./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.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 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:57:52,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:57:52,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:57:52,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:57:52,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:57:52,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:57:52,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:57:52,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:57:52,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:57:52,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:57:52,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:57:52,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:57:52,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:57:52,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:57:52,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:57:52,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:57:52,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:57:52,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:57:52,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:57:52,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:57:52,702 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:57:52,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:57:52,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:57:52,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:57:52,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:57:52,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:57:52,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:57:52,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:57:52,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:57:52,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:57:52,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:57:52,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:57:52,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:57:52,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:57:52,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:57:52,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:57:52,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:57:52,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:57:52,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:57:52,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:57:52,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:57:52,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:57:52,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:57:52,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:57:52,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:57:52,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:57:52,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:57:52,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:57:52,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:57:52,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:57:52,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:57:52,747 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:57:52,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:57:52,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:57:52,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:57:52,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:57:52,749 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:57:52,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:57:52,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:57:52,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:57:52,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:57:52,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:57:52,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:57:52,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:57:52,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:52,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:57:52,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:57:52,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:57:52,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:57:52,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:57:52,753 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:57:52,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:57:52,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:57:52,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 [2022-04-18 15:57:52,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:57:52,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:57:52,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:57:52,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:57:52,969 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:57:52,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i [2022-04-18 15:57:53,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b3a8f4/fc1e99b7ea1d48efbc5fe9333780ef77/FLAG63dce29e0 [2022-04-18 15:57:53,470 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:57:53,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i [2022-04-18 15:57:53,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b3a8f4/fc1e99b7ea1d48efbc5fe9333780ef77/FLAG63dce29e0 [2022-04-18 15:57:53,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b3a8f4/fc1e99b7ea1d48efbc5fe9333780ef77 [2022-04-18 15:57:53,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:57:53,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:57:53,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:53,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:57:53,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:57:53,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:53" (1/1) ... [2022-04-18 15:57:53,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2443fd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:53, skipping insertion in model container [2022-04-18 15:57:53,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:53" (1/1) ... [2022-04-18 15:57:53,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:57:53,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:57:53,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i[46865,46878] [2022-04-18 15:57:53,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:53,935 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:57:53,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12_variant.i[46865,46878] [2022-04-18 15:57:53,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:54,018 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:57:54,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54 WrapperNode [2022-04-18 15:57:54,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:54,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:54,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:57:54,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:57:54,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,081 INFO L137 Inliner]: procedures = 275, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2022-04-18 15:57:54,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:54,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:57:54,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:57:54,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:57:54,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:57:54,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:57:54,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:57:54,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:57:54,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (1/1) ... [2022-04-18 15:57:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:54,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:57:54,157 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) [2022-04-18 15:57:54,191 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 [2022-04-18 15:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 15:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-04-18 15:57:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:57:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:57:54,220 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:57:54,310 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:57:54,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:57:54,526 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:57:54,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:57:54,559 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 15:57:54,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:54 BoogieIcfgContainer [2022-04-18 15:57:54,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:57:54,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:57:54,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:57:54,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:57:54,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:57:53" (1/3) ... [2022-04-18 15:57:54,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a0d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:54, skipping insertion in model container [2022-04-18 15:57:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:54" (2/3) ... [2022-04-18 15:57:54,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a0d32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:54, skipping insertion in model container [2022-04-18 15:57:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:54" (3/3) ... [2022-04-18 15:57:54,567 INFO L111 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2022-04-18 15:57:54,570 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:57:54,571 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:57:54,571 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-04-18 15:57:54,571 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:57:54,664 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:54,727 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:54,733 INFO L340 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 [2022-04-18 15:57:54,734 INFO L341 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-04-18 15:57:54,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 167 transitions, 339 flow [2022-04-18 15:57:54,835 INFO L129 PetriNetUnfolder]: 7/179 cut-off events. [2022-04-18 15:57:54,848 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:54,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 179 events. 7/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-04-18 15:57:54,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 167 transitions, 339 flow [2022-04-18 15:57:54,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 167 transitions, 339 flow [2022-04-18 15:57:54,869 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2022-04-18 15:57:54,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:54,869 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:54,870 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:54,870 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1653347310, now seen corresponding path program 1 times [2022-04-18 15:57:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:54,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712172376] [2022-04-18 15:57:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712172376] [2022-04-18 15:57:55,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712172376] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121315693] [2022-04-18 15:57:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,059 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 167 [2022-04-18 15:57:55,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 167 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 167 [2022-04-18 15:57:55,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,122 INFO L129 PetriNetUnfolder]: 2/154 cut-off events. [2022-04-18 15:57:55,123 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:55,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 154 events. 2/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2022-04-18 15:57:55,124 INFO L132 encePairwiseOnDemand]: 155/167 looper letters, 6 selfloop transitions, 2 changer transitions 1/150 dead transitions. [2022-04-18 15:57:55,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 321 flow [2022-04-18 15:57:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2022-04-18 15:57:55,135 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9221556886227545 [2022-04-18 15:57:55,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2022-04-18 15:57:55,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2022-04-18 15:57:55,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2022-04-18 15:57:55,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,160 INFO L186 Difference]: Start difference. First operand has 164 places, 167 transitions, 339 flow. Second operand 3 states and 462 transitions. [2022-04-18 15:57:55,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 321 flow [2022-04-18 15:57:55,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:55,181 INFO L242 Difference]: Finished difference. Result has 153 places, 149 transitions, 307 flow [2022-04-18 15:57:55,183 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=153, PETRI_TRANSITIONS=149} [2022-04-18 15:57:55,198 INFO L335 CegarLoopForPetriNet]: 164 programPoint places, -11 predicate places. [2022-04-18 15:57:55,199 INFO L478 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 307 flow [2022-04-18 15:57:55,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,199 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,199 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,200 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:57:55,200 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1828879409, now seen corresponding path program 1 times [2022-04-18 15:57:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957818583] [2022-04-18 15:57:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957818583] [2022-04-18 15:57:55,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957818583] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256723303] [2022-04-18 15:57:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,236 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 167 [2022-04-18 15:57:55,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 149 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 167 [2022-04-18 15:57:55,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,286 INFO L129 PetriNetUnfolder]: 2/152 cut-off events. [2022-04-18 15:57:55,287 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:55,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 152 events. 2/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 149. Up to 19 conditions per place. [2022-04-18 15:57:55,288 INFO L132 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2022-04-18 15:57:55,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 345 flow [2022-04-18 15:57:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-04-18 15:57:55,292 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8562874251497006 [2022-04-18 15:57:55,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-04-18 15:57:55,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-04-18 15:57:55,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-04-18 15:57:55,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,298 INFO L186 Difference]: Start difference. First operand has 153 places, 149 transitions, 307 flow. Second operand 3 states and 429 transitions. [2022-04-18 15:57:55,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 345 flow [2022-04-18 15:57:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:55,305 INFO L242 Difference]: Finished difference. Result has 151 places, 148 transitions, 305 flow [2022-04-18 15:57:55,305 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2022-04-18 15:57:55,306 INFO L335 CegarLoopForPetriNet]: 164 programPoint places, -13 predicate places. [2022-04-18 15:57:55,306 INFO L478 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 305 flow [2022-04-18 15:57:55,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,307 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,307 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:57:55,308 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:55,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,309 INFO L85 PathProgramCache]: Analyzing trace with hash -222465893, now seen corresponding path program 1 times [2022-04-18 15:57:55,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042430831] [2022-04-18 15:57:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042430831] [2022-04-18 15:57:55,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042430831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659850411] [2022-04-18 15:57:55,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,378 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 167 [2022-04-18 15:57:55,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 167 [2022-04-18 15:57:55,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,412 INFO L129 PetriNetUnfolder]: 2/151 cut-off events. [2022-04-18 15:57:55,412 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:55,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 151 events. 2/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 140. Up to 16 conditions per place. [2022-04-18 15:57:55,413 INFO L132 encePairwiseOnDemand]: 164/167 looper letters, 15 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2022-04-18 15:57:55,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 147 transitions, 337 flow [2022-04-18 15:57:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-04-18 15:57:55,415 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8682634730538922 [2022-04-18 15:57:55,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,418 INFO L186 Difference]: Start difference. First operand has 151 places, 148 transitions, 305 flow. Second operand 3 states and 435 transitions. [2022-04-18 15:57:55,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 147 transitions, 337 flow [2022-04-18 15:57:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:55,424 INFO L242 Difference]: Finished difference. Result has 150 places, 147 transitions, 303 flow [2022-04-18 15:57:55,424 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=150, PETRI_TRANSITIONS=147} [2022-04-18 15:57:55,426 INFO L335 CegarLoopForPetriNet]: 164 programPoint places, -14 predicate places. [2022-04-18 15:57:55,426 INFO L478 AbstractCegarLoop]: Abstraction has has 150 places, 147 transitions, 303 flow [2022-04-18 15:57:55,426 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,426 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,426 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,426 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:57:55,426 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2142137568, now seen corresponding path program 1 times [2022-04-18 15:57:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838614000] [2022-04-18 15:57:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838614000] [2022-04-18 15:57:55,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838614000] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682726184] [2022-04-18 15:57:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,481 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,482 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 167 [2022-04-18 15:57:55,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 147 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 167 [2022-04-18 15:57:55,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,503 INFO L129 PetriNetUnfolder]: 2/148 cut-off events. [2022-04-18 15:57:55,503 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:57:55,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 148 events. 2/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 123. Up to 9 conditions per place. [2022-04-18 15:57:55,504 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 10 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2022-04-18 15:57:55,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 319 flow [2022-04-18 15:57:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-04-18 15:57:55,506 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8782435129740519 [2022-04-18 15:57:55,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-04-18 15:57:55,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-04-18 15:57:55,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-04-18 15:57:55,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,515 INFO L186 Difference]: Start difference. First operand has 150 places, 147 transitions, 303 flow. Second operand 3 states and 440 transitions. [2022-04-18 15:57:55,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 319 flow [2022-04-18 15:57:55,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:55,518 INFO L242 Difference]: Finished difference. Result has 147 places, 144 transitions, 295 flow [2022-04-18 15:57:55,518 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=147, PETRI_TRANSITIONS=144} [2022-04-18 15:57:55,520 INFO L335 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2022-04-18 15:57:55,521 INFO L478 AbstractCegarLoop]: Abstraction has has 147 places, 144 transitions, 295 flow [2022-04-18 15:57:55,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:57:55,521 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1848343123, now seen corresponding path program 1 times [2022-04-18 15:57:55,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506142969] [2022-04-18 15:57:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506142969] [2022-04-18 15:57:55,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506142969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789185065] [2022-04-18 15:57:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,584 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,585 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 167 [2022-04-18 15:57:55,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 144 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 167 [2022-04-18 15:57:55,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,615 INFO L129 PetriNetUnfolder]: 2/147 cut-off events. [2022-04-18 15:57:55,615 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:55,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 2/147 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 128. Up to 16 conditions per place. [2022-04-18 15:57:55,616 INFO L132 encePairwiseOnDemand]: 164/167 looper letters, 15 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2022-04-18 15:57:55,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 143 transitions, 327 flow [2022-04-18 15:57:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2022-04-18 15:57:55,617 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8682634730538922 [2022-04-18 15:57:55,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2022-04-18 15:57:55,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,620 INFO L186 Difference]: Start difference. First operand has 147 places, 144 transitions, 295 flow. Second operand 3 states and 435 transitions. [2022-04-18 15:57:55,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 143 transitions, 327 flow [2022-04-18 15:57:55,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 143 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:55,621 INFO L242 Difference]: Finished difference. Result has 147 places, 143 transitions, 296 flow [2022-04-18 15:57:55,622 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2022-04-18 15:57:55,623 INFO L335 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2022-04-18 15:57:55,623 INFO L478 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 296 flow [2022-04-18 15:57:55,624 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,624 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:57:55,625 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 15:57:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1263702232, now seen corresponding path program 1 times [2022-04-18 15:57:55,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982874841] [2022-04-18 15:57:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:55,655 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:55,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:55,695 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:55,696 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-04-18 15:57:55,697 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-04-18 15:57:55,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-04-18 15:57:55,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-04-18 15:57:55,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-04-18 15:57:55,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-04-18 15:57:55,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-04-18 15:57:55,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-04-18 15:57:55,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-04-18 15:57:55,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-04-18 15:57:55,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-04-18 15:57:55,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-04-18 15:57:55,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-04-18 15:57:55,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-04-18 15:57:55,707 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:57:55,709 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,711 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:55,711 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:57:55,762 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:55,764 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:55,769 INFO L340 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 [2022-04-18 15:57:55,769 INFO L341 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2022-04-18 15:57:55,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 252 places, 257 transitions, 526 flow [2022-04-18 15:57:55,805 INFO L129 PetriNetUnfolder]: 12/283 cut-off events. [2022-04-18 15:57:55,806 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:57:55,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 283 events. 12/283 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 553 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2022-04-18 15:57:55,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 257 transitions, 526 flow [2022-04-18 15:57:55,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 257 transitions, 526 flow [2022-04-18 15:57:55,817 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2022-04-18 15:57:55,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:55,817 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,817 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,817 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash 752125294, now seen corresponding path program 1 times [2022-04-18 15:57:55,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439170957] [2022-04-18 15:57:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439170957] [2022-04-18 15:57:55,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439170957] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414082854] [2022-04-18 15:57:55,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,847 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,849 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 257 [2022-04-18 15:57:55,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 257 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 257 [2022-04-18 15:57:55,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:55,930 INFO L129 PetriNetUnfolder]: 14/429 cut-off events. [2022-04-18 15:57:55,930 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-04-18 15:57:55,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 429 events. 14/429 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1489 event pairs, 6 based on Foata normal form. 25/390 useless extension candidates. Maximal degree in co-relation 163. Up to 22 conditions per place. [2022-04-18 15:57:55,936 INFO L132 encePairwiseOnDemand]: 239/257 looper letters, 9 selfloop transitions, 2 changer transitions 1/233 dead transitions. [2022-04-18 15:57:55,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 233 transitions, 500 flow [2022-04-18 15:57:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2022-04-18 15:57:55,938 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9221789883268483 [2022-04-18 15:57:55,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2022-04-18 15:57:55,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2022-04-18 15:57:55,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:55,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2022-04-18 15:57:55,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,943 INFO L186 Difference]: Start difference. First operand has 252 places, 257 transitions, 526 flow. Second operand 3 states and 711 transitions. [2022-04-18 15:57:55,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 233 transitions, 500 flow [2022-04-18 15:57:55,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 233 transitions, 498 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:55,946 INFO L242 Difference]: Finished difference. Result has 236 places, 232 transitions, 478 flow [2022-04-18 15:57:55,946 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2022-04-18 15:57:55,948 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -16 predicate places. [2022-04-18 15:57:55,948 INFO L478 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 478 flow [2022-04-18 15:57:55,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:55,949 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:55,949 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:57:55,949 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1939649678, now seen corresponding path program 1 times [2022-04-18 15:57:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:55,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049713751] [2022-04-18 15:57:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:55,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:55,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049713751] [2022-04-18 15:57:55,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049713751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:55,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:55,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301828958] [2022-04-18 15:57:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:55,978 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:55,980 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 257 [2022-04-18 15:57:55,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:55,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:55,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 257 [2022-04-18 15:57:55,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,232 INFO L129 PetriNetUnfolder]: 255/1494 cut-off events. [2022-04-18 15:57:56,232 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-04-18 15:57:56,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 1494 events. 255/1494 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10547 event pairs, 210 based on Foata normal form. 0/1206 useless extension candidates. Maximal degree in co-relation 1990. Up to 471 conditions per place. [2022-04-18 15:57:56,244 INFO L132 encePairwiseOnDemand]: 254/257 looper letters, 33 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2022-04-18 15:57:56,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 231 transitions, 546 flow [2022-04-18 15:57:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-04-18 15:57:56,246 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8404669260700389 [2022-04-18 15:57:56,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-04-18 15:57:56,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-04-18 15:57:56,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:56,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-04-18 15:57:56,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,249 INFO L186 Difference]: Start difference. First operand has 236 places, 232 transitions, 478 flow. Second operand 3 states and 648 transitions. [2022-04-18 15:57:56,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 231 transitions, 546 flow [2022-04-18 15:57:56,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 231 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:56,253 INFO L242 Difference]: Finished difference. Result has 234 places, 231 transitions, 476 flow [2022-04-18 15:57:56,254 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2022-04-18 15:57:56,254 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -18 predicate places. [2022-04-18 15:57:56,254 INFO L478 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 476 flow [2022-04-18 15:57:56,254 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,255 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,255 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,255 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:57:56,255 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1739051900, now seen corresponding path program 1 times [2022-04-18 15:57:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309782858] [2022-04-18 15:57:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:56,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309782858] [2022-04-18 15:57:56,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309782858] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:56,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:56,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363698105] [2022-04-18 15:57:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:56,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:56,298 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 257 [2022-04-18 15:57:56,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:56,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 257 [2022-04-18 15:57:56,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,425 INFO L129 PetriNetUnfolder]: 50/864 cut-off events. [2022-04-18 15:57:56,426 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:57:56,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 864 events. 50/864 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5011 event pairs, 30 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 939. Up to 82 conditions per place. [2022-04-18 15:57:56,431 INFO L132 encePairwiseOnDemand]: 254/257 looper letters, 21 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-04-18 15:57:56,431 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 230 transitions, 520 flow [2022-04-18 15:57:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2022-04-18 15:57:56,433 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8715953307392996 [2022-04-18 15:57:56,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2022-04-18 15:57:56,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2022-04-18 15:57:56,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:56,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2022-04-18 15:57:56,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,436 INFO L186 Difference]: Start difference. First operand has 234 places, 231 transitions, 476 flow. Second operand 3 states and 672 transitions. [2022-04-18 15:57:56,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 230 transitions, 520 flow [2022-04-18 15:57:56,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 230 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:56,440 INFO L242 Difference]: Finished difference. Result has 233 places, 230 transitions, 474 flow [2022-04-18 15:57:56,440 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=233, PETRI_TRANSITIONS=230} [2022-04-18 15:57:56,440 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -19 predicate places. [2022-04-18 15:57:56,441 INFO L478 AbstractCegarLoop]: Abstraction has has 233 places, 230 transitions, 474 flow [2022-04-18 15:57:56,441 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,441 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,441 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,441 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:57:56,441 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash -512544895, now seen corresponding path program 1 times [2022-04-18 15:57:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165382065] [2022-04-18 15:57:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:56,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165382065] [2022-04-18 15:57:56,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165382065] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:56,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:56,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584515593] [2022-04-18 15:57:56,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:56,458 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:56,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:56,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:56,459 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 257 [2022-04-18 15:57:56,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 230 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:56,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 257 [2022-04-18 15:57:56,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,526 INFO L129 PetriNetUnfolder]: 38/774 cut-off events. [2022-04-18 15:57:56,527 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:57:56,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 774 events. 38/774 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4213 event pairs, 20 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 811. Up to 54 conditions per place. [2022-04-18 15:57:56,532 INFO L132 encePairwiseOnDemand]: 252/257 looper letters, 15 selfloop transitions, 1 changer transitions 0/226 dead transitions. [2022-04-18 15:57:56,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 226 transitions, 498 flow [2022-04-18 15:57:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2022-04-18 15:57:56,534 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8780804150453956 [2022-04-18 15:57:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2022-04-18 15:57:56,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2022-04-18 15:57:56,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:56,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2022-04-18 15:57:56,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,538 INFO L186 Difference]: Start difference. First operand has 233 places, 230 transitions, 474 flow. Second operand 3 states and 677 transitions. [2022-04-18 15:57:56,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 226 transitions, 498 flow [2022-04-18 15:57:56,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 226 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:56,541 INFO L242 Difference]: Finished difference. Result has 229 places, 226 transitions, 464 flow [2022-04-18 15:57:56,541 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=229, PETRI_TRANSITIONS=226} [2022-04-18 15:57:56,542 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -23 predicate places. [2022-04-18 15:57:56,542 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 226 transitions, 464 flow [2022-04-18 15:57:56,542 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,543 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,543 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:57:56,543 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash 840442093, now seen corresponding path program 1 times [2022-04-18 15:57:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099578784] [2022-04-18 15:57:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099578784] [2022-04-18 15:57:56,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099578784] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:56,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:56,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755804449] [2022-04-18 15:57:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:56,563 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:56,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:56,564 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 257 [2022-04-18 15:57:56,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 226 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:56,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 257 [2022-04-18 15:57:56,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,694 INFO L129 PetriNetUnfolder]: 162/1290 cut-off events. [2022-04-18 15:57:56,694 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-04-18 15:57:56,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 1290 events. 162/1290 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7944 event pairs, 132 based on Foata normal form. 0/1073 useless extension candidates. Maximal degree in co-relation 1606. Up to 312 conditions per place. [2022-04-18 15:57:56,704 INFO L132 encePairwiseOnDemand]: 254/257 looper letters, 27 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-04-18 15:57:56,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 225 transitions, 520 flow [2022-04-18 15:57:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2022-04-18 15:57:56,706 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8560311284046692 [2022-04-18 15:57:56,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2022-04-18 15:57:56,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2022-04-18 15:57:56,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:56,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2022-04-18 15:57:56,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,709 INFO L186 Difference]: Start difference. First operand has 229 places, 226 transitions, 464 flow. Second operand 3 states and 660 transitions. [2022-04-18 15:57:56,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 225 transitions, 520 flow [2022-04-18 15:57:56,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 225 transitions, 519 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:56,712 INFO L242 Difference]: Finished difference. Result has 229 places, 225 transitions, 465 flow [2022-04-18 15:57:56,713 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=229, PETRI_TRANSITIONS=225} [2022-04-18 15:57:56,713 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -23 predicate places. [2022-04-18 15:57:56,713 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 225 transitions, 465 flow [2022-04-18 15:57:56,714 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,714 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:56,714 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:56,714 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:57:56,714 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1574249203, now seen corresponding path program 1 times [2022-04-18 15:57:56,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:56,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344739393] [2022-04-18 15:57:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:56,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:56,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:56,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344739393] [2022-04-18 15:57:56,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344739393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:56,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:56,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605360162] [2022-04-18 15:57:56,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:56,742 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:56,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:56,744 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 257 [2022-04-18 15:57:56,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 225 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:56,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:56,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 257 [2022-04-18 15:57:56,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,016 INFO L129 PetriNetUnfolder]: 254/2552 cut-off events. [2022-04-18 15:57:57,016 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-04-18 15:57:57,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 2552 events. 254/2552 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 21977 event pairs, 83 based on Foata normal form. 0/2158 useless extension candidates. Maximal degree in co-relation 3018. Up to 280 conditions per place. [2022-04-18 15:57:57,030 INFO L132 encePairwiseOnDemand]: 237/257 looper letters, 41 selfloop transitions, 14 changer transitions 0/248 dead transitions. [2022-04-18 15:57:57,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 626 flow [2022-04-18 15:57:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-04-18 15:57:57,032 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8845654993514915 [2022-04-18 15:57:57,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-04-18 15:57:57,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-04-18 15:57:57,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-04-18 15:57:57,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,036 INFO L186 Difference]: Start difference. First operand has 229 places, 225 transitions, 465 flow. Second operand 3 states and 682 transitions. [2022-04-18 15:57:57,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 248 transitions, 626 flow [2022-04-18 15:57:57,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 248 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:57,040 INFO L242 Difference]: Finished difference. Result has 231 places, 239 transitions, 585 flow [2022-04-18 15:57:57,040 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=585, PETRI_PLACES=231, PETRI_TRANSITIONS=239} [2022-04-18 15:57:57,041 INFO L335 CegarLoopForPetriNet]: 252 programPoint places, -21 predicate places. [2022-04-18 15:57:57,041 INFO L478 AbstractCegarLoop]: Abstraction has has 231 places, 239 transitions, 585 flow [2022-04-18 15:57:57,041 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,041 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,041 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,042 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:57:57,042 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 15:57:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2006264346, now seen corresponding path program 1 times [2022-04-18 15:57:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902696139] [2022-04-18 15:57:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:57,059 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:57,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:57,089 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:57,089 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 52 remaining) [2022-04-18 15:57:57,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (50 of 52 remaining) [2022-04-18 15:57:57,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (49 of 52 remaining) [2022-04-18 15:57:57,089 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (48 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (47 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (46 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (45 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (44 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (43 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (42 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (41 of 52 remaining) [2022-04-18 15:57:57,090 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (40 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (39 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (38 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (37 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (36 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (35 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (34 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (33 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (32 of 52 remaining) [2022-04-18 15:57:57,091 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (31 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (30 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (29 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (28 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (27 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (26 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (25 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (24 of 52 remaining) [2022-04-18 15:57:57,092 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (23 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (22 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (21 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (20 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (19 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (18 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (17 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (16 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (15 of 52 remaining) [2022-04-18 15:57:57,093 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (14 of 52 remaining) [2022-04-18 15:57:57,094 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (13 of 52 remaining) [2022-04-18 15:57:57,094 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (12 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (11 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (10 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (9 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (8 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (7 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (6 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (5 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (4 of 52 remaining) [2022-04-18 15:57:57,095 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (3 of 52 remaining) [2022-04-18 15:57:57,096 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (2 of 52 remaining) [2022-04-18 15:57:57,096 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (1 of 52 remaining) [2022-04-18 15:57:57,096 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (0 of 52 remaining) [2022-04-18 15:57:57,096 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:57:57,097 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,097 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:57,097 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:57:57,137 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:57,139 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:57,139 INFO L340 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 [2022-04-18 15:57:57,139 INFO L341 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-04-18 15:57:57,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 340 places, 347 transitions, 715 flow [2022-04-18 15:57:57,183 INFO L129 PetriNetUnfolder]: 17/387 cut-off events. [2022-04-18 15:57:57,183 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:57:57,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 387 events. 17/387 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1091 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2022-04-18 15:57:57,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 347 transitions, 715 flow [2022-04-18 15:57:57,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 347 transitions, 715 flow [2022-04-18 15:57:57,198 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2022-04-18 15:57:57,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:57,199 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,199 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,199 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:57:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2085757458, now seen corresponding path program 1 times [2022-04-18 15:57:57,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792614873] [2022-04-18 15:57:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792614873] [2022-04-18 15:57:57,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792614873] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:57,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475271610] [2022-04-18 15:57:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,230 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:57,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:57,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:57,232 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 347 [2022-04-18 15:57:57,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 347 transitions, 715 flow. Second operand has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 347 [2022-04-18 15:57:57,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,376 INFO L129 PetriNetUnfolder]: 68/1272 cut-off events. [2022-04-18 15:57:57,377 INFO L130 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-04-18 15:57:57,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 1272 events. 68/1272 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8434 event pairs, 42 based on Foata normal form. 91/1167 useless extension candidates. Maximal degree in co-relation 460. Up to 85 conditions per place. [2022-04-18 15:57:57,396 INFO L132 encePairwiseOnDemand]: 323/347 looper letters, 12 selfloop transitions, 2 changer transitions 1/316 dead transitions. [2022-04-18 15:57:57,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 316 transitions, 681 flow [2022-04-18 15:57:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-04-18 15:57:57,398 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9221902017291066 [2022-04-18 15:57:57,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-04-18 15:57:57,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-04-18 15:57:57,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-04-18 15:57:57,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,402 INFO L186 Difference]: Start difference. First operand has 340 places, 347 transitions, 715 flow. Second operand 3 states and 960 transitions. [2022-04-18 15:57:57,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 316 transitions, 681 flow [2022-04-18 15:57:57,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 316 transitions, 675 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:57,408 INFO L242 Difference]: Finished difference. Result has 319 places, 315 transitions, 649 flow [2022-04-18 15:57:57,408 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=649, PETRI_PLACES=319, PETRI_TRANSITIONS=315} [2022-04-18 15:57:57,409 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -21 predicate places. [2022-04-18 15:57:57,409 INFO L478 AbstractCegarLoop]: Abstraction has has 319 places, 315 transitions, 649 flow [2022-04-18 15:57:57,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,410 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:57:57,410 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:57:57,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1379263091, now seen corresponding path program 1 times [2022-04-18 15:57:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085295411] [2022-04-18 15:57:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085295411] [2022-04-18 15:57:57,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085295411] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908097676] [2022-04-18 15:57:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,429 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:57,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:57,430 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 347 [2022-04-18 15:57:57,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 315 transitions, 649 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 347 [2022-04-18 15:57:57,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:00,032 INFO L129 PetriNetUnfolder]: 7401/24111 cut-off events. [2022-04-18 15:58:00,032 INFO L130 PetriNetUnfolder]: For 721/721 co-relation queries the response was YES. [2022-04-18 15:58:00,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35485 conditions, 24111 events. 7401/24111 cut-off events. For 721/721 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 285269 event pairs, 6510 based on Foata normal form. 0/18968 useless extension candidates. Maximal degree in co-relation 35451. Up to 10626 conditions per place. [2022-04-18 15:58:00,254 INFO L132 encePairwiseOnDemand]: 344/347 looper letters, 48 selfloop transitions, 2 changer transitions 0/314 dead transitions. [2022-04-18 15:58:00,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 314 transitions, 747 flow [2022-04-18 15:58:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 867 transitions. [2022-04-18 15:58:00,257 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8328530259365994 [2022-04-18 15:58:00,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 867 transitions. [2022-04-18 15:58:00,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 867 transitions. [2022-04-18 15:58:00,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:00,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 867 transitions. [2022-04-18 15:58:00,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,261 INFO L186 Difference]: Start difference. First operand has 319 places, 315 transitions, 649 flow. Second operand 3 states and 867 transitions. [2022-04-18 15:58:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 314 transitions, 747 flow [2022-04-18 15:58:00,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 314 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:00,266 INFO L242 Difference]: Finished difference. Result has 317 places, 314 transitions, 647 flow [2022-04-18 15:58:00,266 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=647, PETRI_PLACES=317, PETRI_TRANSITIONS=314} [2022-04-18 15:58:00,267 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -23 predicate places. [2022-04-18 15:58:00,267 INFO L478 AbstractCegarLoop]: Abstraction has has 317 places, 314 transitions, 647 flow [2022-04-18 15:58:00,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,267 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:00,268 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:00,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:58:00,268 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash 961535863, now seen corresponding path program 1 times [2022-04-18 15:58:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503535482] [2022-04-18 15:58:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:00,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:00,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503535482] [2022-04-18 15:58:00,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503535482] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:00,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:00,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:00,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595492470] [2022-04-18 15:58:00,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:00,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:00,285 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 347 [2022-04-18 15:58:00,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 314 transitions, 647 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:00,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 347 [2022-04-18 15:58:00,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:00,811 INFO L129 PetriNetUnfolder]: 524/5469 cut-off events. [2022-04-18 15:58:00,812 INFO L130 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2022-04-18 15:58:00,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 5469 events. 524/5469 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 58589 event pairs, 390 based on Foata normal form. 0/4459 useless extension candidates. Maximal degree in co-relation 6240. Up to 658 conditions per place. [2022-04-18 15:58:00,855 INFO L132 encePairwiseOnDemand]: 344/347 looper letters, 27 selfloop transitions, 2 changer transitions 0/313 dead transitions. [2022-04-18 15:58:00,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 313 transitions, 703 flow [2022-04-18 15:58:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2022-04-18 15:58:00,857 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8731988472622478 [2022-04-18 15:58:00,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2022-04-18 15:58:00,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2022-04-18 15:58:00,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:00,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2022-04-18 15:58:00,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,863 INFO L186 Difference]: Start difference. First operand has 317 places, 314 transitions, 647 flow. Second operand 3 states and 909 transitions. [2022-04-18 15:58:00,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 313 transitions, 703 flow [2022-04-18 15:58:00,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 313 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:00,867 INFO L242 Difference]: Finished difference. Result has 316 places, 313 transitions, 645 flow [2022-04-18 15:58:00,867 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=316, PETRI_TRANSITIONS=313} [2022-04-18 15:58:00,868 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -24 predicate places. [2022-04-18 15:58:00,868 INFO L478 AbstractCegarLoop]: Abstraction has has 316 places, 313 transitions, 645 flow [2022-04-18 15:58:00,868 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,868 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:00,868 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:00,869 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 15:58:00,869 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1217512636, now seen corresponding path program 1 times [2022-04-18 15:58:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166945379] [2022-04-18 15:58:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:00,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166945379] [2022-04-18 15:58:00,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166945379] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:00,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:00,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203186322] [2022-04-18 15:58:00,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:00,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:00,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:00,884 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 347 [2022-04-18 15:58:00,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 313 transitions, 645 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:00,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 347 [2022-04-18 15:58:00,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:01,257 INFO L129 PetriNetUnfolder]: 324/4168 cut-off events. [2022-04-18 15:58:01,257 INFO L130 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-04-18 15:58:01,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 4168 events. 324/4168 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42157 event pairs, 220 based on Foata normal form. 0/3492 useless extension candidates. Maximal degree in co-relation 4615. Up to 379 conditions per place. [2022-04-18 15:58:01,287 INFO L132 encePairwiseOnDemand]: 341/347 looper letters, 20 selfloop transitions, 1 changer transitions 0/308 dead transitions. [2022-04-18 15:58:01,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 308 transitions, 677 flow [2022-04-18 15:58:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2022-04-18 15:58:01,290 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.878001921229587 [2022-04-18 15:58:01,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2022-04-18 15:58:01,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2022-04-18 15:58:01,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:01,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2022-04-18 15:58:01,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:01,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:01,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:01,294 INFO L186 Difference]: Start difference. First operand has 316 places, 313 transitions, 645 flow. Second operand 3 states and 914 transitions. [2022-04-18 15:58:01,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 308 transitions, 677 flow [2022-04-18 15:58:01,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 308 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:01,299 INFO L242 Difference]: Finished difference. Result has 311 places, 308 transitions, 633 flow [2022-04-18 15:58:01,299 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=311, PETRI_TRANSITIONS=308} [2022-04-18 15:58:01,300 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -29 predicate places. [2022-04-18 15:58:01,300 INFO L478 AbstractCegarLoop]: Abstraction has has 311 places, 308 transitions, 633 flow [2022-04-18 15:58:01,300 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:01,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:01,301 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:01,301 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-18 15:58:01,301 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2047594669, now seen corresponding path program 1 times [2022-04-18 15:58:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:01,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318725422] [2022-04-18 15:58:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:01,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318725422] [2022-04-18 15:58:01,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318725422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:01,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:01,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881269094] [2022-04-18 15:58:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:01,321 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:01,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:01,322 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 347 [2022-04-18 15:58:01,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 308 transitions, 633 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:01,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:01,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 347 [2022-04-18 15:58:01,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:03,196 INFO L129 PetriNetUnfolder]: 3778/16890 cut-off events. [2022-04-18 15:58:03,196 INFO L130 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-04-18 15:58:03,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23008 conditions, 16890 events. 3778/16890 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 195786 event pairs, 3300 based on Foata normal form. 0/13621 useless extension candidates. Maximal degree in co-relation 22962. Up to 5624 conditions per place. [2022-04-18 15:58:03,384 INFO L132 encePairwiseOnDemand]: 344/347 looper letters, 39 selfloop transitions, 2 changer transitions 0/307 dead transitions. [2022-04-18 15:58:03,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 307 transitions, 713 flow [2022-04-18 15:58:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2022-04-18 15:58:03,393 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8501440922190202 [2022-04-18 15:58:03,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2022-04-18 15:58:03,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2022-04-18 15:58:03,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:03,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2022-04-18 15:58:03,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:03,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:03,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:03,397 INFO L186 Difference]: Start difference. First operand has 311 places, 308 transitions, 633 flow. Second operand 3 states and 885 transitions. [2022-04-18 15:58:03,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 307 transitions, 713 flow [2022-04-18 15:58:03,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 307 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:58:03,410 INFO L242 Difference]: Finished difference. Result has 311 places, 307 transitions, 634 flow [2022-04-18 15:58:03,410 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=311, PETRI_TRANSITIONS=307} [2022-04-18 15:58:03,411 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -29 predicate places. [2022-04-18 15:58:03,411 INFO L478 AbstractCegarLoop]: Abstraction has has 311 places, 307 transitions, 634 flow [2022-04-18 15:58:03,411 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:03,411 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:03,412 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:03,412 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 15:58:03,412 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 71185531, now seen corresponding path program 1 times [2022-04-18 15:58:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268184225] [2022-04-18 15:58:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268184225] [2022-04-18 15:58:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268184225] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:03,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:03,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411353950] [2022-04-18 15:58:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:03,432 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:03,433 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 347 [2022-04-18 15:58:03,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 307 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:03,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:03,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 347 [2022-04-18 15:58:03,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:08,322 INFO L129 PetriNetUnfolder]: 8342/44003 cut-off events. [2022-04-18 15:58:08,323 INFO L130 PetriNetUnfolder]: For 721/721 co-relation queries the response was YES. [2022-04-18 15:58:08,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56928 conditions, 44003 events. 8342/44003 cut-off events. For 721/721 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 646942 event pairs, 3043 based on Foata normal form. 0/36430 useless extension candidates. Maximal degree in co-relation 56881. Up to 7470 conditions per place. [2022-04-18 15:58:08,745 INFO L132 encePairwiseOnDemand]: 317/347 looper letters, 61 selfloop transitions, 21 changer transitions 0/342 dead transitions. [2022-04-18 15:58:08,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 342 transitions, 878 flow [2022-04-18 15:58:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 916 transitions. [2022-04-18 15:58:08,752 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8799231508165226 [2022-04-18 15:58:08,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 916 transitions. [2022-04-18 15:58:08,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 916 transitions. [2022-04-18 15:58:08,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:08,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 916 transitions. [2022-04-18 15:58:08,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:08,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:08,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:08,756 INFO L186 Difference]: Start difference. First operand has 311 places, 307 transitions, 634 flow. Second operand 3 states and 916 transitions. [2022-04-18 15:58:08,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 342 transitions, 878 flow [2022-04-18 15:58:08,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 342 transitions, 874 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:08,760 INFO L242 Difference]: Finished difference. Result has 313 places, 328 transitions, 816 flow [2022-04-18 15:58:08,761 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=313, PETRI_TRANSITIONS=328} [2022-04-18 15:58:08,761 INFO L335 CegarLoopForPetriNet]: 340 programPoint places, -27 predicate places. [2022-04-18 15:58:08,761 INFO L478 AbstractCegarLoop]: Abstraction has has 313 places, 328 transitions, 816 flow [2022-04-18 15:58:08,762 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:08,762 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:08,762 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:08,762 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 15:58:08,762 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1498268921, now seen corresponding path program 1 times [2022-04-18 15:58:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994944907] [2022-04-18 15:58:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:08,773 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:58:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:08,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:58:08,786 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:58:08,786 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (66 of 67 remaining) [2022-04-18 15:58:08,786 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (65 of 67 remaining) [2022-04-18 15:58:08,786 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (64 of 67 remaining) [2022-04-18 15:58:08,786 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (63 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (62 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (61 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (60 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (59 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (58 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (57 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (56 of 67 remaining) [2022-04-18 15:58:08,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (55 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (54 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (53 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (52 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (51 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (50 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (49 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (48 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (47 of 67 remaining) [2022-04-18 15:58:08,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (46 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (45 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (44 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (43 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (42 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (41 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (40 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (39 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (38 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (37 of 67 remaining) [2022-04-18 15:58:08,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (36 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (35 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (34 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (33 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (32 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (31 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (30 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (29 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (28 of 67 remaining) [2022-04-18 15:58:08,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (27 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (26 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (25 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (24 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (23 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (22 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (21 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (20 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (19 of 67 remaining) [2022-04-18 15:58:08,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (18 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (17 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (16 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (15 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (14 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (13 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (12 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (11 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (10 of 67 remaining) [2022-04-18 15:58:08,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (9 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (8 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (7 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (6 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (5 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (4 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (3 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr12ASSERT_VIOLATIONDATA_RACE (2 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr13ASSERT_VIOLATIONDATA_RACE (1 of 67 remaining) [2022-04-18 15:58:08,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr14ASSERT_VIOLATIONDATA_RACE (0 of 67 remaining) [2022-04-18 15:58:08,794 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-18 15:58:08,794 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:08,795 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:58:08,795 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:58:08,845 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:58:08,847 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:58:08,847 INFO L340 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 [2022-04-18 15:58:08,847 INFO L341 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2022-04-18 15:58:08,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 428 places, 437 transitions, 906 flow [2022-04-18 15:58:09,036 INFO L129 PetriNetUnfolder]: 22/491 cut-off events. [2022-04-18 15:58:09,037 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:58:09,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 491 events. 22/491 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1701 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 395. Up to 10 conditions per place. [2022-04-18 15:58:09,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 437 transitions, 906 flow [2022-04-18 15:58:09,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 437 transitions, 906 flow [2022-04-18 15:58:09,047 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2022-04-18 15:58:09,047 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:58:09,047 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:09,047 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:09,047 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2022-04-18 15:58:09,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1729633646, now seen corresponding path program 1 times [2022-04-18 15:58:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:09,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706521655] [2022-04-18 15:58:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:09,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706521655] [2022-04-18 15:58:09,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706521655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:09,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:09,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409657586] [2022-04-18 15:58:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:09,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:09,063 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 437 [2022-04-18 15:58:09,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 437 transitions, 906 flow. Second operand has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:09,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 437 [2022-04-18 15:58:09,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:09,591 INFO L129 PetriNetUnfolder]: 284/3855 cut-off events. [2022-04-18 15:58:09,591 INFO L130 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-04-18 15:58:09,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4480 conditions, 3855 events. 284/3855 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 36628 event pairs, 204 based on Foata normal form. 339/3602 useless extension candidates. Maximal degree in co-relation 1396. Up to 328 conditions per place. [2022-04-18 15:58:09,682 INFO L132 encePairwiseOnDemand]: 407/437 looper letters, 15 selfloop transitions, 2 changer transitions 1/399 dead transitions. [2022-04-18 15:58:09,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 399 transitions, 864 flow [2022-04-18 15:58:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2022-04-18 15:58:09,685 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9221967963386728 [2022-04-18 15:58:09,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2022-04-18 15:58:09,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2022-04-18 15:58:09,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2022-04-18 15:58:09,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,689 INFO L186 Difference]: Start difference. First operand has 428 places, 437 transitions, 906 flow. Second operand 3 states and 1209 transitions. [2022-04-18 15:58:09,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 399 transitions, 864 flow [2022-04-18 15:58:09,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 399 transitions, 852 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-04-18 15:58:09,695 INFO L242 Difference]: Finished difference. Result has 402 places, 398 transitions, 820 flow [2022-04-18 15:58:09,695 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=437, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=820, PETRI_PLACES=402, PETRI_TRANSITIONS=398} [2022-04-18 15:58:09,696 INFO L335 CegarLoopForPetriNet]: 428 programPoint places, -26 predicate places. [2022-04-18 15:58:09,696 INFO L478 AbstractCegarLoop]: Abstraction has has 402 places, 398 transitions, 820 flow [2022-04-18 15:58:09,696 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:09,696 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:09,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-18 15:58:09,697 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 79 more)] === [2022-04-18 15:58:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash -784928126, now seen corresponding path program 1 times [2022-04-18 15:58:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:09,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723805304] [2022-04-18 15:58:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:09,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723805304] [2022-04-18 15:58:09,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723805304] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:09,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:09,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:09,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826274482] [2022-04-18 15:58:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:09,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:09,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:09,712 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 437 [2022-04-18 15:58:09,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 398 transitions, 820 flow. Second operand has 3 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:09,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:09,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 437 [2022-04-18 15:58:09,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand