./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.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 dfa09ef2a9611ca17b7987ae6667bf9c5dfecc9a3d2f86327d9d054dda20e42c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:44:18,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:44:18,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:44:18,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:44:18,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:44:18,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:44:18,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:44:18,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:44:18,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:44:18,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:44:18,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:44:18,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:44:18,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:44:18,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:44:18,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:44:18,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:44:18,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:44:18,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:44:18,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:44:18,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:44:18,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:44:18,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:44:18,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:44:18,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:44:18,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:44:18,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:44:18,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:44:18,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:44:18,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:44:18,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:44:18,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:44:18,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:44:18,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:44:18,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:44:18,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:44:18,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:44:18,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:44:18,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:44:18,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:44:18,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:44:18,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:44:18,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:44:18,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:44:18,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:44:18,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:44:18,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:44:18,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:44:18,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:44:18,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:44:18,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:44:18,987 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:44:18,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:44:18,988 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:44:18,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:44:18,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:44:18,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:44:18,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:44:18,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:44:18,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:44:18,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:44:18,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:44:18,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:44:18,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:44:18,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:44:18,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:44:18,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:44:18,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:44:18,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:44:18,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:44:18,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:44:18,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:44:18,993 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:44:18,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:44:18,993 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:44:18,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa09ef2a9611ca17b7987ae6667bf9c5dfecc9a3d2f86327d9d054dda20e42c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:44:19,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:44:19,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:44:19,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:44:19,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:44:19,313 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:44:19,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-08-29 18:44:20,464 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:44:20,747 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:44:20,747 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-08-29 18:44:20,763 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3f24c8f/09477cc4e94f4b7dad8ec11bb0036a5b/FLAG057539c5e [2023-08-29 18:44:20,783 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3f24c8f/09477cc4e94f4b7dad8ec11bb0036a5b [2023-08-29 18:44:20,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:44:20,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:44:20,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:44:20,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:44:20,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:44:20,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:44:20" (1/1) ... [2023-08-29 18:44:20,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b859280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:20, skipping insertion in model container [2023-08-29 18:44:20,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:44:20" (1/1) ... [2023-08-29 18:44:20,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:44:20,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:44:21,021 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2023-08-29 18:44:21,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:44:21,193 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:44:21,206 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_pos.i[1098,1111] [2023-08-29 18:44:21,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:44:21,263 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:44:21,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21 WrapperNode [2023-08-29 18:44:21,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:44:21,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:44:21,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:44:21,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:44:21,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,312 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-29 18:44:21,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:44:21,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:44:21,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:44:21,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:44:21,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:44:21,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:44:21,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:44:21,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:44:21,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (1/1) ... [2023-08-29 18:44:21,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:44:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:44:21,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:44:21,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:44:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:44:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:44:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:44:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:44:21,404 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:44:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:44:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:44:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:44:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:44:21,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:44:21,406 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:44:21,534 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:44:21,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:44:21,733 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:44:21,739 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:44:21,740 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 18:44:21,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:44:21 BoogieIcfgContainer [2023-08-29 18:44:21,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:44:21,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:44:21,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:44:21,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:44:21,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:44:20" (1/3) ... [2023-08-29 18:44:21,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7efe54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:44:21, skipping insertion in model container [2023-08-29 18:44:21,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:44:21" (2/3) ... [2023-08-29 18:44:21,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7efe54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:44:21, skipping insertion in model container [2023-08-29 18:44:21,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:44:21" (3/3) ... [2023-08-29 18:44:21,750 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_pos.i [2023-08-29 18:44:21,757 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:44:21,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:44:21,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-29 18:44:21,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:44:21,827 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 18:44:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 175 flow [2023-08-29 18:44:21,894 INFO L130 PetriNetUnfolder]: 2/84 cut-off events. [2023-08-29 18:44:21,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:44:21,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-29 18:44:21,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 85 transitions, 175 flow [2023-08-29 18:44:21,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 84 transitions, 171 flow [2023-08-29 18:44:21,904 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:44:21,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 84 transitions, 171 flow [2023-08-29 18:44:21,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 84 transitions, 171 flow [2023-08-29 18:44:21,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 171 flow [2023-08-29 18:44:21,962 INFO L130 PetriNetUnfolder]: 2/84 cut-off events. [2023-08-29 18:44:21,962 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:44:21,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 84 events. 2/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-29 18:44:21,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 1050 [2023-08-29 18:44:24,350 INFO L134 LiptonReduction]: Checked pairs total: 3662 [2023-08-29 18:44:24,351 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-29 18:44:24,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:44:24,368 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;@67713cd8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:44:24,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 18:44:24,371 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-29 18:44:24,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:44:24,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:44:24,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:44:24,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 18:44:24,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:44:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -128688435, now seen corresponding path program 1 times [2023-08-29 18:44:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:44:24,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123795900] [2023-08-29 18:44:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:44:24,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:44:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:44:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:44:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:44:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123795900] [2023-08-29 18:44:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123795900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:44:24,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:44:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:44:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944670299] [2023-08-29 18:44:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:44:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:44:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:44:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:44:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:44:24,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 148 [2023-08-29 18:44:24,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:24,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:44:24,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 148 [2023-08-29 18:44:24,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:44:24,813 INFO L130 PetriNetUnfolder]: 77/212 cut-off events. [2023-08-29 18:44:24,813 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:44:24,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 212 events. 77/212 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 994 event pairs, 32 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 385. Up to 109 conditions per place. [2023-08-29 18:44:24,817 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 25 selfloop transitions, 4 changer transitions 2/37 dead transitions. [2023-08-29 18:44:24,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 139 flow [2023-08-29 18:44:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:44:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:44:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-29 18:44:24,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968468468468469 [2023-08-29 18:44:24,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-29 18:44:24,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-29 18:44:24,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:44:24,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-29 18:44:24,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:24,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:24,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:24,853 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 59 flow. Second operand 3 states and 265 transitions. [2023-08-29 18:44:24,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 139 flow [2023-08-29 18:44:24,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:44:24,857 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 82 flow [2023-08-29 18:44:24,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-29 18:44:24,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-29 18:44:24,863 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 82 flow [2023-08-29 18:44:24,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:24,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:44:24,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:44:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:44:24,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 18:44:24,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:44:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 306214503, now seen corresponding path program 1 times [2023-08-29 18:44:24,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:44:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417069079] [2023-08-29 18:44:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:44:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:44:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:44:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:44:24,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:44:24,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417069079] [2023-08-29 18:44:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417069079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:44:24,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:44:24,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:44:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298109242] [2023-08-29 18:44:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:44:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:44:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:44:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:44:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:44:25,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 148 [2023-08-29 18:44:25,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:44:25,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 148 [2023-08-29 18:44:25,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:44:25,073 INFO L130 PetriNetUnfolder]: 80/220 cut-off events. [2023-08-29 18:44:25,073 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-29 18:44:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 220 events. 80/220 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1040 event pairs, 59 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 452. Up to 163 conditions per place. [2023-08-29 18:44:25,075 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 23 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-29 18:44:25,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 156 flow [2023-08-29 18:44:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:44:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:44:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-29 18:44:25,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653153153153153 [2023-08-29 18:44:25,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-29 18:44:25,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-29 18:44:25,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:44:25,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-29 18:44:25,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,080 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 82 flow. Second operand 3 states and 251 transitions. [2023-08-29 18:44:25,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 156 flow [2023-08-29 18:44:25,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:44:25,082 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 106 flow [2023-08-29 18:44:25,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-29 18:44:25,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-29 18:44:25,083 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 106 flow [2023-08-29 18:44:25,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:44:25,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:44:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:44:25,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 18:44:25,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:44:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 296279994, now seen corresponding path program 1 times [2023-08-29 18:44:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:44:25,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681891214] [2023-08-29 18:44:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:44:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:44:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:44:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:44:25,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:44:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681891214] [2023-08-29 18:44:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681891214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:44:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:44:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:44:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013027440] [2023-08-29 18:44:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:44:25,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:44:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:44:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:44:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:44:25,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 148 [2023-08-29 18:44:25,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:44:25,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 148 [2023-08-29 18:44:25,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:44:25,191 INFO L130 PetriNetUnfolder]: 88/231 cut-off events. [2023-08-29 18:44:25,191 INFO L131 PetriNetUnfolder]: For 59/62 co-relation queries the response was YES. [2023-08-29 18:44:25,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 231 events. 88/231 cut-off events. For 59/62 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1097 event pairs, 52 based on Foata normal form. 1/214 useless extension candidates. Maximal degree in co-relation 516. Up to 172 conditions per place. [2023-08-29 18:44:25,193 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 24 selfloop transitions, 7 changer transitions 7/46 dead transitions. [2023-08-29 18:44:25,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 222 flow [2023-08-29 18:44:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:44:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:44:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-08-29 18:44:25,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-29 18:44:25,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-08-29 18:44:25,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-08-29 18:44:25,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:44:25,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-08-29 18:44:25,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,198 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 106 flow. Second operand 3 states and 259 transitions. [2023-08-29 18:44:25,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 222 flow [2023-08-29 18:44:25,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 18:44:25,201 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 133 flow [2023-08-29 18:44:25,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-08-29 18:44:25,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-29 18:44:25,202 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 133 flow [2023-08-29 18:44:25,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:44:25,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:44:25,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:44:25,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 18:44:25,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:44:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2070543308, now seen corresponding path program 1 times [2023-08-29 18:44:25,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:44:25,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391851805] [2023-08-29 18:44:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:44:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:44:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:44:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:44:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:44:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391851805] [2023-08-29 18:44:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391851805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:44:25,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:44:25,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 18:44:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252556019] [2023-08-29 18:44:25,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:44:25,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:44:25,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:44:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:44:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:44:25,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 148 [2023-08-29 18:44:25,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:44:25,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 148 [2023-08-29 18:44:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:44:25,380 INFO L130 PetriNetUnfolder]: 58/192 cut-off events. [2023-08-29 18:44:25,380 INFO L131 PetriNetUnfolder]: For 82/86 co-relation queries the response was YES. [2023-08-29 18:44:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 192 events. 58/192 cut-off events. For 82/86 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 865 event pairs, 14 based on Foata normal form. 10/196 useless extension candidates. Maximal degree in co-relation 447. Up to 104 conditions per place. [2023-08-29 18:44:25,381 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 14 selfloop transitions, 5 changer transitions 16/43 dead transitions. [2023-08-29 18:44:25,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 218 flow [2023-08-29 18:44:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:44:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:44:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-29 18:44:25,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2023-08-29 18:44:25,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-29 18:44:25,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-29 18:44:25,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:44:25,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-29 18:44:25,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,385 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 133 flow. Second operand 3 states and 258 transitions. [2023-08-29 18:44:25,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 218 flow [2023-08-29 18:44:25,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 192 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 18:44:25,387 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 97 flow [2023-08-29 18:44:25,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-29 18:44:25,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-29 18:44:25,388 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 97 flow [2023-08-29 18:44:25,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:44:25,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:44:25,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:44:25,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 18:44:25,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:44:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1073866754, now seen corresponding path program 1 times [2023-08-29 18:44:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:44:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903291200] [2023-08-29 18:44:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:44:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:44:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:44:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:44:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:44:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903291200] [2023-08-29 18:44:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903291200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:44:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:44:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 18:44:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401863962] [2023-08-29 18:44:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:44:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 18:44:25,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:44:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 18:44:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 18:44:25,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 148 [2023-08-29 18:44:25,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:44:25,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 148 [2023-08-29 18:44:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:44:25,628 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-29 18:44:25,628 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-29 18:44:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 29 events. 0/29 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2023-08-29 18:44:25,628 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-29 18:44:25,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 92 flow [2023-08-29 18:44:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 18:44:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 18:44:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2023-08-29 18:44:25,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388513513513513 [2023-08-29 18:44:25,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 319 transitions. [2023-08-29 18:44:25,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 319 transitions. [2023-08-29 18:44:25,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:44:25,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 319 transitions. [2023-08-29 18:44:25,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,633 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 97 flow. Second operand 4 states and 319 transitions. [2023-08-29 18:44:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 92 flow [2023-08-29 18:44:25,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 70 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-29 18:44:25,636 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-29 18:44:25,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-29 18:44:25,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2023-08-29 18:44:25,637 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-29 18:44:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:44:25,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 5 remaining) [2023-08-29 18:44:25,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-08-29 18:44:25,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-29 18:44:25,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-08-29 18:44:25,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-08-29 18:44:25,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:44:25,641 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 18:44:25,645 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 18:44:25,645 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 18:44:25,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 06:44:25 BasicIcfg [2023-08-29 18:44:25,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 18:44:25,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 18:44:25,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 18:44:25,649 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 18:44:25,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:44:21" (3/4) ... [2023-08-29 18:44:25,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 18:44:25,656 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 18:44:25,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-29 18:44:25,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 18:44:25,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-29 18:44:25,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 18:44:25,704 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 18:44:25,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 18:44:25,705 INFO L158 Benchmark]: Toolchain (without parser) took 4917.85ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 42.9MB in the beginning and 50.8MB in the end (delta: -8.0MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,706 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 18:44:25,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.29ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.1MB in the end (delta: 1.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.52ms. Allocated memory is still 71.3MB. Free memory was 41.1MB in the beginning and 39.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,707 INFO L158 Benchmark]: Boogie Preprocessor took 20.15ms. Allocated memory is still 71.3MB. Free memory was 39.1MB in the beginning and 37.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 18:44:25,707 INFO L158 Benchmark]: RCFGBuilder took 407.62ms. Allocated memory is still 71.3MB. Free memory was 37.5MB in the beginning and 45.7MB in the end (delta: -8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,707 INFO L158 Benchmark]: TraceAbstraction took 3904.53ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.9MB in the beginning and 54.0MB in the end (delta: -9.1MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,707 INFO L158 Benchmark]: Witness Printer took 56.45ms. Allocated memory is still 104.9MB. Free memory was 54.0MB in the beginning and 50.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 18:44:25,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.29ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.1MB in the end (delta: 1.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.52ms. Allocated memory is still 71.3MB. Free memory was 41.1MB in the beginning and 39.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.15ms. Allocated memory is still 71.3MB. Free memory was 39.1MB in the beginning and 37.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 407.62ms. Allocated memory is still 71.3MB. Free memory was 37.5MB in the beginning and 45.7MB in the end (delta: -8.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3904.53ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.9MB in the beginning and 54.0MB in the end (delta: -9.1MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Witness Printer took 56.45ms. Allocated memory is still 104.9MB. Free memory was 54.0MB in the beginning and 50.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 86 PlacesBefore, 30 PlacesAfterwards, 84 TransitionsBefore, 28 TransitionsAfterwards, 1050 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 63 TotalNumberOfCompositions, 3662 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1392, independent: 1138, independent conditional: 0, independent unconditional: 1138, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 554, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1392, independent: 626, independent conditional: 0, independent unconditional: 626, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 554, unknown conditional: 0, unknown unconditional: 554] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 705]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 701]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 688]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 5 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: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 331 IncrementalHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 10 mSDtfsCounter, 331 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 18:44:25,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE