./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.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/pthread-ext/39_rand_lock_p0_vs.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 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --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 09:36:06,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:36:06,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:36:06,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:36:06,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:36:06,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:36:06,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:36:06,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:36:06,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:36:06,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:36:06,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:36:06,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:36:06,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:36:06,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:36:06,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:36:06,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:36:06,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:36:06,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:36:06,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:36:06,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:36:06,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:36:06,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:36:06,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:36:06,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:36:06,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:36:06,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:36:06,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:36:06,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:36:06,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:36:06,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:36:06,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:36:06,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:36:06,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:36:06,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:36:06,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:36:06,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:36:06,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:36:06,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:36:06,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:36:06,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:36:06,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:36:06,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:36:06,823 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:36:06,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:36:06,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:36:06,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:36:06,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:36:06,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:36:06,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:36:06,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:36:06,825 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:36:06,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:36:06,826 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:36:06,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:36:06,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:36:06,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:36:06,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:36:06,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:36:06,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:36:06,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:36:06,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:36:06,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:36:06,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:36:06,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:36:06,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:36:06,829 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:36:06,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:36:07,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:36:07,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:36:07,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:36:07,089 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:36:07,093 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:36:07,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-29 09:36:08,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:36:08,282 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:36:08,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-29 09:36:08,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9ade8dc/dfc48c6c4493478387997df36fcb3e89/FLAG1773ecfce [2023-08-29 09:36:08,301 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9ade8dc/dfc48c6c4493478387997df36fcb3e89 [2023-08-29 09:36:08,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:36:08,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:36:08,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:36:08,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:36:08,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:36:08,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a74febf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08, skipping insertion in model container [2023-08-29 09:36:08,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:36:08,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:36:08,426 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 09:36:08,494 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-29 09:36:08,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:36:08,503 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:36:08,512 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 09:36:08,525 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-29 09:36:08,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:36:08,552 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:36:08,552 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:36:08,553 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:36:08,557 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:36:08,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08 WrapperNode [2023-08-29 09:36:08,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:36:08,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:36:08,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:36:08,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:36:08,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,589 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-08-29 09:36:08,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:36:08,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:36:08,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:36:08,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:36:08,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,627 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:36:08,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:36:08,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:36:08,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:36:08,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (1/1) ... [2023-08-29 09:36:08,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:36:08,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:36:08,658 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 09:36:08,667 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 09:36:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:36:08,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:36:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 09:36:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:36:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:36:08,690 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 09:36:08,810 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:36:08,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:36:08,965 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:36:09,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:36:09,012 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 09:36:09,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:36:09 BoogieIcfgContainer [2023-08-29 09:36:09,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:36:09,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:36:09,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:36:09,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:36:09,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:36:08" (1/3) ... [2023-08-29 09:36:09,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7855fd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:36:09, skipping insertion in model container [2023-08-29 09:36:09,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:08" (2/3) ... [2023-08-29 09:36:09,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7855fd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:36:09, skipping insertion in model container [2023-08-29 09:36:09,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:36:09" (3/3) ... [2023-08-29 09:36:09,020 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2023-08-29 09:36:09,025 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:36:09,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:36:09,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-29 09:36:09,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:36:09,076 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:09,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,123 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-29 09:36:09,128 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-29 09:36:09,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,140 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:09,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-29 09:36:09,161 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-29 09:36:09,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:09,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-29 09:36:09,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 1144 [2023-08-29 09:36:10,671 INFO L134 LiptonReduction]: Checked pairs total: 1059 [2023-08-29 09:36:10,671 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-29 09:36:10,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:10,684 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:10,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 09:36:10,686 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:10,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:10,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:10,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:10,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-29 09:36:10,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash 12440232, now seen corresponding path program 1 times [2023-08-29 09:36:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151325683] [2023-08-29 09:36:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:10,786 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 09:36:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151325683] [2023-08-29 09:36:10,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151325683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:10,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:10,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029790296] [2023-08-29 09:36:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:10,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:10,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:10,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 149 [2023-08-29 09:36:10,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 37 flow. Second operand has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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 09:36:10,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:10,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 149 [2023-08-29 09:36:10,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:10,844 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-29 09:36:10,844 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:10,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-29 09:36:10,846 INFO L137 encePairwiseOnDemand]: 141/149 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-08-29 09:36:10,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-29 09:36:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2023-08-29 09:36:10,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261744966442953 [2023-08-29 09:36:10,856 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 127 transitions. [2023-08-29 09:36:10,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 127 transitions. [2023-08-29 09:36:10,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:10,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 127 transitions. [2023-08-29 09:36:10,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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 09:36:10,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 09:36:10,865 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 09:36:10,866 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 37 flow. Second operand 2 states and 127 transitions. [2023-08-29 09:36:10,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-29 09:36:10,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:10,868 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 21 flow [2023-08-29 09:36:10,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=21, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-08-29 09:36:10,872 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2023-08-29 09:36:10,873 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 21 flow [2023-08-29 09:36:10,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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 09:36:10,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:10,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 09:36:10,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:36:10,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-29 09:36:10,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash -929879711, now seen corresponding path program 1 times [2023-08-29 09:36:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284005955] [2023-08-29 09:36:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:10,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:10,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:10,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:10,917 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:10,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-29 09:36:10,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-29 09:36:10,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-29 09:36:10,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-29 09:36:10,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-29 09:36:10,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-29 09:36:10,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-29 09:36:10,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-29 09:36:10,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-29 09:36:10,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-08-29 09:36:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-29 09:36:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-29 09:36:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-29 09:36:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-29 09:36:10,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-29 09:36:10,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:36:10,923 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:36:10,924 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:10,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:36:10,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:10,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,957 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-29 09:36:10,957 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:36:10,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-29 09:36:10,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:10,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-29 09:36:10,973 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-29 09:36:10,973 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:36:10,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-29 09:36:10,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 6248 [2023-08-29 09:36:12,386 INFO L134 LiptonReduction]: Checked pairs total: 11448 [2023-08-29 09:36:12,386 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-29 09:36:12,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:12,388 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:12,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 09:36:12,389 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:12,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:12,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:12,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:12,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 09:36:12,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash 20639438, now seen corresponding path program 1 times [2023-08-29 09:36:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560332598] [2023-08-29 09:36:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:12,410 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 09:36:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560332598] [2023-08-29 09:36:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560332598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427561309] [2023-08-29 09:36:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:12,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:12,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:12,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 222 [2023-08-29 09:36:12,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 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 09:36:12,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:12,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 222 [2023-08-29 09:36:12,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:12,474 INFO L130 PetriNetUnfolder]: 121/251 cut-off events. [2023-08-29 09:36:12,474 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 09:36:12,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 251 events. 121/251 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1057 event pairs, 95 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 188. Up to 208 conditions per place. [2023-08-29 09:36:12,479 INFO L137 encePairwiseOnDemand]: 209/222 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-29 09:36:12,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 94 flow [2023-08-29 09:36:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 207 transitions. [2023-08-29 09:36:12,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2023-08-29 09:36:12,484 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 207 transitions. [2023-08-29 09:36:12,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 207 transitions. [2023-08-29 09:36:12,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:12,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 207 transitions. [2023-08-29 09:36:12,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 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 09:36:12,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 09:36:12,492 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 09:36:12,492 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 88 flow. Second operand 2 states and 207 transitions. [2023-08-29 09:36:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 94 flow [2023-08-29 09:36:12,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 92 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:12,493 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2023-08-29 09:36:12,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-29 09:36:12,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -12 predicate places. [2023-08-29 09:36:12,495 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2023-08-29 09:36:12,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 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 09:36:12,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:12,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:36:12,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 09:36:12,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash 689644844, now seen corresponding path program 1 times [2023-08-29 09:36:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698975235] [2023-08-29 09:36:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:12,560 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 09:36:12,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698975235] [2023-08-29 09:36:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698975235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:12,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:12,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88618927] [2023-08-29 09:36:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:12,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:12,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 222 [2023-08-29 09:36:12,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 09:36:12,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:12,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 222 [2023-08-29 09:36:12,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:12,640 INFO L130 PetriNetUnfolder]: 265/467 cut-off events. [2023-08-29 09:36:12,640 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-29 09:36:12,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 467 events. 265/467 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2176 event pairs, 88 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 954. Up to 305 conditions per place. [2023-08-29 09:36:12,642 INFO L137 encePairwiseOnDemand]: 212/222 looper letters, 32 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-08-29 09:36:12,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 181 flow [2023-08-29 09:36:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-29 09:36:12,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2023-08-29 09:36:12,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-29 09:36:12,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-29 09:36:12,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:12,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-29 09:36:12,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 09:36:12,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 09:36:12,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 09:36:12,650 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 3 states and 291 transitions. [2023-08-29 09:36:12,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 181 flow [2023-08-29 09:36:12,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:12,652 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 128 flow [2023-08-29 09:36:12,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-08-29 09:36:12,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-08-29 09:36:12,653 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 128 flow [2023-08-29 09:36:12,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 09:36:12,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:12,654 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 09:36:12,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:36:12,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 09:36:12,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1570438884, now seen corresponding path program 1 times [2023-08-29 09:36:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:12,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844403158] [2023-08-29 09:36:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:12,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:12,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:12,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:12,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 09:36:12,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 09:36:12,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 09:36:12,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 09:36:12,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 09:36:12,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 09:36:12,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:36:12,702 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 09:36:12,702 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:12,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:36:12,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:12,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,733 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-29 09:36:12,733 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:36:12,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-29 09:36:12,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,736 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:12,736 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-29 09:36:12,749 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-29 09:36:12,749 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:36:12,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-29 09:36:12,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 15312 [2023-08-29 09:36:14,642 INFO L134 LiptonReduction]: Checked pairs total: 30056 [2023-08-29 09:36:14,642 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-29 09:36:14,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:14,644 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:14,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-29 09:36:14,645 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:14,645 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:14,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:14,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:14,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 09:36:14,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:14,646 INFO L85 PathProgramCache]: Analyzing trace with hash 31078196, now seen corresponding path program 1 times [2023-08-29 09:36:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386174661] [2023-08-29 09:36:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:36:14,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:14,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386174661] [2023-08-29 09:36:14,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386174661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:14,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196848396] [2023-08-29 09:36:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:14,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:14,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:14,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 309 [2023-08-29 09:36:14,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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 09:36:14,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:14,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 309 [2023-08-29 09:36:14,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:14,839 INFO L130 PetriNetUnfolder]: 1237/2011 cut-off events. [2023-08-29 09:36:14,840 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2023-08-29 09:36:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4007 conditions, 2011 events. 1237/2011 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10800 event pairs, 995 based on Foata normal form. 0/1640 useless extension candidates. Maximal degree in co-relation 497. Up to 1756 conditions per place. [2023-08-29 09:36:14,848 INFO L137 encePairwiseOnDemand]: 290/309 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-29 09:36:14,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 137 flow [2023-08-29 09:36:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 286 transitions. [2023-08-29 09:36:14,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627831715210356 [2023-08-29 09:36:14,850 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 286 transitions. [2023-08-29 09:36:14,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 286 transitions. [2023-08-29 09:36:14,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:14,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 286 transitions. [2023-08-29 09:36:14,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 09:36:14,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:36:14,852 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:36:14,852 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 129 flow. Second operand 2 states and 286 transitions. [2023-08-29 09:36:14,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 137 flow [2023-08-29 09:36:14,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 131 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:14,856 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 85 flow [2023-08-29 09:36:14,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-29 09:36:14,858 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -18 predicate places. [2023-08-29 09:36:14,859 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 85 flow [2023-08-29 09:36:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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 09:36:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:14,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:14,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:36:14,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 09:36:14,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1861692846, now seen corresponding path program 1 times [2023-08-29 09:36:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876960894] [2023-08-29 09:36:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:14,890 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 09:36:14,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:14,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876960894] [2023-08-29 09:36:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876960894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:14,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:14,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491775548] [2023-08-29 09:36:14,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:14,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:14,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-29 09:36:14,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 09:36:14,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:14,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-29 09:36:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:15,308 INFO L130 PetriNetUnfolder]: 4617/6744 cut-off events. [2023-08-29 09:36:15,309 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-08-29 09:36:15,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13736 conditions, 6744 events. 4617/6744 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39301 event pairs, 1682 based on Foata normal form. 0/5875 useless extension candidates. Maximal degree in co-relation 13730. Up to 4247 conditions per place. [2023-08-29 09:36:15,335 INFO L137 encePairwiseOnDemand]: 294/309 looper letters, 47 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2023-08-29 09:36:15,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 267 flow [2023-08-29 09:36:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-29 09:36:15,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325782092772384 [2023-08-29 09:36:15,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-29 09:36:15,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-29 09:36:15,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:15,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-29 09:36:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 09:36:15,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 09:36:15,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 09:36:15,340 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 85 flow. Second operand 3 states and 401 transitions. [2023-08-29 09:36:15,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 267 flow [2023-08-29 09:36:15,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:15,342 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 187 flow [2023-08-29 09:36:15,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-29 09:36:15,343 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-08-29 09:36:15,343 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 187 flow [2023-08-29 09:36:15,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 09:36:15,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:15,344 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 09:36:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:36:15,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 09:36:15,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 92234103, now seen corresponding path program 1 times [2023-08-29 09:36:15,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:15,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53266610] [2023-08-29 09:36:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:15,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:15,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:15,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:15,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-29 09:36:15,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-08-29 09:36:15,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-08-29 09:36:15,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-08-29 09:36:15,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-08-29 09:36:15,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-08-29 09:36:15,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-08-29 09:36:15,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-08-29 09:36:15,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-08-29 09:36:15,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:36:15,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 09:36:15,377 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:15,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 09:36:15,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,420 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-29 09:36:15,420 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:36:15,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-29 09:36:15,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:15,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-29 09:36:15,461 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-29 09:36:15,461 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:36:15,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-29 09:36:15,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 28336 [2023-08-29 09:36:17,927 INFO L134 LiptonReduction]: Checked pairs total: 53334 [2023-08-29 09:36:17,928 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-08-29 09:36:17,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:17,929 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:17,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-29 09:36:17,930 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:17,930 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:17,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:17,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:17,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 09:36:17,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:17,931 INFO L85 PathProgramCache]: Analyzing trace with hash 45091778, now seen corresponding path program 1 times [2023-08-29 09:36:17,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898478820] [2023-08-29 09:36:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:17,943 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 09:36:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:17,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898478820] [2023-08-29 09:36:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898478820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:17,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:17,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54175440] [2023-08-29 09:36:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:17,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 402 [2023-08-29 09:36:17,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:36:17,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:17,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 402 [2023-08-29 09:36:17,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:18,862 INFO L130 PetriNetUnfolder]: 10525/15163 cut-off events. [2023-08-29 09:36:18,862 INFO L131 PetriNetUnfolder]: For 3148/3148 co-relation queries the response was YES. [2023-08-29 09:36:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30624 conditions, 15163 events. 10525/15163 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92216 event pairs, 8555 based on Foata normal form. 0/12423 useless extension candidates. Maximal degree in co-relation 4069. Up to 13636 conditions per place. [2023-08-29 09:36:18,927 INFO L137 encePairwiseOnDemand]: 377/402 looper letters, 30 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-08-29 09:36:18,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 182 flow [2023-08-29 09:36:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 365 transitions. [2023-08-29 09:36:18,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539800995024876 [2023-08-29 09:36:18,929 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 365 transitions. [2023-08-29 09:36:18,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 365 transitions. [2023-08-29 09:36:18,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:18,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 365 transitions. [2023-08-29 09:36:18,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 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 09:36:18,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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 09:36:18,932 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 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 09:36:18,932 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 172 flow. Second operand 2 states and 365 transitions. [2023-08-29 09:36:18,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 182 flow [2023-08-29 09:36:18,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:18,936 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 110 flow [2023-08-29 09:36:18,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-29 09:36:18,937 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2023-08-29 09:36:18,938 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 110 flow [2023-08-29 09:36:18,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:36:18,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:18,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 09:36:18,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 09:36:18,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -994086908, now seen corresponding path program 1 times [2023-08-29 09:36:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633555747] [2023-08-29 09:36:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:18,955 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 09:36:18,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:18,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633555747] [2023-08-29 09:36:18,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633555747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:18,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:18,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300553121] [2023-08-29 09:36:18,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:18,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:18,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:18,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 402 [2023-08-29 09:36:18,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 09:36:18,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:18,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 402 [2023-08-29 09:36:18,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:23,682 INFO L130 PetriNetUnfolder]: 65293/86850 cut-off events. [2023-08-29 09:36:23,682 INFO L131 PetriNetUnfolder]: For 3036/3036 co-relation queries the response was YES. [2023-08-29 09:36:23,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176279 conditions, 86850 events. 65293/86850 cut-off events. For 3036/3036 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 558641 event pairs, 24624 based on Foata normal form. 0/74845 useless extension candidates. Maximal degree in co-relation 176272. Up to 53039 conditions per place. [2023-08-29 09:36:24,201 INFO L137 encePairwiseOnDemand]: 382/402 looper letters, 62 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2023-08-29 09:36:24,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 353 flow [2023-08-29 09:36:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-29 09:36:24,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42371475953565507 [2023-08-29 09:36:24,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-29 09:36:24,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-29 09:36:24,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:24,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-29 09:36:24,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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 09:36:24,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 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 09:36:24,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 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 09:36:24,207 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 110 flow. Second operand 3 states and 511 transitions. [2023-08-29 09:36:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 353 flow [2023-08-29 09:36:24,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:24,212 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 246 flow [2023-08-29 09:36:24,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-08-29 09:36:24,213 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-29 09:36:24,213 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 246 flow [2023-08-29 09:36:24,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 09:36:24,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:24,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:24,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 09:36:24,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 09:36:24,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 438895292, now seen corresponding path program 1 times [2023-08-29 09:36:24,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216895039] [2023-08-29 09:36:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:24,290 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 09:36:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216895039] [2023-08-29 09:36:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216895039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:24,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 09:36:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211991998] [2023-08-29 09:36:24,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:24,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 09:36:24,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 09:36:24,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 09:36:24,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 402 [2023-08-29 09:36:24,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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 09:36:24,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:24,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 402 [2023-08-29 09:36:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:24,618 INFO L130 PetriNetUnfolder]: 3308/5508 cut-off events. [2023-08-29 09:36:24,618 INFO L131 PetriNetUnfolder]: For 3178/3178 co-relation queries the response was YES. [2023-08-29 09:36:24,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14848 conditions, 5508 events. 3308/5508 cut-off events. For 3178/3178 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35007 event pairs, 123 based on Foata normal form. 1156/6643 useless extension candidates. Maximal degree in co-relation 14839. Up to 2692 conditions per place. [2023-08-29 09:36:24,640 INFO L137 encePairwiseOnDemand]: 389/402 looper letters, 65 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2023-08-29 09:36:24,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 567 flow [2023-08-29 09:36:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 09:36:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 09:36:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 843 transitions. [2023-08-29 09:36:24,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41940298507462687 [2023-08-29 09:36:24,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 843 transitions. [2023-08-29 09:36:24,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 843 transitions. [2023-08-29 09:36:24,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:24,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 843 transitions. [2023-08-29 09:36:24,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 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 09:36:24,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 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 09:36:24,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 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 09:36:24,647 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 246 flow. Second operand 5 states and 843 transitions. [2023-08-29 09:36:24,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 567 flow [2023-08-29 09:36:24,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:36:24,656 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 240 flow [2023-08-29 09:36:24,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-08-29 09:36:24,657 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-08-29 09:36:24,657 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 240 flow [2023-08-29 09:36:24,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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 09:36:24,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:24,658 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:24,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 09:36:24,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-29 09:36:24,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -874413903, now seen corresponding path program 1 times [2023-08-29 09:36:24,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:24,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598852903] [2023-08-29 09:36:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:24,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:24,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:24,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:24,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-08-29 09:36:24,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-08-29 09:36:24,675 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-29 09:36:24,676 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-29 09:36:24,677 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-29 09:36:24,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-29 09:36:24,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-08-29 09:36:24,678 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-29 09:36:24,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 09:36:24,678 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 09:36:24,678 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:24,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-29 09:36:24,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,727 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-29 09:36:24,727 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:36:24,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-29 09:36:24,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,731 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:24,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-29 09:36:24,756 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-29 09:36:24,756 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:36:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-29 09:36:24,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 45320 [2023-08-29 09:36:27,597 INFO L134 LiptonReduction]: Checked pairs total: 90062 [2023-08-29 09:36:27,597 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-29 09:36:27,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:27,598 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:27,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-08-29 09:36:27,599 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-29 09:36:27,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:27,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:27,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:27,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-29 09:36:27,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 61399380, now seen corresponding path program 1 times [2023-08-29 09:36:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625777257] [2023-08-29 09:36:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:27,610 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 09:36:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625777257] [2023-08-29 09:36:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625777257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174071239] [2023-08-29 09:36:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:27,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 488 [2023-08-29 09:36:27,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 217 flow. Second operand has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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 09:36:27,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:27,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 488 [2023-08-29 09:36:27,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:34,171 INFO L130 PetriNetUnfolder]: 81805/109627 cut-off events. [2023-08-29 09:36:34,172 INFO L131 PetriNetUnfolder]: For 29644/29644 co-relation queries the response was YES. [2023-08-29 09:36:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223441 conditions, 109627 events. 81805/109627 cut-off events. For 29644/29644 co-relation queries the response was YES. Maximal size of possible extension queue 3392. Compared 717811 event pairs, 66875 based on Foata normal form. 0/90075 useless extension candidates. Maximal degree in co-relation 31021. Up to 100468 conditions per place. [2023-08-29 09:36:34,715 INFO L137 encePairwiseOnDemand]: 457/488 looper letters, 37 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-29 09:36:34,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 229 flow [2023-08-29 09:36:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 444 transitions. [2023-08-29 09:36:34,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45491803278688525 [2023-08-29 09:36:34,716 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 444 transitions. [2023-08-29 09:36:34,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 444 transitions. [2023-08-29 09:36:34,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:34,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 444 transitions. [2023-08-29 09:36:34,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 222.0) internal successors, (444), 2 states have internal predecessors, (444), 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 09:36:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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 09:36:34,719 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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 09:36:34,719 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 217 flow. Second operand 2 states and 444 transitions. [2023-08-29 09:36:34,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 229 flow [2023-08-29 09:36:34,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 209 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:34,730 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 135 flow [2023-08-29 09:36:34,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=135, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-29 09:36:34,730 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -30 predicate places. [2023-08-29 09:36:34,731 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 135 flow [2023-08-29 09:36:34,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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 09:36:34,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:34,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 09:36:34,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-29 09:36:34,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -505607278, now seen corresponding path program 1 times [2023-08-29 09:36:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:34,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331545490] [2023-08-29 09:36:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:34,742 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 09:36:34,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331545490] [2023-08-29 09:36:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331545490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089029015] [2023-08-29 09:36:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:34,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 488 [2023-08-29 09:36:34,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 09:36:34,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:34,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 488 [2023-08-29 09:36:34,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:31,732 INFO L130 PetriNetUnfolder]: 824381/1036560 cut-off events. [2023-08-29 09:37:31,732 INFO L131 PetriNetUnfolder]: For 30698/30698 co-relation queries the response was YES. [2023-08-29 09:37:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098282 conditions, 1036560 events. 824381/1036560 cut-off events. For 30698/30698 co-relation queries the response was YES. Maximal size of possible extension queue 31872. Compared 7067695 event pairs, 317834 based on Foata normal form. 0/885395 useless extension candidates. Maximal degree in co-relation 2098274. Up to 620089 conditions per place. [2023-08-29 09:37:38,621 INFO L137 encePairwiseOnDemand]: 463/488 looper letters, 77 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2023-08-29 09:37:38,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 439 flow [2023-08-29 09:37:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:37:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:37:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-29 09:37:38,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-29 09:37:38,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-29 09:37:38,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-29 09:37:38,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:38,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-29 09:37:38,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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 09:37:38,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 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 09:37:38,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 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 09:37:38,737 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 135 flow. Second operand 3 states and 621 transitions. [2023-08-29 09:37:38,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 439 flow [2023-08-29 09:37:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 439 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:38,836 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 305 flow [2023-08-29 09:37:38,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-29 09:37:38,837 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-29 09:37:38,837 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 305 flow [2023-08-29 09:37:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 09:37:38,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:38,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:37:38,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 09:37:38,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-29 09:37:38,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1086685429, now seen corresponding path program 1 times [2023-08-29 09:37:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539547837] [2023-08-29 09:37:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:38,898 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 09:37:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539547837] [2023-08-29 09:37:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539547837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:38,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:38,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 09:37:38,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504600431] [2023-08-29 09:37:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:38,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 09:37:38,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 09:37:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 09:37:38,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 488 [2023-08-29 09:37:38,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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 09:37:38,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:38,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 488 [2023-08-29 09:37:38,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:40,681 INFO L130 PetriNetUnfolder]: 15857/24293 cut-off events. [2023-08-29 09:37:40,682 INFO L131 PetriNetUnfolder]: For 15422/15422 co-relation queries the response was YES. [2023-08-29 09:37:40,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67208 conditions, 24293 events. 15857/24293 cut-off events. For 15422/15422 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 168845 event pairs, 665 based on Foata normal form. 6236/30475 useless extension candidates. Maximal degree in co-relation 67198. Up to 13859 conditions per place. [2023-08-29 09:37:40,780 INFO L137 encePairwiseOnDemand]: 472/488 looper letters, 81 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2023-08-29 09:37:40,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 709 flow [2023-08-29 09:37:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 09:37:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 09:37:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1027 transitions. [2023-08-29 09:37:40,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209016393442623 [2023-08-29 09:37:40,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1027 transitions. [2023-08-29 09:37:40,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1027 transitions. [2023-08-29 09:37:40,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:40,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1027 transitions. [2023-08-29 09:37:40,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.4) internal successors, (1027), 5 states have internal predecessors, (1027), 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 09:37:40,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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 09:37:40,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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 09:37:40,801 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 305 flow. Second operand 5 states and 1027 transitions. [2023-08-29 09:37:40,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 709 flow [2023-08-29 09:37:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:37:40,858 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 297 flow [2023-08-29 09:37:40,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-29 09:37:40,858 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -28 predicate places. [2023-08-29 09:37:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 297 flow [2023-08-29 09:37:40,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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 09:37:40,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:40,859 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:37:40,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 09:37:40,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-29 09:37:40,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1539051106, now seen corresponding path program 1 times [2023-08-29 09:37:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932727353] [2023-08-29 09:37:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:40,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:40,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:40,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (41 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (40 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (39 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (38 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (37 of 43 remaining) [2023-08-29 09:37:40,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 43 remaining) [2023-08-29 09:37:40,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 43 remaining) [2023-08-29 09:37:40,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 43 remaining) [2023-08-29 09:37:40,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 43 remaining) [2023-08-29 09:37:40,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 43 remaining) [2023-08-29 09:37:40,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 43 remaining) [2023-08-29 09:37:40,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 43 remaining) [2023-08-29 09:37:40,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 43 remaining) [2023-08-29 09:37:40,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 43 remaining) [2023-08-29 09:37:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 09:37:40,915 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 09:37:40,916 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:40,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-29 09:37:40,974 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:40,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,024 INFO L130 PetriNetUnfolder]: 19/365 cut-off events. [2023-08-29 09:37:41,024 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:37:41,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 365 events. 19/365 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1283 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 329. Up to 14 conditions per place. [2023-08-29 09:37:41,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:41,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,032 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 295 transitions, 650 flow [2023-08-29 09:37:41,069 INFO L130 PetriNetUnfolder]: 19/365 cut-off events. [2023-08-29 09:37:41,069 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:37:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 365 events. 19/365 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1283 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 329. Up to 14 conditions per place. [2023-08-29 09:37:41,087 INFO L119 LiptonReduction]: Number of co-enabled transitions 66264 [2023-08-29 09:37:44,938 INFO L134 LiptonReduction]: Checked pairs total: 137420 [2023-08-29 09:37:44,939 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-29 09:37:44,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:44,940 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;@2fd0cb73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:44,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-29 09:37:44,941 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:37:44,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:44,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:44,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:37:44,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-29 09:37:44,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash 80638818, now seen corresponding path program 1 times [2023-08-29 09:37:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468798945] [2023-08-29 09:37:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:44,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:44,971 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 09:37:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468798945] [2023-08-29 09:37:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468798945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:37:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131854085] [2023-08-29 09:37:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:44,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 578 [2023-08-29 09:37:44,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 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 09:37:44,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:44,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 578 [2023-08-29 09:37:44,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand