./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:28:16,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:28:16,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:28:16,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:28:16,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:28:16,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:28:16,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:28:16,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:28:16,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:28:16,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:28:16,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:28:16,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:28:16,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:28:16,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:28:16,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:28:16,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:28:16,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:28:16,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:28:16,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:28:16,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:28:16,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:28:16,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:28:16,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:28:16,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:28:16,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:28:16,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:28:16,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:28:16,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:28:16,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:28:16,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:28:16,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:28:16,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:28:16,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:28:16,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:28:16,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:28:16,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:28:16,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:28:16,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:28:16,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:28:16,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:28:16,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:28:16,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:28:16,863 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:28:16,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:28:16,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:28:16,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:28:16,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:28:16,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:28:16,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:28:16,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:28:16,866 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:28:16,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:28:16,867 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:28:16,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:28:16,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:28:16,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:28:16,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:28:16,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:28:16,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:28:16,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:28:16,869 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:28:16,869 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:28:16,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:28:16,870 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:28:16,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:28:16,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:28:16,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:28:16,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:28:16,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:16,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:28:16,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:28:16,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:28:16,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:28:16,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:28:16,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:28:16,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:28:16,873 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:28:16,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:28:16,873 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:28:16,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:28:17,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:28:17,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:28:17,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:28:17,204 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:28:17,204 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:28:17,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-29 18:28:18,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:28:18,719 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:28:18,720 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-08-29 18:28:18,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346936ccc/e154de92b6614481802c0f419c34c432/FLAG9eddaf1b9 [2023-08-29 18:28:18,745 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/346936ccc/e154de92b6614481802c0f419c34c432 [2023-08-29 18:28:18,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:28:18,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:28:18,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:18,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:28:18,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:28:18,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:18" (1/1) ... [2023-08-29 18:28:18,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d550b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:18, skipping insertion in model container [2023-08-29 18:28:18,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:28:18" (1/1) ... [2023-08-29 18:28:18,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:28:18,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:28:19,138 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_76-tricky_address3_racefree.i[41323,41336] [2023-08-29 18:28:19,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:19,201 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:28:19,236 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_76-tricky_address3_racefree.i[41323,41336] [2023-08-29 18:28:19,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:28:19,328 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:28:19,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19 WrapperNode [2023-08-29 18:28:19,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:28:19,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:19,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:28:19,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:28:19,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,407 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 256 [2023-08-29 18:28:19,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:28:19,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:28:19,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:28:19,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:28:19,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:28:19,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:28:19,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:28:19,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:28:19,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (1/1) ... [2023-08-29 18:28:19,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:28:19,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:19,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:28:19,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:28:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:28:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:28:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:28:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:28:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:28:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:28:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:28:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:28:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:28:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:28:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:28:19,560 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:28:19,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:28:19,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:28:20,104 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:28:20,111 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:28:20,111 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 18:28:20,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:20 BoogieIcfgContainer [2023-08-29 18:28:20,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:28:20,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:28:20,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:28:20,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:28:20,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:28:18" (1/3) ... [2023-08-29 18:28:20,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc064b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:20, skipping insertion in model container [2023-08-29 18:28:20,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:28:19" (2/3) ... [2023-08-29 18:28:20,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc064b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:20, skipping insertion in model container [2023-08-29 18:28:20,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:20" (3/3) ... [2023-08-29 18:28:20,124 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-08-29 18:28:20,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:28:20,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:28:20,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:28:20,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:28:20,272 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:28:20,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,405 INFO L130 PetriNetUnfolder]: 45/374 cut-off events. [2023-08-29 18:28:20,406 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:28:20,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 374 events. 45/374 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1491 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-08-29 18:28:20,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:20,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 265 transitions, 538 flow [2023-08-29 18:28:20,496 INFO L130 PetriNetUnfolder]: 45/374 cut-off events. [2023-08-29 18:28:20,497 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:28:20,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 374 events. 45/374 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1491 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 218. Up to 8 conditions per place. [2023-08-29 18:28:20,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 23920 [2023-08-29 18:28:23,437 INFO L134 LiptonReduction]: Checked pairs total: 95023 [2023-08-29 18:28:23,440 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-29 18:28:23,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:23,474 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;@5ec88436, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:23,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:28:23,483 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-29 18:28:23,483 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:28:23,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:23,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:28:23,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:23,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2490206, now seen corresponding path program 1 times [2023-08-29 18:28:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350979515] [2023-08-29 18:28:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:23,738 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 18:28:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350979515] [2023-08-29 18:28:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350979515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:23,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:23,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483928148] [2023-08-29 18:28:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:23,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:23,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 428 [2023-08-29 18:28:23,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:23,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:23,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 428 [2023-08-29 18:28:23,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:24,057 INFO L130 PetriNetUnfolder]: 399/1539 cut-off events. [2023-08-29 18:28:24,058 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2023-08-29 18:28:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1539 events. 399/1539 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10819 event pairs, 357 based on Foata normal form. 160/1537 useless extension candidates. Maximal degree in co-relation 2226. Up to 779 conditions per place. [2023-08-29 18:28:24,067 INFO L137 encePairwiseOnDemand]: 404/428 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 18:28:24,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-29 18:28:24,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589563862928349 [2023-08-29 18:28:24,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-29 18:28:24,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-29 18:28:24,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:24,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-29 18:28:24,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 428.0) internal successors, (1712), 4 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,108 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 272 flow. Second operand 3 states and 757 transitions. [2023-08-29 18:28:24,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:24,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:24,118 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:24,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-08-29 18:28:24,124 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-29 18:28:24,124 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:24,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:24,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:28:24,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:24,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1899965582, now seen corresponding path program 1 times [2023-08-29 18:28:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158066173] [2023-08-29 18:28:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:24,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158066173] [2023-08-29 18:28:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158066173] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640398019] [2023-08-29 18:28:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:24,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:24,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:24,225 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 18:28:24,247 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 18:28:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:24,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:24,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:24,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640398019] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:24,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:24,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:24,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932227261] [2023-08-29 18:28:24,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:24,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:24,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 428 [2023-08-29 18:28:24,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:24,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 428 [2023-08-29 18:28:24,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:24,691 INFO L130 PetriNetUnfolder]: 399/1542 cut-off events. [2023-08-29 18:28:24,691 INFO L131 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2023-08-29 18:28:24,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 1542 events. 399/1542 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10871 event pairs, 357 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 2330. Up to 779 conditions per place. [2023-08-29 18:28:24,699 INFO L137 encePairwiseOnDemand]: 425/428 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-29 18:28:24,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1425 transitions. [2023-08-29 18:28:24,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5549065420560748 [2023-08-29 18:28:24,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1425 transitions. [2023-08-29 18:28:24,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1425 transitions. [2023-08-29 18:28:24,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:24,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1425 transitions. [2023-08-29 18:28:24,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 428.0) internal successors, (2996), 7 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,712 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 428.0) internal successors, (2996), 7 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,713 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1425 transitions. [2023-08-29 18:28:24,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:24,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:24,717 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:24,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-08-29 18:28:24,718 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-08-29 18:28:24,718 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:24,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 230.57142857142858) internal successors, (1614), 7 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:24,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:24,720 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:24,732 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 18:28:24,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:24,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:24,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash 977560670, now seen corresponding path program 2 times [2023-08-29 18:28:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:24,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962973687] [2023-08-29 18:28:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962973687] [2023-08-29 18:28:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962973687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303682444] [2023-08-29 18:28:25,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:25,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:25,078 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 18:28:25,101 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 18:28:25,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:25,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:25,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:25,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:25,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303682444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:25,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:25,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136693389] [2023-08-29 18:28:25,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:25,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 428 [2023-08-29 18:28:25,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 230.30769230769232) internal successors, (2994), 13 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:25,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:25,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 428 [2023-08-29 18:28:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:25,522 INFO L130 PetriNetUnfolder]: 399/1548 cut-off events. [2023-08-29 18:28:25,523 INFO L131 PetriNetUnfolder]: For 24/25 co-relation queries the response was YES. [2023-08-29 18:28:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 1548 events. 399/1548 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10818 event pairs, 357 based on Foata normal form. 6/1393 useless extension candidates. Maximal degree in co-relation 2321. Up to 779 conditions per place. [2023-08-29 18:28:25,530 INFO L137 encePairwiseOnDemand]: 425/428 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-08-29 18:28:25,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2808 transitions. [2023-08-29 18:28:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467289719626168 [2023-08-29 18:28:25,537 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2808 transitions. [2023-08-29 18:28:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2808 transitions. [2023-08-29 18:28:25,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:25,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2808 transitions. [2023-08-29 18:28:25,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 234.0) internal successors, (2808), 12 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:25,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 428.0) internal successors, (5564), 13 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:25,556 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 428.0) internal successors, (5564), 13 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:25,556 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2808 transitions. [2023-08-29 18:28:25,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:25,562 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:25,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=428, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-08-29 18:28:25,564 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-08-29 18:28:25,564 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 230.30769230769232) internal successors, (2994), 13 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:25,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:25,569 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:25,576 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 18:28:25,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 18:28:25,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:25,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2137502754, now seen corresponding path program 3 times [2023-08-29 18:28:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557458062] [2023-08-29 18:28:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:25,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:25,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:25,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:25,864 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:25,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:28:25,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:28:25,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:28:25,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:28:25,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:28:25,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:28:25,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:28:25,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:28:25,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:28:25,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:28:25,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:28:25,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:28:25,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:28:25,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:28:25,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:28:25,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:28:25,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:28:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:28:25,873 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:28:25,876 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:25,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:28:25,924 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:28:25,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,030 INFO L130 PetriNetUnfolder]: 75/619 cut-off events. [2023-08-29 18:28:26,030 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-29 18:28:26,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 619 events. 75/619 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3067 event pairs, 0 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2023-08-29 18:28:26,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:26,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 371 transitions, 760 flow [2023-08-29 18:28:26,126 INFO L130 PetriNetUnfolder]: 75/619 cut-off events. [2023-08-29 18:28:26,126 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-29 18:28:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 619 events. 75/619 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3067 event pairs, 0 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2023-08-29 18:28:26,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 71760 [2023-08-29 18:28:29,639 INFO L134 LiptonReduction]: Checked pairs total: 285766 [2023-08-29 18:28:29,640 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-29 18:28:29,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:29,642 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;@5ec88436, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:29,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:28:29,647 INFO L130 PetriNetUnfolder]: 14/73 cut-off events. [2023-08-29 18:28:29,647 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:29,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:29,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:29,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:29,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1381707071, now seen corresponding path program 1 times [2023-08-29 18:28:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:29,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284877942] [2023-08-29 18:28:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284877942] [2023-08-29 18:28:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284877942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:29,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:29,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916824515] [2023-08-29 18:28:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:29,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:29,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:29,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 595 [2023-08-29 18:28:29,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 194 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:29,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:29,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 595 [2023-08-29 18:28:29,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:32,842 INFO L130 PetriNetUnfolder]: 14691/34656 cut-off events. [2023-08-29 18:28:32,842 INFO L131 PetriNetUnfolder]: For 206/278 co-relation queries the response was YES. [2023-08-29 18:28:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56033 conditions, 34656 events. 14691/34656 cut-off events. For 206/278 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 372716 event pairs, 13600 based on Foata normal form. 4486/35914 useless extension candidates. Maximal degree in co-relation 20584. Up to 21259 conditions per place. [2023-08-29 18:28:33,066 INFO L137 encePairwiseOnDemand]: 560/595 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-29 18:28:33,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-08-29 18:28:33,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938375350140056 [2023-08-29 18:28:33,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-08-29 18:28:33,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-08-29 18:28:33,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:33,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-08-29 18:28:33,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:33,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:33,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:33,076 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 406 flow. Second operand 3 states and 1060 transitions. [2023-08-29 18:28:33,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:33,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:33,083 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:33,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-08-29 18:28:33,085 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 18:28:33,086 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:33,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:33,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:33,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:33,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:28:33,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:33,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash 892254629, now seen corresponding path program 1 times [2023-08-29 18:28:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667431669] [2023-08-29 18:28:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:33,139 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 18:28:33,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667431669] [2023-08-29 18:28:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667431669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617422601] [2023-08-29 18:28:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:33,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:33,145 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 18:28:33,169 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 18:28:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:33,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:28:33,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:33,233 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 18:28:33,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:28:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617422601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:28:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:28:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546661219] [2023-08-29 18:28:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:33,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:33,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:28:33,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 595 [2023-08-29 18:28:33,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:33,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:33,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 595 [2023-08-29 18:28:33,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:35,865 INFO L130 PetriNetUnfolder]: 14345/34778 cut-off events. [2023-08-29 18:28:35,865 INFO L131 PetriNetUnfolder]: For 188/226 co-relation queries the response was YES. [2023-08-29 18:28:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56161 conditions, 34778 events. 14345/34778 cut-off events. For 188/226 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 382463 event pairs, 6494 based on Foata normal form. 0/31503 useless extension candidates. Maximal degree in co-relation 56148. Up to 21223 conditions per place. [2023-08-29 18:28:36,051 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-08-29 18:28:36,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1046 transitions. [2023-08-29 18:28:36,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859943977591037 [2023-08-29 18:28:36,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1046 transitions. [2023-08-29 18:28:36,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1046 transitions. [2023-08-29 18:28:36,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:36,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1046 transitions. [2023-08-29 18:28:36,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:36,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:36,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:36,063 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1046 transitions. [2023-08-29 18:28:36,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:36,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:36,068 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:36,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-08-29 18:28:36,072 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-08-29 18:28:36,072 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:36,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:36,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:36,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:36,082 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 18:28:36,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:36,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:36,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1032659485, now seen corresponding path program 1 times [2023-08-29 18:28:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:36,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563058697] [2023-08-29 18:28:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:36,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563058697] [2023-08-29 18:28:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563058697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096834325] [2023-08-29 18:28:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:36,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:36,327 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 18:28:36,330 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 18:28:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:36,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:36,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:36,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096834325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:36,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:36,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326069965] [2023-08-29 18:28:36,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:36,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 595 [2023-08-29 18:28:36,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:36,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:36,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 595 [2023-08-29 18:28:36,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:39,160 INFO L130 PetriNetUnfolder]: 14723/35024 cut-off events. [2023-08-29 18:28:39,160 INFO L131 PetriNetUnfolder]: For 870/885 co-relation queries the response was YES. [2023-08-29 18:28:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57099 conditions, 35024 events. 14723/35024 cut-off events. For 870/885 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 379412 event pairs, 13600 based on Foata normal form. 3/32050 useless extension candidates. Maximal degree in co-relation 57071. Up to 21242 conditions per place. [2023-08-29 18:28:39,307 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-29 18:28:39,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1990 transitions. [2023-08-29 18:28:39,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574229691876751 [2023-08-29 18:28:39,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1990 transitions. [2023-08-29 18:28:39,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1990 transitions. [2023-08-29 18:28:39,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:39,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1990 transitions. [2023-08-29 18:28:39,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:39,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:39,327 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:39,327 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 1990 transitions. [2023-08-29 18:28:39,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:39,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:39,331 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:39,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-08-29 18:28:39,333 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-08-29 18:28:39,333 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:39,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:39,335 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:39,343 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 18:28:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:39,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:39,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1747093071, now seen corresponding path program 2 times [2023-08-29 18:28:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877926236] [2023-08-29 18:28:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877926236] [2023-08-29 18:28:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877926236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141089268] [2023-08-29 18:28:39,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:39,644 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 18:28:39,646 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 18:28:39,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:39,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:39,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:39,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:39,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141089268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:39,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:39,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129394478] [2023-08-29 18:28:39,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:39,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:39,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:39,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 595 [2023-08-29 18:28:39,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 321.38461538461536) internal successors, (4178), 13 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:39,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:39,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 595 [2023-08-29 18:28:39,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:42,614 INFO L130 PetriNetUnfolder]: 14723/35030 cut-off events. [2023-08-29 18:28:42,615 INFO L131 PetriNetUnfolder]: For 904/919 co-relation queries the response was YES. [2023-08-29 18:28:42,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57120 conditions, 35030 events. 14723/35030 cut-off events. For 904/919 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 379156 event pairs, 13600 based on Foata normal form. 6/32059 useless extension candidates. Maximal degree in co-relation 57060. Up to 21242 conditions per place. [2023-08-29 18:28:42,792 INFO L137 encePairwiseOnDemand]: 592/595 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-08-29 18:28:42,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3919 transitions. [2023-08-29 18:28:42,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488795518207283 [2023-08-29 18:28:42,802 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3919 transitions. [2023-08-29 18:28:42,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3919 transitions. [2023-08-29 18:28:42,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:42,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3919 transitions. [2023-08-29 18:28:42,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 326.5833333333333) internal successors, (3919), 12 states have internal predecessors, (3919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:42,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 595.0) internal successors, (7735), 13 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:42,832 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 595.0) internal successors, (7735), 13 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:42,832 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3919 transitions. [2023-08-29 18:28:42,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:42,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:42,838 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:42,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-08-29 18:28:42,839 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-08-29 18:28:42,839 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:42,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 321.38461538461536) internal successors, (4178), 13 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:42,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:42,841 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:42,846 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 18:28:43,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:43,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:43,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1259707855, now seen corresponding path program 3 times [2023-08-29 18:28:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:43,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245889886] [2023-08-29 18:28:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:43,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:43,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:43,115 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:43,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:28:43,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:28:43,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:28:43,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:28:43,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:28:43,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:28:43,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:28:43,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:28:43,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:28:43,118 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:28:43,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:28:43,119 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:28:43,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:28:43,119 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:28:43,120 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:43,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:28:43,177 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:28:43,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,344 INFO L130 PetriNetUnfolder]: 110/907 cut-off events. [2023-08-29 18:28:43,345 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-29 18:28:43,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 907 events. 110/907 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4958 event pairs, 1 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 627. Up to 16 conditions per place. [2023-08-29 18:28:43,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:43,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,380 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 477 transitions, 984 flow [2023-08-29 18:28:43,513 INFO L130 PetriNetUnfolder]: 110/907 cut-off events. [2023-08-29 18:28:43,514 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-29 18:28:43,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 907 events. 110/907 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4958 event pairs, 1 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 627. Up to 16 conditions per place. [2023-08-29 18:28:43,583 INFO L119 LiptonReduction]: Number of co-enabled transitions 141024 [2023-08-29 18:28:47,577 INFO L134 LiptonReduction]: Checked pairs total: 564994 [2023-08-29 18:28:47,577 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-08-29 18:28:47,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:47,579 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;@5ec88436, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:47,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:28:47,591 INFO L130 PetriNetUnfolder]: 15/85 cut-off events. [2023-08-29 18:28:47,591 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:47,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:47,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:47,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:28:47,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1889808579, now seen corresponding path program 1 times [2023-08-29 18:28:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:47,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632432280] [2023-08-29 18:28:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632432280] [2023-08-29 18:28:47,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632432280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:47,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:47,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289188539] [2023-08-29 18:28:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:47,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:47,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 767 [2023-08-29 18:28:47,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 251 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:47,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:47,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 767 [2023-08-29 18:28:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:51,338 INFO L130 PetriNetUnfolder]: 403445/757641 cut-off events. [2023-08-29 18:29:51,338 INFO L131 PetriNetUnfolder]: For 5874/7267 co-relation queries the response was YES. [2023-08-29 18:29:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276847 conditions, 757641 events. 403445/757641 cut-off events. For 5874/7267 co-relation queries the response was YES. Maximal size of possible extension queue 15346. Compared 9849779 event pairs, 377214 based on Foata normal form. 100370/788780 useless extension candidates. Maximal degree in co-relation 226808. Up to 516526 conditions per place. [2023-08-29 18:29:57,283 INFO L137 encePairwiseOnDemand]: 724/767 looper letters, 81 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-29 18:29:57,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 212 transitions, 620 flow [2023-08-29 18:29:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:29:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:29:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1360 transitions. [2023-08-29 18:29:57,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910473707083876 [2023-08-29 18:29:57,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1360 transitions. [2023-08-29 18:29:57,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1360 transitions. [2023-08-29 18:29:57,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:57,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1360 transitions. [2023-08-29 18:29:57,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 453.3333333333333) internal successors, (1360), 3 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,294 INFO L175 Difference]: Start difference. First operand has 210 places, 251 transitions, 532 flow. Second operand 3 states and 1360 transitions. [2023-08-29 18:29:57,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 212 transitions, 620 flow [2023-08-29 18:29:57,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 212 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:29:57,300 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 464 flow [2023-08-29 18:29:57,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2023-08-29 18:29:57,301 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 3 predicate places. [2023-08-29 18:29:57,302 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 464 flow [2023-08-29 18:29:57,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:57,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:57,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:29:57,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:29:57,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:57,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1550021488, now seen corresponding path program 1 times [2023-08-29 18:29:57,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:57,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438993683] [2023-08-29 18:29:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:57,338 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 18:29:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438993683] [2023-08-29 18:29:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438993683] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:29:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149997661] [2023-08-29 18:29:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:57,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:29:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:29:57,345 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 18:29:57,346 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 18:29:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:29:57,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:29:57,435 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 18:29:57,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:29:57,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149997661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:57,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:29:57,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:29:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142148561] [2023-08-29 18:29:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:57,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:29:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:29:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:29:57,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 767 [2023-08-29 18:29:57,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:57,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:57,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 767 [2023-08-29 18:29:57,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:31:00,371 INFO L130 PetriNetUnfolder]: 404148/762719 cut-off events. [2023-08-29 18:31:00,371 INFO L131 PetriNetUnfolder]: For 5896/6615 co-relation queries the response was YES. [2023-08-29 18:31:03,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281915 conditions, 762719 events. 404148/762719 cut-off events. For 5896/6615 co-relation queries the response was YES. Maximal size of possible extension queue 15518. Compared 9982428 event pairs, 339022 based on Foata normal form. 0/692949 useless extension candidates. Maximal degree in co-relation 1281901. Up to 516490 conditions per place. [2023-08-29 18:31:06,559 INFO L137 encePairwiseOnDemand]: 764/767 looper letters, 100 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-08-29 18:31:06,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 706 flow [2023-08-29 18:31:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:31:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:31:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-08-29 18:31:06,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814863102998696 [2023-08-29 18:31:06,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-08-29 18:31:06,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-08-29 18:31:06,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:31:06,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-08-29 18:31:06,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:06,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:06,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:06,570 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 464 flow. Second operand 3 states and 1338 transitions. [2023-08-29 18:31:06,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 706 flow [2023-08-29 18:31:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 231 transitions, 702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:31:06,576 INFO L231 Difference]: Finished difference. Result has 215 places, 213 transitions, 472 flow [2023-08-29 18:31:06,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=215, PETRI_TRANSITIONS=213} [2023-08-29 18:31:06,577 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 5 predicate places. [2023-08-29 18:31:06,577 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 213 transitions, 472 flow [2023-08-29 18:31:06,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:06,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:31:06,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:31:06,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 18:31:06,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:06,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:31:06,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:31:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1819851275, now seen corresponding path program 1 times [2023-08-29 18:31:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:31:06,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875077806] [2023-08-29 18:31:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:31:06,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:31:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:31:06,824 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 18:31:06,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:31:06,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875077806] [2023-08-29 18:31:06,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875077806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:31:06,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257115838] [2023-08-29 18:31:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:31:06,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:06,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:31:06,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:31:06,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 18:31:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:31:06,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:31:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:31:06,926 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 18:31:06,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:31:06,940 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 18:31:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257115838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:31:06,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:31:06,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:31:06,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771939855] [2023-08-29 18:31:06,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:31:06,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:31:06,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:31:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:31:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:31:06,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 767 [2023-08-29 18:31:06,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 213 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 412.85714285714283) internal successors, (2890), 7 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:06,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:31:06,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 767 [2023-08-29 18:31:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:32:14,012 INFO L130 PetriNetUnfolder]: 404127/759081 cut-off events. [2023-08-29 18:32:14,012 INFO L131 PetriNetUnfolder]: For 18149/19166 co-relation queries the response was YES. [2023-08-29 18:32:16,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290649 conditions, 759081 events. 404127/759081 cut-off events. For 18149/19166 co-relation queries the response was YES. Maximal size of possible extension queue 15446. Compared 9886838 event pairs, 377214 based on Foata normal form. 3/696462 useless extension candidates. Maximal degree in co-relation 1290620. Up to 516509 conditions per place. [2023-08-29 18:32:20,065 INFO L137 encePairwiseOnDemand]: 764/767 looper letters, 82 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2023-08-29 18:32:20,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 658 flow [2023-08-29 18:32:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:32:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:32:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2555 transitions. [2023-08-29 18:32:20,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555193394176445 [2023-08-29 18:32:20,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2555 transitions. [2023-08-29 18:32:20,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2555 transitions. [2023-08-29 18:32:20,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:32:20,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2555 transitions. [2023-08-29 18:32:20,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 425.8333333333333) internal successors, (2555), 6 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:20,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:20,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 767.0) internal successors, (5369), 7 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:20,081 INFO L175 Difference]: Start difference. First operand has 215 places, 213 transitions, 472 flow. Second operand 6 states and 2555 transitions. [2023-08-29 18:32:20,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 658 flow [2023-08-29 18:32:20,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 216 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:32:20,100 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 506 flow [2023-08-29 18:32:20,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=767, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2023-08-29 18:32:20,100 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 12 predicate places. [2023-08-29 18:32:20,101 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 506 flow [2023-08-29 18:32:20,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.85714285714283) internal successors, (2890), 7 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:20,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:32:20,102 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:32:20,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 18:32:20,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:32:20,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:32:20,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:32:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -850986860, now seen corresponding path program 2 times [2023-08-29 18:32:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:32:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686108148] [2023-08-29 18:32:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:32:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:32:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:32:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:32:20,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:32:20,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686108148] [2023-08-29 18:32:20,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686108148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:32:20,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291644815] [2023-08-29 18:32:20,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:32:20,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:32:20,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:32:20,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:32:20,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 18:32:20,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:32:20,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:32:20,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:32:20,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:32:20,503 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 18:32:20,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-29 18:32:20,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:32:20,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-08-29 18:32:20,588 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:32:20,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-08-29 18:32:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 18:32:20,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:32:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291644815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:32:20,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:32:20,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 18:32:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173733395] [2023-08-29 18:32:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:32:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:32:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:32:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:32:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 18:32:21,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 767 [2023-08-29 18:32:21,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 365.1666666666667) internal successors, (2191), 6 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:32:21,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:32:21,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 767 [2023-08-29 18:32:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand