./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:47:59,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:47:59,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:47:59,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:47:59,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:47:59,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:47:59,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:47:59,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:47:59,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:47:59,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:47:59,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:47:59,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:47:59,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:47:59,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:47:59,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:47:59,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:47:59,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:47:59,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:47:59,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:47:59,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:47:59,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:47:59,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:47:59,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:47:59,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:47:59,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:47:59,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:47:59,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:47:59,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:47:59,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:47:59,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:47:59,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:47:59,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:47:59,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:47:59,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:47:59,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:47:59,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:47:59,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:47:59,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:47:59,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:47:59,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:47:59,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:47:59,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:47:59,626 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:47:59,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:47:59,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:47:59,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:47:59,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:47:59,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:47:59,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:47:59,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:47:59,629 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:47:59,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:47:59,630 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:47:59,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:47:59,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:47:59,631 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:47:59,632 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:47:59,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:47:59,633 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:47:59,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:47:59,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:47:59,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:47:59,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:47:59,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:47:59,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:47:59,636 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:47:59,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:47:59,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:47:59,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:47:59,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:47:59,981 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:47:59,981 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:47:59,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-29 02:48:01,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:48:01,500 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:48:01,501 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-29 02:48:01,512 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f12c9017/cf7bf5f686774be2b25f57b64931fdb7/FLAGe8e492910 [2023-08-29 02:48:01,526 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f12c9017/cf7bf5f686774be2b25f57b64931fdb7 [2023-08-29 02:48:01,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:48:01,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:48:01,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:48:01,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:48:01,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:48:01,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:48:01" (1/1) ... [2023-08-29 02:48:01,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec3f422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:01, skipping insertion in model container [2023-08-29 02:48:01,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:48:01" (1/1) ... [2023-08-29 02:48:01,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:48:01,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:48:01,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2023-08-29 02:48:01,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:48:01,854 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:48:01,924 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2023-08-29 02:48:01,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:48:02,013 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:48:02,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02 WrapperNode [2023-08-29 02:48:02,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:48:02,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:48:02,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:48:02,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:48:02,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,079 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-29 02:48:02,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:48:02,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:48:02,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:48:02,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:48:02,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,129 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:48:02,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:48:02,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:48:02,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:48:02,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (1/1) ... [2023-08-29 02:48:02,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:48:02,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:02,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 02:48:02,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 02:48:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:48:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:48:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:48:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:48:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:48:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:48:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:48:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:48:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:48:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:48:02,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:48:02,224 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:48:02,424 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:48:02,427 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:48:02,678 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:48:02,685 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:48:02,700 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-29 02:48:02,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:48:02 BoogieIcfgContainer [2023-08-29 02:48:02,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:48:02,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:48:02,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:48:02,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:48:02,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:48:01" (1/3) ... [2023-08-29 02:48:02,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7140ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:48:02, skipping insertion in model container [2023-08-29 02:48:02,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:48:02" (2/3) ... [2023-08-29 02:48:02,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7140ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:48:02, skipping insertion in model container [2023-08-29 02:48:02,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:48:02" (3/3) ... [2023-08-29 02:48:02,710 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-29 02:48:02,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:48:02,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:48:02,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 02:48:02,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:48:02,814 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:48:02,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:02,947 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 02:48:02,948 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:02,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 02:48:02,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:02,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:02,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:02,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:02,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:02,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:03,015 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 02:48:03,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:03,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 02:48:03,021 INFO L119 LiptonReduction]: Number of co-enabled transitions 6996 [2023-08-29 02:48:05,878 INFO L134 LiptonReduction]: Checked pairs total: 27247 [2023-08-29 02:48:05,879 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 02:48:05,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:48:05,897 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;@39576c55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:05,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-29 02:48:05,899 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:48:05,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:05,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:05,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:48:05,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:05,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:05,905 INFO L85 PathProgramCache]: Analyzing trace with hash 17306, now seen corresponding path program 1 times [2023-08-29 02:48:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116895041] [2023-08-29 02:48:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116895041] [2023-08-29 02:48:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116895041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:48:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955490921] [2023-08-29 02:48:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:48:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:06,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:48:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:48:06,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 251 [2023-08-29 02:48:06,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 145 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:06,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 251 [2023-08-29 02:48:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:06,207 INFO L130 PetriNetUnfolder]: 120/516 cut-off events. [2023-08-29 02:48:06,207 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:06,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 516 events. 120/516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2555 event pairs, 120 based on Foata normal form. 11/491 useless extension candidates. Maximal degree in co-relation 757. Up to 274 conditions per place. [2023-08-29 02:48:06,214 INFO L137 encePairwiseOnDemand]: 241/251 looper letters, 24 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-29 02:48:06,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 173 flow [2023-08-29 02:48:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:48:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:48:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-08-29 02:48:06,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175298804780877 [2023-08-29 02:48:06,234 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-08-29 02:48:06,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-08-29 02:48:06,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:06,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-08-29 02:48:06,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,251 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,253 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 145 flow. Second operand 2 states and 310 transitions. [2023-08-29 02:48:06,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 173 flow [2023-08-29 02:48:06,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:06,258 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 125 flow [2023-08-29 02:48:06,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=125, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-08-29 02:48:06,264 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-29 02:48:06,265 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 125 flow [2023-08-29 02:48:06,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:06,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:48:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:48:06,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:06,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash 535475, now seen corresponding path program 1 times [2023-08-29 02:48:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:06,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992658783] [2023-08-29 02:48:06,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992658783] [2023-08-29 02:48:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992658783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:48:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763663062] [2023-08-29 02:48:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:48:06,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 251 [2023-08-29 02:48:06,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:06,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 251 [2023-08-29 02:48:06,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:06,482 INFO L130 PetriNetUnfolder]: 120/528 cut-off events. [2023-08-29 02:48:06,483 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:06,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 528 events. 120/528 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2598 event pairs, 99 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 797. Up to 251 conditions per place. [2023-08-29 02:48:06,485 INFO L137 encePairwiseOnDemand]: 248/251 looper letters, 35 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-29 02:48:06,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 225 flow [2023-08-29 02:48:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-29 02:48:06,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843293492695883 [2023-08-29 02:48:06,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-29 02:48:06,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-29 02:48:06,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:06,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-29 02:48:06,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,492 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 125 flow. Second operand 3 states and 440 transitions. [2023-08-29 02:48:06,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 225 flow [2023-08-29 02:48:06,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:06,495 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 133 flow [2023-08-29 02:48:06,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-29 02:48:06,496 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-29 02:48:06,496 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 133 flow [2023-08-29 02:48:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:06,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:48:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:48:06,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:06,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1201333518, now seen corresponding path program 1 times [2023-08-29 02:48:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:06,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662475728] [2023-08-29 02:48:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:06,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662475728] [2023-08-29 02:48:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662475728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701120784] [2023-08-29 02:48:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:06,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:06,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:06,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:48:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:06,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:06,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:06,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701120784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:48:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079567384] [2023-08-29 02:48:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:48:06,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 251 [2023-08-29 02:48:06,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:06,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 251 [2023-08-29 02:48:06,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:06,820 INFO L130 PetriNetUnfolder]: 160/593 cut-off events. [2023-08-29 02:48:06,820 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 02:48:06,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 593 events. 160/593 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2857 event pairs, 102 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 999. Up to 334 conditions per place. [2023-08-29 02:48:06,823 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-29 02:48:06,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 212 flow [2023-08-29 02:48:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-29 02:48:06,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630810092961488 [2023-08-29 02:48:06,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-29 02:48:06,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-29 02:48:06,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:06,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-29 02:48:06,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,839 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 133 flow. Second operand 3 states and 424 transitions. [2023-08-29 02:48:06,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 212 flow [2023-08-29 02:48:06,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:48:06,841 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 139 flow [2023-08-29 02:48:06,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-29 02:48:06,846 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2023-08-29 02:48:06,846 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 139 flow [2023-08-29 02:48:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:06,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:06,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:06,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:07,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:07,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash -105555679, now seen corresponding path program 1 times [2023-08-29 02:48:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:07,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635155469] [2023-08-29 02:48:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635155469] [2023-08-29 02:48:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635155469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:07,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:07,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133453311] [2023-08-29 02:48:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:07,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:07,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:07,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 251 [2023-08-29 02:48:07,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:07,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 251 [2023-08-29 02:48:07,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:07,780 INFO L130 PetriNetUnfolder]: 281/688 cut-off events. [2023-08-29 02:48:07,781 INFO L131 PetriNetUnfolder]: For 78/79 co-relation queries the response was YES. [2023-08-29 02:48:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 688 events. 281/688 cut-off events. For 78/79 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2937 event pairs, 146 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1391. Up to 351 conditions per place. [2023-08-29 02:48:07,784 INFO L137 encePairwiseOnDemand]: 239/251 looper letters, 71 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-08-29 02:48:07,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 397 flow [2023-08-29 02:48:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 772 transitions. [2023-08-29 02:48:07,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126162018592297 [2023-08-29 02:48:07,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 772 transitions. [2023-08-29 02:48:07,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 772 transitions. [2023-08-29 02:48:07,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:07,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 772 transitions. [2023-08-29 02:48:07,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.66666666666666) internal successors, (772), 6 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,793 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,794 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 139 flow. Second operand 6 states and 772 transitions. [2023-08-29 02:48:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 397 flow [2023-08-29 02:48:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:07,798 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 155 flow [2023-08-29 02:48:07,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-08-29 02:48:07,800 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2023-08-29 02:48:07,800 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 155 flow [2023-08-29 02:48:07,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:07,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:07,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 02:48:07,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:07,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1187729994, now seen corresponding path program 1 times [2023-08-29 02:48:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:07,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137701607] [2023-08-29 02:48:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:07,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137701607] [2023-08-29 02:48:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137701607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439780886] [2023-08-29 02:48:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:07,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:07,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:07,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:07,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:48:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:07,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:07,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:07,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:48:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439780886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:48:07,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:48:07,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-29 02:48:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766361956] [2023-08-29 02:48:07,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:48:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:07,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:08,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 251 [2023-08-29 02:48:08,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:08,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 251 [2023-08-29 02:48:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:08,049 INFO L130 PetriNetUnfolder]: 24/103 cut-off events. [2023-08-29 02:48:08,049 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2023-08-29 02:48:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 103 events. 24/103 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 15/114 useless extension candidates. Maximal degree in co-relation 210. Up to 50 conditions per place. [2023-08-29 02:48:08,050 INFO L137 encePairwiseOnDemand]: 248/251 looper letters, 21 selfloop transitions, 2 changer transitions 6/55 dead transitions. [2023-08-29 02:48:08,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 200 flow [2023-08-29 02:48:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:48:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:48:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-08-29 02:48:08,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597609561752988 [2023-08-29 02:48:08,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-08-29 02:48:08,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-08-29 02:48:08,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:08,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-08-29 02:48:08,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,057 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 155 flow. Second operand 4 states and 562 transitions. [2023-08-29 02:48:08,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 200 flow [2023-08-29 02:48:08,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 175 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-29 02:48:08,062 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 89 flow [2023-08-29 02:48:08,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-29 02:48:08,064 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2023-08-29 02:48:08,064 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 89 flow [2023-08-29 02:48:08,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:08,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:08,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:08,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:08,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:08,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:08,272 INFO L85 PathProgramCache]: Analyzing trace with hash 880342330, now seen corresponding path program 1 times [2023-08-29 02:48:08,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:08,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283850513] [2023-08-29 02:48:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:08,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283850513] [2023-08-29 02:48:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283850513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031421897] [2023-08-29 02:48:08,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:08,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:08,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:08,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 251 [2023-08-29 02:48:08,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:08,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 251 [2023-08-29 02:48:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:08,681 INFO L130 PetriNetUnfolder]: 50/150 cut-off events. [2023-08-29 02:48:08,681 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:48:08,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 150 events. 50/150 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 249 event pairs, 40 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 315. Up to 106 conditions per place. [2023-08-29 02:48:08,682 INFO L137 encePairwiseOnDemand]: 245/251 looper letters, 32 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-29 02:48:08,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 185 flow [2023-08-29 02:48:08,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-29 02:48:08,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634794156706507 [2023-08-29 02:48:08,685 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-29 02:48:08,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-29 02:48:08,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:08,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-29 02:48:08,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,690 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 89 flow. Second operand 6 states and 698 transitions. [2023-08-29 02:48:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 185 flow [2023-08-29 02:48:08,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:48:08,691 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2023-08-29 02:48:08,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-29 02:48:08,692 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -15 predicate places. [2023-08-29 02:48:08,692 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2023-08-29 02:48:08,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:08,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:08,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:08,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:48:08,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:08,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 599815296, now seen corresponding path program 1 times [2023-08-29 02:48:08,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:08,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56784904] [2023-08-29 02:48:08,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:08,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:09,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:09,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56784904] [2023-08-29 02:48:09,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56784904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:09,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:09,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300902810] [2023-08-29 02:48:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:09,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:09,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 251 [2023-08-29 02:48:09,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:09,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:09,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 251 [2023-08-29 02:48:09,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:09,233 INFO L130 PetriNetUnfolder]: 50/147 cut-off events. [2023-08-29 02:48:09,234 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:09,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 147 events. 50/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 246 event pairs, 42 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 326. Up to 111 conditions per place. [2023-08-29 02:48:09,235 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-29 02:48:09,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 186 flow [2023-08-29 02:48:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-29 02:48:09,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634794156706507 [2023-08-29 02:48:09,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-29 02:48:09,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-29 02:48:09,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:09,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-29 02:48:09,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:09,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:09,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:09,242 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 6 states and 698 transitions. [2023-08-29 02:48:09,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 186 flow [2023-08-29 02:48:09,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:48:09,244 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-29 02:48:09,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-29 02:48:09,244 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -16 predicate places. [2023-08-29 02:48:09,245 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-29 02:48:09,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:09,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-29 02:48:09,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-29 02:48:09,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-29 02:48:09,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-29 02:48:09,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-29 02:48:09,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-29 02:48:09,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-29 02:48:09,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-29 02:48:09,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-29 02:48:09,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-29 02:48:09,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-29 02:48:09,254 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-29 02:48:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-29 02:48:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-29 02:48:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-29 02:48:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-29 02:48:09,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:48:09,256 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:09,258 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 (1/2) [2023-08-29 02:48:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,285 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 02:48:09,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 02:48:09,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:09,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 02:48:09,311 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 02:48:09,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 02:48:09,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 6996 [2023-08-29 02:48:11,656 INFO L134 LiptonReduction]: Checked pairs total: 27247 [2023-08-29 02:48:11,656 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 02:48:11,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:48:11,665 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;@39576c55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:11,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:48:11,671 INFO L130 PetriNetUnfolder]: 0/23 cut-off events. [2023-08-29 02:48:11,671 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:11,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:11,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:48:11,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:48:11,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1788207090, now seen corresponding path program 1 times [2023-08-29 02:48:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686492146] [2023-08-29 02:48:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:11,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:48:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:11,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:48:11,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:48:11,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:48:11,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:48:11,714 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:48:11,716 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:48:11,717 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:48:11,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:48:11,754 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:48:11,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,791 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 02:48:11,792 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:11,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 02:48:11,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:11,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:11,833 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 02:48:11,833 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 02:48:11,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 22836 [2023-08-29 02:48:14,480 INFO L134 LiptonReduction]: Checked pairs total: 108630 [2023-08-29 02:48:14,481 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-29 02:48:14,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:48:14,483 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;@39576c55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:14,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:48:14,484 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:48:14,484 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:14,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:14,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:48:14,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:14,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash 33594, now seen corresponding path program 1 times [2023-08-29 02:48:14,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857391666] [2023-08-29 02:48:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857391666] [2023-08-29 02:48:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857391666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:14,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:14,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:48:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306064228] [2023-08-29 02:48:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:14,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:48:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:14,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:48:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:48:14,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 341 [2023-08-29 02:48:14,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 199.0) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:14,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:14,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 341 [2023-08-29 02:48:14,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:15,341 INFO L130 PetriNetUnfolder]: 3396/9137 cut-off events. [2023-08-29 02:48:15,341 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-29 02:48:15,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14598 conditions, 9137 events. 3396/9137 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 83520 event pairs, 3396 based on Foata normal form. 747/9193 useless extension candidates. Maximal degree in co-relation 10340. Up to 5409 conditions per place. [2023-08-29 02:48:15,394 INFO L137 encePairwiseOnDemand]: 325/341 looper letters, 37 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2023-08-29 02:48:15,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 292 flow [2023-08-29 02:48:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:48:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:48:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 449 transitions. [2023-08-29 02:48:15,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.658357771260997 [2023-08-29 02:48:15,396 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 449 transitions. [2023-08-29 02:48:15,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 449 transitions. [2023-08-29 02:48:15,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:15,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 449 transitions. [2023-08-29 02:48:15,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:15,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:15,401 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:15,402 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 250 flow. Second operand 2 states and 449 transitions. [2023-08-29 02:48:15,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 292 flow [2023-08-29 02:48:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 290 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:15,404 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 216 flow [2023-08-29 02:48:15,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2023-08-29 02:48:15,405 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2023-08-29 02:48:15,406 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 216 flow [2023-08-29 02:48:15,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 199.0) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:15,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:15,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:48:15,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:48:15,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:15,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1040543, now seen corresponding path program 1 times [2023-08-29 02:48:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395595410] [2023-08-29 02:48:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:15,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:15,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395595410] [2023-08-29 02:48:15,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395595410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:15,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:15,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:48:15,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40847903] [2023-08-29 02:48:15,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:15,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:15,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:15,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:15,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:48:15,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 341 [2023-08-29 02:48:15,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:15,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:15,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 341 [2023-08-29 02:48:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:16,274 INFO L130 PetriNetUnfolder]: 3396/9096 cut-off events. [2023-08-29 02:48:16,274 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 02:48:16,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 9096 events. 3396/9096 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 83952 event pairs, 1560 based on Foata normal form. 0/8533 useless extension candidates. Maximal degree in co-relation 14550. Up to 5386 conditions per place. [2023-08-29 02:48:16,317 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 49 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-08-29 02:48:16,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 346 flow [2023-08-29 02:48:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-29 02:48:16,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197458455522972 [2023-08-29 02:48:16,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-29 02:48:16,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-29 02:48:16,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:16,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-29 02:48:16,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:16,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:16,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:16,324 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 216 flow. Second operand 3 states and 634 transitions. [2023-08-29 02:48:16,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 346 flow [2023-08-29 02:48:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:16,327 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 228 flow [2023-08-29 02:48:16,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2023-08-29 02:48:16,327 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2023-08-29 02:48:16,328 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 228 flow [2023-08-29 02:48:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:16,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:16,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:48:16,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:16,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -229437386, now seen corresponding path program 1 times [2023-08-29 02:48:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689631956] [2023-08-29 02:48:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:16,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:16,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689631956] [2023-08-29 02:48:16,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689631956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:16,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116655784] [2023-08-29 02:48:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:16,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:16,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:16,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:16,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:48:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:16,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:16,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:16,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116655784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:48:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099424661] [2023-08-29 02:48:16,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:48:16,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 341 [2023-08-29 02:48:16,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:16,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:16,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 341 [2023-08-29 02:48:16,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:17,505 INFO L130 PetriNetUnfolder]: 4854/11764 cut-off events. [2023-08-29 02:48:17,505 INFO L131 PetriNetUnfolder]: For 550/550 co-relation queries the response was YES. [2023-08-29 02:48:17,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 11764 events. 4854/11764 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 104052 event pairs, 3568 based on Foata normal form. 0/11434 useless extension candidates. Maximal degree in co-relation 20000. Up to 7616 conditions per place. [2023-08-29 02:48:17,552 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 50 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-29 02:48:17,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 356 flow [2023-08-29 02:48:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-29 02:48:17,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-08-29 02:48:17,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-29 02:48:17,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-29 02:48:17,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:17,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-29 02:48:17,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:17,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:17,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:17,561 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 228 flow. Second operand 3 states and 605 transitions. [2023-08-29 02:48:17,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 356 flow [2023-08-29 02:48:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:48:17,563 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 239 flow [2023-08-29 02:48:17,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2023-08-29 02:48:17,565 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2023-08-29 02:48:17,565 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 239 flow [2023-08-29 02:48:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:17,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:17,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:17,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:17,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:17,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:17,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:17,772 INFO L85 PathProgramCache]: Analyzing trace with hash 691039102, now seen corresponding path program 1 times [2023-08-29 02:48:17,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:17,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858515778] [2023-08-29 02:48:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:17,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858515778] [2023-08-29 02:48:17,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858515778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:17,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:17,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189727602] [2023-08-29 02:48:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:17,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:17,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:18,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 341 [2023-08-29 02:48:18,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:18,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:18,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 341 [2023-08-29 02:48:18,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:22,448 INFO L130 PetriNetUnfolder]: 33490/56488 cut-off events. [2023-08-29 02:48:22,448 INFO L131 PetriNetUnfolder]: For 7119/7121 co-relation queries the response was YES. [2023-08-29 02:48:22,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114037 conditions, 56488 events. 33490/56488 cut-off events. For 7119/7121 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 454754 event pairs, 10470 based on Foata normal form. 0/54987 useless extension candidates. Maximal degree in co-relation 114030. Up to 21579 conditions per place. [2023-08-29 02:48:22,956 INFO L137 encePairwiseOnDemand]: 297/341 looper letters, 271 selfloop transitions, 84 changer transitions 0/382 dead transitions. [2023-08-29 02:48:22,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 382 transitions, 1569 flow [2023-08-29 02:48:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:22,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1270 transitions. [2023-08-29 02:48:22,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207233626588465 [2023-08-29 02:48:22,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1270 transitions. [2023-08-29 02:48:22,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1270 transitions. [2023-08-29 02:48:22,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:22,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1270 transitions. [2023-08-29 02:48:22,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:22,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:22,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:22,970 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 239 flow. Second operand 6 states and 1270 transitions. [2023-08-29 02:48:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 382 transitions, 1569 flow [2023-08-29 02:48:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 382 transitions, 1569 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:22,977 INFO L231 Difference]: Finished difference. Result has 119 places, 194 transitions, 871 flow [2023-08-29 02:48:22,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=871, PETRI_PLACES=119, PETRI_TRANSITIONS=194} [2023-08-29 02:48:22,979 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 9 predicate places. [2023-08-29 02:48:22,979 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 194 transitions, 871 flow [2023-08-29 02:48:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:22,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:48:22,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:22,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 66067723, now seen corresponding path program 1 times [2023-08-29 02:48:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271042751] [2023-08-29 02:48:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:23,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271042751] [2023-08-29 02:48:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271042751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:23,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27464527] [2023-08-29 02:48:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:23,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:23,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:48:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:23,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:23,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:23,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:48:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27464527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:48:23,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:48:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:48:23,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702782923] [2023-08-29 02:48:23,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:48:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:48:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:48:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:48:23,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 341 [2023-08-29 02:48:23,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 194 transitions, 871 flow. Second operand has 7 states, 7 states have (on average 195.57142857142858) internal successors, (1369), 7 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:23,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:23,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 341 [2023-08-29 02:48:23,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:23,844 INFO L130 PetriNetUnfolder]: 3288/8259 cut-off events. [2023-08-29 02:48:23,844 INFO L131 PetriNetUnfolder]: For 5428/5794 co-relation queries the response was YES. [2023-08-29 02:48:23,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20512 conditions, 8259 events. 3288/8259 cut-off events. For 5428/5794 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 71358 event pairs, 770 based on Foata normal form. 649/8479 useless extension candidates. Maximal degree in co-relation 20500. Up to 3326 conditions per place. [2023-08-29 02:48:23,898 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 139 selfloop transitions, 3 changer transitions 0/255 dead transitions. [2023-08-29 02:48:23,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 255 transitions, 1440 flow [2023-08-29 02:48:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:48:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:48:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2023-08-29 02:48:23,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6070381231671554 [2023-08-29 02:48:23,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2023-08-29 02:48:23,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2023-08-29 02:48:23,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:23,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2023-08-29 02:48:23,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:23,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:23,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 341.0) internal successors, (2046), 6 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:23,908 INFO L175 Difference]: Start difference. First operand has 119 places, 194 transitions, 871 flow. Second operand 5 states and 1035 transitions. [2023-08-29 02:48:23,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 255 transitions, 1440 flow [2023-08-29 02:48:23,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 255 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:23,916 INFO L231 Difference]: Finished difference. Result has 110 places, 180 transitions, 840 flow [2023-08-29 02:48:23,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=110, PETRI_TRANSITIONS=180} [2023-08-29 02:48:23,917 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 0 predicate places. [2023-08-29 02:48:23,917 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 180 transitions, 840 flow [2023-08-29 02:48:23,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 195.57142857142858) internal successors, (1369), 7 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:23,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:23,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:23,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:24,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:24,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:24,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:24,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1947460912, now seen corresponding path program 1 times [2023-08-29 02:48:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700855034] [2023-08-29 02:48:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:24,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:24,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700855034] [2023-08-29 02:48:24,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700855034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:24,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:24,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:24,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073046040] [2023-08-29 02:48:24,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:24,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:24,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:24,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 341 [2023-08-29 02:48:24,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 180 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:24,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:24,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 341 [2023-08-29 02:48:24,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:26,029 INFO L130 PetriNetUnfolder]: 8925/15983 cut-off events. [2023-08-29 02:48:26,029 INFO L131 PetriNetUnfolder]: For 12511/12673 co-relation queries the response was YES. [2023-08-29 02:48:26,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46657 conditions, 15983 events. 8925/15983 cut-off events. For 12511/12673 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 114934 event pairs, 4934 based on Foata normal form. 144/16073 useless extension candidates. Maximal degree in co-relation 46644. Up to 11915 conditions per place. [2023-08-29 02:48:26,117 INFO L137 encePairwiseOnDemand]: 314/341 looper letters, 236 selfloop transitions, 86 changer transitions 0/347 dead transitions. [2023-08-29 02:48:26,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 347 transitions, 2184 flow [2023-08-29 02:48:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1102 transitions. [2023-08-29 02:48:26,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386119257086999 [2023-08-29 02:48:26,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1102 transitions. [2023-08-29 02:48:26,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1102 transitions. [2023-08-29 02:48:26,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:26,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1102 transitions. [2023-08-29 02:48:26,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:26,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:26,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:26,128 INFO L175 Difference]: Start difference. First operand has 110 places, 180 transitions, 840 flow. Second operand 6 states and 1102 transitions. [2023-08-29 02:48:26,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 347 transitions, 2184 flow [2023-08-29 02:48:26,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 347 transitions, 2161 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-29 02:48:26,140 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-29 02:48:26,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-29 02:48:26,141 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 7 predicate places. [2023-08-29 02:48:26,141 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-29 02:48:26,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:26,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:26,142 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:26,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:48:26,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:26,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 459696978, now seen corresponding path program 1 times [2023-08-29 02:48:26,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:26,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962814307] [2023-08-29 02:48:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:48:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:26,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962814307] [2023-08-29 02:48:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962814307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:26,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:26,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795765629] [2023-08-29 02:48:26,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:26,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:26,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:26,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:26,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 341 [2023-08-29 02:48:26,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:26,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:26,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 341 [2023-08-29 02:48:26,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:28,530 INFO L130 PetriNetUnfolder]: 10250/18202 cut-off events. [2023-08-29 02:48:28,530 INFO L131 PetriNetUnfolder]: For 20843/21062 co-relation queries the response was YES. [2023-08-29 02:48:28,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58655 conditions, 18202 events. 10250/18202 cut-off events. For 20843/21062 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 132241 event pairs, 5329 based on Foata normal form. 162/18307 useless extension candidates. Maximal degree in co-relation 58639. Up to 13645 conditions per place. [2023-08-29 02:48:28,621 INFO L137 encePairwiseOnDemand]: 314/341 looper letters, 323 selfloop transitions, 101 changer transitions 0/449 dead transitions. [2023-08-29 02:48:28,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 449 transitions, 3425 flow [2023-08-29 02:48:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1102 transitions. [2023-08-29 02:48:28,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386119257086999 [2023-08-29 02:48:28,625 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1102 transitions. [2023-08-29 02:48:28,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1102 transitions. [2023-08-29 02:48:28,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:28,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1102 transitions. [2023-08-29 02:48:28,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:28,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:28,632 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:28,632 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1102 transitions. [2023-08-29 02:48:28,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 449 transitions, 3425 flow [2023-08-29 02:48:28,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 449 transitions, 3409 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:28,683 INFO L231 Difference]: Finished difference. Result has 127 places, 370 transitions, 2765 flow [2023-08-29 02:48:28,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2765, PETRI_PLACES=127, PETRI_TRANSITIONS=370} [2023-08-29 02:48:28,684 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 17 predicate places. [2023-08-29 02:48:28,684 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 370 transitions, 2765 flow [2023-08-29 02:48:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:28,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:28,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:28,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 02:48:28,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:28,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1822060728, now seen corresponding path program 1 times [2023-08-29 02:48:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078788126] [2023-08-29 02:48:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:28,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078788126] [2023-08-29 02:48:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078788126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759908271] [2023-08-29 02:48:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:28,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:28,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:28,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 02:48:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 02:48:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:28,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:48:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:48:29,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 02:48:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:29,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759908271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:29,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-29 02:48:29,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980521396] [2023-08-29 02:48:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:29,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:48:29,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:29,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:48:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 02:48:29,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 341 [2023-08-29 02:48:29,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 370 transitions, 2765 flow. Second operand has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:29,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 341 [2023-08-29 02:48:29,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:29,341 INFO L130 PetriNetUnfolder]: 442/1576 cut-off events. [2023-08-29 02:48:29,341 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2023-08-29 02:48:29,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 1576 events. 442/1576 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9134 event pairs, 99 based on Foata normal form. 114/1690 useless extension candidates. Maximal degree in co-relation 4534. Up to 649 conditions per place. [2023-08-29 02:48:29,349 INFO L137 encePairwiseOnDemand]: 332/341 looper letters, 33 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-29 02:48:29,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 90 transitions, 526 flow [2023-08-29 02:48:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:48:29,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:48:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 775 transitions. [2023-08-29 02:48:29,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-29 02:48:29,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 775 transitions. [2023-08-29 02:48:29,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 775 transitions. [2023-08-29 02:48:29,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:29,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 775 transitions. [2023-08-29 02:48:29,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,357 INFO L175 Difference]: Start difference. First operand has 127 places, 370 transitions, 2765 flow. Second operand 4 states and 775 transitions. [2023-08-29 02:48:29,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 90 transitions, 526 flow [2023-08-29 02:48:29,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 298 flow, removed 54 selfloop flow, removed 30 redundant places. [2023-08-29 02:48:29,367 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-29 02:48:29,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-29 02:48:29,367 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -16 predicate places. [2023-08-29 02:48:29,368 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-29 02:48:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:29,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:29,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 02:48:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 02:48:29,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:29,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1552974506, now seen corresponding path program 1 times [2023-08-29 02:48:29,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:29,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268406842] [2023-08-29 02:48:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:29,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268406842] [2023-08-29 02:48:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268406842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:29,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846459375] [2023-08-29 02:48:29,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:29,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:29,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 341 [2023-08-29 02:48:29,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:29,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:29,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 341 [2023-08-29 02:48:29,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:30,269 INFO L130 PetriNetUnfolder]: 932/1996 cut-off events. [2023-08-29 02:48:30,269 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-29 02:48:30,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 1996 events. 932/1996 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9551 event pairs, 828 based on Foata normal form. 0/1978 useless extension candidates. Maximal degree in co-relation 4343. Up to 1617 conditions per place. [2023-08-29 02:48:30,277 INFO L137 encePairwiseOnDemand]: 335/341 looper letters, 74 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-29 02:48:30,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 461 flow [2023-08-29 02:48:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 981 transitions. [2023-08-29 02:48:30,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47947214076246336 [2023-08-29 02:48:30,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 981 transitions. [2023-08-29 02:48:30,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 981 transitions. [2023-08-29 02:48:30,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:30,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 981 transitions. [2023-08-29 02:48:30,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.5) internal successors, (981), 6 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,299 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 981 transitions. [2023-08-29 02:48:30,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 461 flow [2023-08-29 02:48:30,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:48:30,302 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-29 02:48:30,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-29 02:48:30,302 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -14 predicate places. [2023-08-29 02:48:30,303 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-29 02:48:30,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.83333333333334) internal successors, (929), 6 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:48:30,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:30,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash -94240179, now seen corresponding path program 1 times [2023-08-29 02:48:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560842174] [2023-08-29 02:48:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:48:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560842174] [2023-08-29 02:48:30,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560842174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:30,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:30,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:30,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237846247] [2023-08-29 02:48:30,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:30,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:30,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:30,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 341 [2023-08-29 02:48:30,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:30,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 341 [2023-08-29 02:48:30,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:30,944 INFO L130 PetriNetUnfolder]: 704/1546 cut-off events. [2023-08-29 02:48:30,944 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-08-29 02:48:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1546 events. 704/1546 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7097 event pairs, 637 based on Foata normal form. 15/1552 useless extension candidates. Maximal degree in co-relation 3389. Up to 1261 conditions per place. [2023-08-29 02:48:30,947 INFO L137 encePairwiseOnDemand]: 336/341 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-29 02:48:30,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 387 flow [2023-08-29 02:48:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 974 transitions. [2023-08-29 02:48:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760508308895406 [2023-08-29 02:48:30,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 974 transitions. [2023-08-29 02:48:30,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 974 transitions. [2023-08-29 02:48:30,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:30,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 974 transitions. [2023-08-29 02:48:30,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.33333333333334) internal successors, (974), 6 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,956 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,956 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 974 transitions. [2023-08-29 02:48:30,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 387 flow [2023-08-29 02:48:30,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 377 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:48:30,958 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-29 02:48:30,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-29 02:48:30,958 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -18 predicate places. [2023-08-29 02:48:30,959 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-29 02:48:30,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.0) internal successors, (930), 6 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:30,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:48:30,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:48:30,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:48:30,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:48:30,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:48:30,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:48:30,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:48:30,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:48:30,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:48:30,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:48:30,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:48:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:48:30,963 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:30,964 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:48:30,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:30,996 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 02:48:30,996 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:30,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 02:48:30,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:31,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:31,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:31,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:31,000 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:31,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 02:48:31,024 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 02:48:31,025 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:31,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 02:48:31,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 22836 [2023-08-29 02:48:33,540 INFO L134 LiptonReduction]: Checked pairs total: 108422 [2023-08-29 02:48:33,540 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-29 02:48:33,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:48:33,542 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;@39576c55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:33,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:48:33,547 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2023-08-29 02:48:33,547 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:33,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:33,547 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:48:33,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:48:33,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:33,548 INFO L85 PathProgramCache]: Analyzing trace with hash -736847209, now seen corresponding path program 1 times [2023-08-29 02:48:33,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:33,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516162548] [2023-08-29 02:48:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:33,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:33,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:48:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:33,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:48:33,569 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:48:33,569 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:48:33,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:48:33,569 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:48:33,570 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:48:33,570 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:48:33,570 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:48:33,591 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:48:33,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,639 INFO L130 PetriNetUnfolder]: 34/435 cut-off events. [2023-08-29 02:48:33,639 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 02:48:33,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 435 events. 34/435 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2023-08-29 02:48:33,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:33,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 02:48:33,694 INFO L130 PetriNetUnfolder]: 34/435 cut-off events. [2023-08-29 02:48:33,694 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 02:48:33,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 435 events. 34/435 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2023-08-29 02:48:33,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 47520 [2023-08-29 02:48:36,266 INFO L134 LiptonReduction]: Checked pairs total: 246302 [2023-08-29 02:48:36,266 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-29 02:48:36,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:48:36,268 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;@39576c55, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:36,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-29 02:48:36,269 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:48:36,269 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:36,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:48:36,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:48:36,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 53498, now seen corresponding path program 1 times [2023-08-29 02:48:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474584028] [2023-08-29 02:48:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:36,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474584028] [2023-08-29 02:48:36,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474584028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:36,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:48:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129894599] [2023-08-29 02:48:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:48:36,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:36,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:48:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:48:36,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 430 [2023-08-29 02:48:36,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 355 flow. Second operand has 2 states, 2 states have (on average 259.0) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:36,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:36,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 430 [2023-08-29 02:48:36,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:47,892 INFO L130 PetriNetUnfolder]: 68292/139119 cut-off events. [2023-08-29 02:48:47,893 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2023-08-29 02:48:48,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234360 conditions, 139119 events. 68292/139119 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2871. Compared 1602792 event pairs, 68292 based on Foata normal form. 9729/138781 useless extension candidates. Maximal degree in co-relation 125943. Up to 94472 conditions per place. [2023-08-29 02:48:48,751 INFO L137 encePairwiseOnDemand]: 408/430 looper letters, 50 selfloop transitions, 0 changer transitions 0/145 dead transitions. [2023-08-29 02:48:48,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 411 flow [2023-08-29 02:48:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:48:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:48:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 588 transitions. [2023-08-29 02:48:48,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2023-08-29 02:48:48,753 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 588 transitions. [2023-08-29 02:48:48,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 588 transitions. [2023-08-29 02:48:48,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:48,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 588 transitions. [2023-08-29 02:48:48,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:48,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:48,756 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:48,756 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 355 flow. Second operand 2 states and 588 transitions. [2023-08-29 02:48:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 411 flow [2023-08-29 02:48:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 145 transitions, 405 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:48,759 INFO L231 Difference]: Finished difference. Result has 153 places, 145 transitions, 305 flow [2023-08-29 02:48:48,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=305, PETRI_PLACES=153, PETRI_TRANSITIONS=145} [2023-08-29 02:48:48,760 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -1 predicate places. [2023-08-29 02:48:48,760 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 145 transitions, 305 flow [2023-08-29 02:48:48,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.0) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:48,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:48,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:48:48,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:48:48,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:48:48,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1657821, now seen corresponding path program 1 times [2023-08-29 02:48:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4012402] [2023-08-29 02:48:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:48,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:48,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4012402] [2023-08-29 02:48:48,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4012402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:48,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:48:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306769408] [2023-08-29 02:48:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:48:48,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 430 [2023-08-29 02:48:48,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 145 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:48,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:48,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 430 [2023-08-29 02:48:48,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:59,966 INFO L130 PetriNetUnfolder]: 68292/144634 cut-off events. [2023-08-29 02:48:59,967 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-29 02:49:00,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239703 conditions, 144634 events. 68292/144634 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2979. Compared 1728349 event pairs, 44148 based on Foata normal form. 0/135058 useless extension candidates. Maximal degree in co-relation 239697. Up to 94449 conditions per place. [2023-08-29 02:49:00,804 INFO L137 encePairwiseOnDemand]: 427/430 looper letters, 62 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2023-08-29 02:49:00,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 159 transitions, 461 flow [2023-08-29 02:49:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:49:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:49:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-29 02:49:00,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410852713178294 [2023-08-29 02:49:00,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-29 02:49:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-29 02:49:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:49:00,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-29 02:49:00,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:00,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:00,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:00,811 INFO L175 Difference]: Start difference. First operand has 153 places, 145 transitions, 305 flow. Second operand 3 states and 827 transitions. [2023-08-29 02:49:00,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 159 transitions, 461 flow [2023-08-29 02:49:00,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 159 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:49:00,814 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 317 flow [2023-08-29 02:49:00,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2023-08-29 02:49:00,815 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 2 predicate places. [2023-08-29 02:49:00,815 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 317 flow [2023-08-29 02:49:00,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:00,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:49:00,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:49:00,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:49:00,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:49:00,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:49:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -941267569, now seen corresponding path program 1 times [2023-08-29 02:49:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:49:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544192079] [2023-08-29 02:49:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:49:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:49:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:49:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:49:00,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:49:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544192079] [2023-08-29 02:49:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544192079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:49:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094264000] [2023-08-29 02:49:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:49:00,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:49:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:49:00,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:49:00,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 02:49:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:49:01,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:49:01,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:49:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:49:01,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:49:01,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094264000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:49:01,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:49:01,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:49:01,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810861897] [2023-08-29 02:49:01,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:49:01,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:49:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:49:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:49:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:49:01,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 430 [2023-08-29 02:49:01,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:01,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:49:01,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 430 [2023-08-29 02:49:01,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:49:19,316 INFO L130 PetriNetUnfolder]: 136251/246669 cut-off events. [2023-08-29 02:49:19,316 INFO L131 PetriNetUnfolder]: For 10129/10129 co-relation queries the response was YES. [2023-08-29 02:49:20,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444139 conditions, 246669 events. 136251/246669 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 4433. Compared 2660667 event pairs, 109105 based on Foata normal form. 0/238327 useless extension candidates. Maximal degree in co-relation 444131. Up to 187158 conditions per place. [2023-08-29 02:49:20,848 INFO L137 encePairwiseOnDemand]: 419/430 looper letters, 70 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-08-29 02:49:20,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 152 transitions, 494 flow [2023-08-29 02:49:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:49:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:49:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-08-29 02:49:20,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124031007751938 [2023-08-29 02:49:20,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-08-29 02:49:20,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-08-29 02:49:20,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:49:20,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-08-29 02:49:20,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:20,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:20,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 430.0) internal successors, (1720), 4 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:20,855 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 317 flow. Second operand 3 states and 790 transitions. [2023-08-29 02:49:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 152 transitions, 494 flow [2023-08-29 02:49:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:49:20,858 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 331 flow [2023-08-29 02:49:20,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=430, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2023-08-29 02:49:20,859 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -3 predicate places. [2023-08-29 02:49:20,859 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 331 flow [2023-08-29 02:49:20,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:20,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:49:20,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:49:20,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 02:49:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:49:21,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:49:21,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:49:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1598780622, now seen corresponding path program 1 times [2023-08-29 02:49:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:49:21,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811557674] [2023-08-29 02:49:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:49:21,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:49:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:49:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:49:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:49:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811557674] [2023-08-29 02:49:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811557674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:49:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:49:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:49:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074390324] [2023-08-29 02:49:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:49:21,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:49:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:49:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:49:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:49:21,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 430 [2023-08-29 02:49:21,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:49:21,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:49:21,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 430 [2023-08-29 02:49:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand