0] [L722] 1 v = value VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=0] [L723] 1 value = v + 1 [L724] CALL 1 __VERIFIER_atomic_release() [L712] EXPR 1 m==1 [L712] CALL 1 assume_abort_if_not(m==1) [L3] COND FALSE 1 !(!cond) [L712] RET 1 assume_abort_if_not(m==1) [L713] 1 m = 0 [L724] RET 1 __VERIFIER_atomic_release() [L733] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m=0, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}, value=1] [L716] 2 unsigned v = 0; [L717] CALL 2 __VERIFIER_atomic_acquire() [L707] EXPR 2 m==0 [L707] CALL 2 assume_abort_if_not(m==0) [L3] COND FALSE 2 !(!cond) [L707] RET 2 assume_abort_if_not(m==0) [L708] 2 m = 1 [L717] RET 2 __VERIFIER_atomic_acquire() [L718] 2 value == 0u-1 VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=1] [L718] COND FALSE 2 !(value == 0u-1) VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=1] [L722] 2 v = value VAL [arg={0:0}, arg={0:0}, m=1, v=0, value=1] [L723] 2 value = v + 1 VAL [arg={0:0}, arg={0:0}, m=1, v=0, value = v + 1=50, value=2] [L726] EXPR 1 value > v [L726] COND FALSE 1 !(!(value > v)) [L728] 1 return 0; [L723] 2 value = v + 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, m=1, v=0, value = v + 1=50, value=2] Now there is a data race on ~value~0 between C: value > v [726] and C: value = v + 1 [723] - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 118 locations, 31 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 30 mSDtfsCounter, 233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 87 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-28 17:53:19,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE