./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c --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/weaver/chl-node-symm.wvr.c -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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:32:59,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:32:59,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:32:59,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:32:59,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:32:59,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:32:59,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:32:59,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:32:59,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:32:59,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:32:59,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:32:59,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:32:59,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:32:59,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:32:59,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:32:59,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:32:59,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:32:59,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:32:59,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:32:59,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:32:59,272 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:32:59,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:32:59,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:32:59,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:32:59,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:32:59,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:32:59,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:32:59,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:32:59,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:32:59,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:32:59,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:32:59,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:32:59,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:32:59,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:32:59,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:32:59,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:32:59,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:32:59,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:32:59,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:32:59,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:32:59,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:32:59,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:32:59,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:32:59,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:32:59,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:32:59,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:32:59,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:32:59,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:32:59,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:32:59,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:32:59,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:32:59,335 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:32:59,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:32:59,336 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:32:59,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:32:59,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:32:59,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:32:59,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:32:59,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:32:59,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:32:59,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:32:59,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:32:59,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:32:59,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:32:59,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:32:59,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:32:59,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:32:59,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:32:59,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:32:59,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:32:59,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:32:59,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:32:59,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:32:59,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-04-18 16:32:59,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:32:59,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:32:59,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:32:59,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:32:59,622 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:32:59,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-04-18 16:32:59,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c3718b9/ed656fc2697c455abacbfb71fb01ed5e/FLAGd8a6455fe [2022-04-18 16:33:00,121 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:33:00,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-04-18 16:33:00,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c3718b9/ed656fc2697c455abacbfb71fb01ed5e/FLAGd8a6455fe [2022-04-18 16:33:00,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c3718b9/ed656fc2697c455abacbfb71fb01ed5e [2022-04-18 16:33:00,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:33:00,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:33:00,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:00,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:33:00,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:33:00,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58bd5b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00, skipping insertion in model container [2022-04-18 16:33:00,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:33:00,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:33:00,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2022-04-18 16:33:00,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:00,753 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:33:00,808 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2022-04-18 16:33:00,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:00,827 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:33:00,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00 WrapperNode [2022-04-18 16:33:00,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:00,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:00,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:33:00,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:33:00,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,910 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 558 [2022-04-18 16:33:00,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:00,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:33:00,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:33:00,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:33:00,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:33:00,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:33:00,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:33:00,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:33:00,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (1/1) ... [2022-04-18 16:33:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:00,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:01,011 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 16:33:01,015 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 16:33:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:33:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:33:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:33:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:33:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:33:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:33:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:33:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:33:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:33:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:33:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:33:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:33:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:33:01,051 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 16:33:01,160 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:33:01,162 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:33:01,896 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:33:01,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:33:01,913 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 16:33:01,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:01 BoogieIcfgContainer [2022-04-18 16:33:01,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:33:01,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:33:01,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:33:01,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:33:01,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:33:00" (1/3) ... [2022-04-18 16:33:01,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e4c53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:01, skipping insertion in model container [2022-04-18 16:33:01,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:00" (2/3) ... [2022-04-18 16:33:01,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e4c53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:01, skipping insertion in model container [2022-04-18 16:33:01,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:01" (3/3) ... [2022-04-18 16:33:01,925 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-04-18 16:33:01,930 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:33:01,930 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:33:01,930 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-04-18 16:33:01,931 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:33:02,070 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 16:33:02,109 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:33:02,115 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 16:33:02,116 INFO L341 AbstractCegarLoop]: Starting to check reachability of 132 error locations. [2022-04-18 16:33:02,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 708 places, 738 transitions, 1492 flow [2022-04-18 16:33:02,357 INFO L129 PetriNetUnfolder]: 37/736 cut-off events. [2022-04-18 16:33:02,357 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 16:33:02,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 736 events. 37/736 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1229 event pairs, 0 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 511. Up to 2 conditions per place. [2022-04-18 16:33:02,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 708 places, 738 transitions, 1492 flow [2022-04-18 16:33:02,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 680 places, 707 transitions, 1426 flow [2022-04-18 16:33:02,385 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2022-04-18 16:33:02,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:33:02,386 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:02,386 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] [2022-04-18 16:33:02,387 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2035769063, now seen corresponding path program 1 times [2022-04-18 16:33:02,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660339613] [2022-04-18 16:33:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:02,554 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 16:33:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:02,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660339613] [2022-04-18 16:33:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660339613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:02,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:02,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293237536] [2022-04-18 16:33:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:02,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:02,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:02,596 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 677 out of 738 [2022-04-18 16:33:02,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 707 transitions, 1426 flow. Second operand has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 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 16:33:02,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:02,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 677 of 738 [2022-04-18 16:33:02,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:03,306 INFO L129 PetriNetUnfolder]: 179/2692 cut-off events. [2022-04-18 16:33:03,307 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-04-18 16:33:03,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2974 conditions, 2692 events. 179/2692 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 17875 event pairs, 99 based on Foata normal form. 51/2219 useless extension candidates. Maximal degree in co-relation 2401. Up to 243 conditions per place. [2022-04-18 16:33:03,336 INFO L132 encePairwiseOnDemand]: 716/738 looper letters, 37 selfloop transitions, 2 changer transitions 11/687 dead transitions. [2022-04-18 16:33:03,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 687 transitions, 1464 flow [2022-04-18 16:33:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2090 transitions. [2022-04-18 16:33:03,354 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9439927732610659 [2022-04-18 16:33:03,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2090 transitions. [2022-04-18 16:33:03,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2090 transitions. [2022-04-18 16:33:03,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:03,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2090 transitions. [2022-04-18 16:33:03,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 0 states have call successors, (0), 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 16:33:03,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:03,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:03,383 INFO L186 Difference]: Start difference. First operand has 680 places, 707 transitions, 1426 flow. Second operand 3 states and 2090 transitions. [2022-04-18 16:33:03,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 687 transitions, 1464 flow [2022-04-18 16:33:03,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 687 transitions, 1456 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 16:33:03,405 INFO L242 Difference]: Finished difference. Result has 677 places, 676 transitions, 1360 flow [2022-04-18 16:33:03,408 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1360, PETRI_PLACES=677, PETRI_TRANSITIONS=676} [2022-04-18 16:33:03,411 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -3 predicate places. [2022-04-18 16:33:03,411 INFO L478 AbstractCegarLoop]: Abstraction has has 677 places, 676 transitions, 1360 flow [2022-04-18 16:33:03,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 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 16:33:03,412 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:03,413 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 16:33:03,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:33:03,413 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash -761689696, now seen corresponding path program 1 times [2022-04-18 16:33:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515967795] [2022-04-18 16:33:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:03,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:03,469 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 16:33:03,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:03,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515967795] [2022-04-18 16:33:03,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515967795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:03,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:03,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35089960] [2022-04-18 16:33:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:03,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:03,478 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 738 [2022-04-18 16:33:03,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 676 transitions, 1360 flow. Second operand has 3 states, 3 states have (on average 681.3333333333334) internal successors, (2044), 3 states have internal predecessors, (2044), 0 states have call successors, (0), 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 16:33:03,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:03,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 738 [2022-04-18 16:33:03,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:03,956 INFO L129 PetriNetUnfolder]: 112/2144 cut-off events. [2022-04-18 16:33:03,956 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-04-18 16:33:03,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 2144 events. 112/2144 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 12647 event pairs, 48 based on Foata normal form. 0/1789 useless extension candidates. Maximal degree in co-relation 2244. Up to 125 conditions per place. [2022-04-18 16:33:03,977 INFO L132 encePairwiseOnDemand]: 727/738 looper letters, 25 selfloop transitions, 1 changer transitions 0/666 dead transitions. [2022-04-18 16:33:03,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 666 transitions, 1392 flow [2022-04-18 16:33:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2076 transitions. [2022-04-18 16:33:03,984 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9376693766937669 [2022-04-18 16:33:03,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2076 transitions. [2022-04-18 16:33:03,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2076 transitions. [2022-04-18 16:33:03,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:03,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2076 transitions. [2022-04-18 16:33:03,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 692.0) internal successors, (2076), 3 states have internal predecessors, (2076), 0 states have call successors, (0), 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 16:33:03,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:03,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:03,997 INFO L186 Difference]: Start difference. First operand has 677 places, 676 transitions, 1360 flow. Second operand 3 states and 2076 transitions. [2022-04-18 16:33:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 666 transitions, 1392 flow [2022-04-18 16:33:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 666 transitions, 1388 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:04,012 INFO L242 Difference]: Finished difference. Result has 656 places, 666 transitions, 1338 flow [2022-04-18 16:33:04,013 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1338, PETRI_PLACES=656, PETRI_TRANSITIONS=666} [2022-04-18 16:33:04,015 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -24 predicate places. [2022-04-18 16:33:04,015 INFO L478 AbstractCegarLoop]: Abstraction has has 656 places, 666 transitions, 1338 flow [2022-04-18 16:33:04,016 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 681.3333333333334) internal successors, (2044), 3 states have internal predecessors, (2044), 0 states have call successors, (0), 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 16:33:04,016 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:04,017 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] [2022-04-18 16:33:04,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:33:04,018 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -533979454, now seen corresponding path program 1 times [2022-04-18 16:33:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720313743] [2022-04-18 16:33:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:04,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:04,083 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 16:33:04,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:04,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720313743] [2022-04-18 16:33:04,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720313743] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:04,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:04,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:04,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136399592] [2022-04-18 16:33:04,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:04,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:04,089 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 677 out of 738 [2022-04-18 16:33:04,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 666 transitions, 1338 flow. Second operand has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 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 16:33:04,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:04,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 677 of 738 [2022-04-18 16:33:04,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:04,727 INFO L129 PetriNetUnfolder]: 179/2680 cut-off events. [2022-04-18 16:33:04,727 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-04-18 16:33:04,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 2680 events. 179/2680 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 17558 event pairs, 99 based on Foata normal form. 0/2210 useless extension candidates. Maximal degree in co-relation 2905. Up to 248 conditions per place. [2022-04-18 16:33:04,750 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 37 selfloop transitions, 2 changer transitions 0/665 dead transitions. [2022-04-18 16:33:04,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 665 transitions, 1414 flow [2022-04-18 16:33:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2071 transitions. [2022-04-18 16:33:04,755 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9354110207768744 [2022-04-18 16:33:04,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2071 transitions. [2022-04-18 16:33:04,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2071 transitions. [2022-04-18 16:33:04,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:04,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2071 transitions. [2022-04-18 16:33:04,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 690.3333333333334) internal successors, (2071), 3 states have internal predecessors, (2071), 0 states have call successors, (0), 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 16:33:04,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:04,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:04,768 INFO L186 Difference]: Start difference. First operand has 656 places, 666 transitions, 1338 flow. Second operand 3 states and 2071 transitions. [2022-04-18 16:33:04,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 665 transitions, 1414 flow [2022-04-18 16:33:04,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 665 transitions, 1413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:04,780 INFO L242 Difference]: Finished difference. Result has 656 places, 665 transitions, 1339 flow [2022-04-18 16:33:04,781 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1339, PETRI_PLACES=656, PETRI_TRANSITIONS=665} [2022-04-18 16:33:04,782 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -24 predicate places. [2022-04-18 16:33:04,782 INFO L478 AbstractCegarLoop]: Abstraction has has 656 places, 665 transitions, 1339 flow [2022-04-18 16:33:04,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 678.3333333333334) internal successors, (2035), 3 states have internal predecessors, (2035), 0 states have call successors, (0), 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 16:33:04,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:04,784 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] [2022-04-18 16:33:04,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:33:04,785 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1647310132, now seen corresponding path program 1 times [2022-04-18 16:33:04,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:04,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028187007] [2022-04-18 16:33:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:04,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:04,823 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 16:33:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028187007] [2022-04-18 16:33:04,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028187007] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:04,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:04,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:04,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728649287] [2022-04-18 16:33:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:04,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:04,829 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 738 [2022-04-18 16:33:04,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 665 transitions, 1339 flow. Second operand has 3 states, 3 states have (on average 681.3333333333334) internal successors, (2044), 3 states have internal predecessors, (2044), 0 states have call successors, (0), 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 16:33:04,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:04,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 738 [2022-04-18 16:33:04,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:05,254 INFO L129 PetriNetUnfolder]: 112/2128 cut-off events. [2022-04-18 16:33:05,254 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-04-18 16:33:05,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 2128 events. 112/2128 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12270 event pairs, 48 based on Foata normal form. 0/1807 useless extension candidates. Maximal degree in co-relation 2233. Up to 127 conditions per place. [2022-04-18 16:33:05,280 INFO L132 encePairwiseOnDemand]: 727/738 looper letters, 25 selfloop transitions, 1 changer transitions 0/655 dead transitions. [2022-04-18 16:33:05,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 655 transitions, 1371 flow [2022-04-18 16:33:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2076 transitions. [2022-04-18 16:33:05,285 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9376693766937669 [2022-04-18 16:33:05,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2076 transitions. [2022-04-18 16:33:05,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2076 transitions. [2022-04-18 16:33:05,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:05,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2076 transitions. [2022-04-18 16:33:05,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 692.0) internal successors, (2076), 3 states have internal predecessors, (2076), 0 states have call successors, (0), 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 16:33:05,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,301 INFO L186 Difference]: Start difference. First operand has 656 places, 665 transitions, 1339 flow. Second operand 3 states and 2076 transitions. [2022-04-18 16:33:05,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 655 transitions, 1371 flow [2022-04-18 16:33:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 655 transitions, 1367 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:05,313 INFO L242 Difference]: Finished difference. Result has 646 places, 655 transitions, 1317 flow [2022-04-18 16:33:05,314 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1317, PETRI_PLACES=646, PETRI_TRANSITIONS=655} [2022-04-18 16:33:05,316 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -34 predicate places. [2022-04-18 16:33:05,318 INFO L478 AbstractCegarLoop]: Abstraction has has 646 places, 655 transitions, 1317 flow [2022-04-18 16:33:05,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 681.3333333333334) internal successors, (2044), 3 states have internal predecessors, (2044), 0 states have call successors, (0), 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 16:33:05,320 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:05,320 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] [2022-04-18 16:33:05,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:33:05,320 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1761214505, now seen corresponding path program 1 times [2022-04-18 16:33:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518889681] [2022-04-18 16:33:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:05,374 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 16:33:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518889681] [2022-04-18 16:33:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518889681] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:05,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:05,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852892691] [2022-04-18 16:33:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:05,377 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:05,381 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:05,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 655 transitions, 1317 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:05,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:05,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:05,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:05,547 INFO L129 PetriNetUnfolder]: 22/830 cut-off events. [2022-04-18 16:33:05,547 INFO L130 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2022-04-18 16:33:05,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 830 events. 22/830 cut-off events. For 2/5 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1749 event pairs, 3 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 825. Up to 23 conditions per place. [2022-04-18 16:33:05,559 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 16 selfloop transitions, 2 changer transitions 0/654 dead transitions. [2022-04-18 16:33:05,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 654 transitions, 1351 flow [2022-04-18 16:33:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2113 transitions. [2022-04-18 16:33:05,565 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9543812104787714 [2022-04-18 16:33:05,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:05,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 0 states have call successors, (0), 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 16:33:05,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,581 INFO L186 Difference]: Start difference. First operand has 646 places, 655 transitions, 1317 flow. Second operand 3 states and 2113 transitions. [2022-04-18 16:33:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 654 transitions, 1351 flow [2022-04-18 16:33:05,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 654 transitions, 1350 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:05,595 INFO L242 Difference]: Finished difference. Result has 646 places, 654 transitions, 1318 flow [2022-04-18 16:33:05,596 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1318, PETRI_PLACES=646, PETRI_TRANSITIONS=654} [2022-04-18 16:33:05,599 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -34 predicate places. [2022-04-18 16:33:05,599 INFO L478 AbstractCegarLoop]: Abstraction has has 646 places, 654 transitions, 1318 flow [2022-04-18 16:33:05,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:05,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:05,602 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] [2022-04-18 16:33:05,602 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:33:05,602 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:05,603 INFO L85 PathProgramCache]: Analyzing trace with hash -378182504, now seen corresponding path program 1 times [2022-04-18 16:33:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:05,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654544434] [2022-04-18 16:33:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:05,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:05,644 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 16:33:05,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:05,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654544434] [2022-04-18 16:33:05,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654544434] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:05,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:05,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:05,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161611747] [2022-04-18 16:33:05,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:05,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:05,650 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:05,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 654 transitions, 1318 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:05,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:05,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:05,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:05,833 INFO L129 PetriNetUnfolder]: 32/955 cut-off events. [2022-04-18 16:33:05,833 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 16:33:05,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 955 events. 32/955 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3178 event pairs, 9 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 970. Up to 35 conditions per place. [2022-04-18 16:33:05,847 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 16 selfloop transitions, 2 changer transitions 0/653 dead transitions. [2022-04-18 16:33:05,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 653 transitions, 1352 flow [2022-04-18 16:33:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2113 transitions. [2022-04-18 16:33:05,853 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9543812104787714 [2022-04-18 16:33:05,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:05,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2113 transitions. [2022-04-18 16:33:05,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 0 states have call successors, (0), 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 16:33:05,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:05,866 INFO L186 Difference]: Start difference. First operand has 646 places, 654 transitions, 1318 flow. Second operand 3 states and 2113 transitions. [2022-04-18 16:33:05,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 653 transitions, 1352 flow [2022-04-18 16:33:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 653 transitions, 1348 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:05,879 INFO L242 Difference]: Finished difference. Result has 645 places, 653 transitions, 1316 flow [2022-04-18 16:33:05,880 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1316, PETRI_PLACES=645, PETRI_TRANSITIONS=653} [2022-04-18 16:33:05,881 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -35 predicate places. [2022-04-18 16:33:05,881 INFO L478 AbstractCegarLoop]: Abstraction has has 645 places, 653 transitions, 1316 flow [2022-04-18 16:33:05,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:05,883 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:05,883 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, 1, 1, 1, 1, 1] [2022-04-18 16:33:05,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:33:05,883 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2071253742, now seen corresponding path program 1 times [2022-04-18 16:33:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:05,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500050320] [2022-04-18 16:33:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:05,921 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 16:33:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:05,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500050320] [2022-04-18 16:33:05,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500050320] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:05,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:05,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:05,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191043728] [2022-04-18 16:33:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:05,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:05,927 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:05,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 653 transitions, 1316 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:05,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:05,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:05,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:06,109 INFO L129 PetriNetUnfolder]: 32/935 cut-off events. [2022-04-18 16:33:06,110 INFO L130 PetriNetUnfolder]: For 2/11 co-relation queries the response was YES. [2022-04-18 16:33:06,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 935 events. 32/935 cut-off events. For 2/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2882 event pairs, 9 based on Foata normal form. 0/815 useless extension candidates. Maximal degree in co-relation 950. Up to 35 conditions per place. [2022-04-18 16:33:06,121 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 16 selfloop transitions, 2 changer transitions 0/652 dead transitions. [2022-04-18 16:33:06,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 652 transitions, 1350 flow [2022-04-18 16:33:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2113 transitions. [2022-04-18 16:33:06,137 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9543812104787714 [2022-04-18 16:33:06,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:06,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 0 states have call successors, (0), 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 16:33:06,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,149 INFO L186 Difference]: Start difference. First operand has 645 places, 653 transitions, 1316 flow. Second operand 3 states and 2113 transitions. [2022-04-18 16:33:06,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 652 transitions, 1350 flow [2022-04-18 16:33:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 652 transitions, 1346 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:06,161 INFO L242 Difference]: Finished difference. Result has 644 places, 652 transitions, 1314 flow [2022-04-18 16:33:06,162 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1314, PETRI_PLACES=644, PETRI_TRANSITIONS=652} [2022-04-18 16:33:06,163 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -36 predicate places. [2022-04-18 16:33:06,163 INFO L478 AbstractCegarLoop]: Abstraction has has 644 places, 652 transitions, 1314 flow [2022-04-18 16:33:06,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:06,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:06,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:33:06,165 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -314030009, now seen corresponding path program 1 times [2022-04-18 16:33:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679024705] [2022-04-18 16:33:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:06,248 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 16:33:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679024705] [2022-04-18 16:33:06,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679024705] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:06,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:06,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323085568] [2022-04-18 16:33:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:06,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:06,256 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:06,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 652 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:06,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:06,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:06,364 INFO L129 PetriNetUnfolder]: 18/669 cut-off events. [2022-04-18 16:33:06,364 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-04-18 16:33:06,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 669 events. 18/669 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1228 event pairs, 3 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 662. Up to 22 conditions per place. [2022-04-18 16:33:06,374 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 15 selfloop transitions, 2 changer transitions 0/651 dead transitions. [2022-04-18 16:33:06,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 651 transitions, 1346 flow [2022-04-18 16:33:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2112 transitions. [2022-04-18 16:33:06,379 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9539295392953929 [2022-04-18 16:33:06,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2112 transitions. [2022-04-18 16:33:06,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2112 transitions. [2022-04-18 16:33:06,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:06,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2112 transitions. [2022-04-18 16:33:06,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.0) internal successors, (2112), 3 states have internal predecessors, (2112), 0 states have call successors, (0), 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 16:33:06,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,389 INFO L186 Difference]: Start difference. First operand has 644 places, 652 transitions, 1314 flow. Second operand 3 states and 2112 transitions. [2022-04-18 16:33:06,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 651 transitions, 1346 flow [2022-04-18 16:33:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 651 transitions, 1342 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:06,402 INFO L242 Difference]: Finished difference. Result has 643 places, 651 transitions, 1312 flow [2022-04-18 16:33:06,403 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=643, PETRI_TRANSITIONS=651} [2022-04-18 16:33:06,404 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -37 predicate places. [2022-04-18 16:33:06,404 INFO L478 AbstractCegarLoop]: Abstraction has has 643 places, 651 transitions, 1312 flow [2022-04-18 16:33:06,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,405 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:06,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:06,405 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:33:06,405 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1721191854, now seen corresponding path program 1 times [2022-04-18 16:33:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:06,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684630681] [2022-04-18 16:33:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:06,464 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 16:33:06,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:06,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684630681] [2022-04-18 16:33:06,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684630681] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:06,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:06,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009510004] [2022-04-18 16:33:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:06,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:06,469 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:06,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 651 transitions, 1312 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:06,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:06,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:06,594 INFO L129 PetriNetUnfolder]: 28/794 cut-off events. [2022-04-18 16:33:06,594 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2022-04-18 16:33:06,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 794 events. 28/794 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1909 event pairs, 9 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 800. Up to 35 conditions per place. [2022-04-18 16:33:06,605 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 16 selfloop transitions, 2 changer transitions 0/650 dead transitions. [2022-04-18 16:33:06,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 650 transitions, 1346 flow [2022-04-18 16:33:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2113 transitions. [2022-04-18 16:33:06,610 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9543812104787714 [2022-04-18 16:33:06,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 0 states have call successors, (0), 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 16:33:06,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,620 INFO L186 Difference]: Start difference. First operand has 643 places, 651 transitions, 1312 flow. Second operand 3 states and 2113 transitions. [2022-04-18 16:33:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 650 transitions, 1346 flow [2022-04-18 16:33:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 650 transitions, 1342 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:06,634 INFO L242 Difference]: Finished difference. Result has 642 places, 650 transitions, 1310 flow [2022-04-18 16:33:06,635 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1310, PETRI_PLACES=642, PETRI_TRANSITIONS=650} [2022-04-18 16:33:06,635 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -38 predicate places. [2022-04-18 16:33:06,636 INFO L478 AbstractCegarLoop]: Abstraction has has 642 places, 650 transitions, 1310 flow [2022-04-18 16:33:06,636 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:06,637 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, 1, 1, 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 16:33:06,637 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 16:33:06,637 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1603049482, now seen corresponding path program 1 times [2022-04-18 16:33:06,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:06,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749024789] [2022-04-18 16:33:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:06,676 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 16:33:06,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:06,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749024789] [2022-04-18 16:33:06,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749024789] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:06,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:06,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021626133] [2022-04-18 16:33:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:06,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:06,681 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:06,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 650 transitions, 1310 flow. Second operand has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:06,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:06,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:06,835 INFO L129 PetriNetUnfolder]: 28/774 cut-off events. [2022-04-18 16:33:06,835 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2022-04-18 16:33:06,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 774 events. 28/774 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1835 event pairs, 9 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 780. Up to 35 conditions per place. [2022-04-18 16:33:06,848 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 16 selfloop transitions, 2 changer transitions 0/649 dead transitions. [2022-04-18 16:33:06,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 649 transitions, 1344 flow [2022-04-18 16:33:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2113 transitions. [2022-04-18 16:33:06,854 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9543812104787714 [2022-04-18 16:33:06,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:06,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2113 transitions. [2022-04-18 16:33:06,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 704.3333333333334) internal successors, (2113), 3 states have internal predecessors, (2113), 0 states have call successors, (0), 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 16:33:06,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:06,863 INFO L186 Difference]: Start difference. First operand has 642 places, 650 transitions, 1310 flow. Second operand 3 states and 2113 transitions. [2022-04-18 16:33:06,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 649 transitions, 1344 flow [2022-04-18 16:33:06,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 649 transitions, 1340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:06,874 INFO L242 Difference]: Finished difference. Result has 641 places, 649 transitions, 1308 flow [2022-04-18 16:33:06,876 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1308, PETRI_PLACES=641, PETRI_TRANSITIONS=649} [2022-04-18 16:33:06,877 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -39 predicate places. [2022-04-18 16:33:06,877 INFO L478 AbstractCegarLoop]: Abstraction has has 641 places, 649 transitions, 1308 flow [2022-04-18 16:33:06,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.3333333333334) internal successors, (2098), 3 states have internal predecessors, (2098), 0 states have call successors, (0), 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 16:33:06,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:06,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:06,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 16:33:06,878 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1990548964, now seen corresponding path program 1 times [2022-04-18 16:33:06,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:06,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874277523] [2022-04-18 16:33:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:06,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:06,938 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 16:33:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:06,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874277523] [2022-04-18 16:33:06,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874277523] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:06,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:06,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:06,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921999464] [2022-04-18 16:33:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:06,940 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:06,943 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 695 out of 738 [2022-04-18 16:33:06,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 649 transitions, 1308 flow. Second operand has 3 states, 3 states have (on average 696.3333333333334) internal successors, (2089), 3 states have internal predecessors, (2089), 0 states have call successors, (0), 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 16:33:06,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:06,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 695 of 738 [2022-04-18 16:33:06,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:07,236 INFO L129 PetriNetUnfolder]: 96/1954 cut-off events. [2022-04-18 16:33:07,236 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-04-18 16:33:07,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1954 events. 96/1954 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10665 event pairs, 48 based on Foata normal form. 0/1664 useless extension candidates. Maximal degree in co-relation 2052. Up to 121 conditions per place. [2022-04-18 16:33:07,256 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 19 selfloop transitions, 2 changer transitions 0/648 dead transitions. [2022-04-18 16:33:07,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 648 transitions, 1348 flow [2022-04-18 16:33:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2107 transitions. [2022-04-18 16:33:07,261 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9516711833785004 [2022-04-18 16:33:07,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2107 transitions. [2022-04-18 16:33:07,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2107 transitions. [2022-04-18 16:33:07,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:07,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2107 transitions. [2022-04-18 16:33:07,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:07,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:07,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:07,270 INFO L186 Difference]: Start difference. First operand has 641 places, 649 transitions, 1308 flow. Second operand 3 states and 2107 transitions. [2022-04-18 16:33:07,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 648 transitions, 1348 flow [2022-04-18 16:33:07,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 648 transitions, 1344 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:07,281 INFO L242 Difference]: Finished difference. Result has 640 places, 648 transitions, 1306 flow [2022-04-18 16:33:07,282 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1306, PETRI_PLACES=640, PETRI_TRANSITIONS=648} [2022-04-18 16:33:07,283 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -40 predicate places. [2022-04-18 16:33:07,283 INFO L478 AbstractCegarLoop]: Abstraction has has 640 places, 648 transitions, 1306 flow [2022-04-18 16:33:07,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 696.3333333333334) internal successors, (2089), 3 states have internal predecessors, (2089), 0 states have call successors, (0), 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 16:33:07,284 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:07,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:07,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 16:33:07,284 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash -829532223, now seen corresponding path program 1 times [2022-04-18 16:33:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:07,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707257346] [2022-04-18 16:33:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:07,419 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 16:33:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:07,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707257346] [2022-04-18 16:33:07,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707257346] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:07,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:07,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642804501] [2022-04-18 16:33:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:07,420 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:07,425 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 601 out of 738 [2022-04-18 16:33:07,427 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 648 transitions, 1306 flow. Second operand has 6 states, 6 states have (on average 602.8333333333334) internal successors, (3617), 6 states have internal predecessors, (3617), 0 states have call successors, (0), 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 16:33:07,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:07,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 601 of 738 [2022-04-18 16:33:07,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:16,400 INFO L129 PetriNetUnfolder]: 13707/52817 cut-off events. [2022-04-18 16:33:16,400 INFO L130 PetriNetUnfolder]: For 62/67 co-relation queries the response was YES. [2022-04-18 16:33:16,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72410 conditions, 52817 events. 13707/52817 cut-off events. For 62/67 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 660956 event pairs, 12300 based on Foata normal form. 0/43760 useless extension candidates. Maximal degree in co-relation 72372. Up to 19545 conditions per place. [2022-04-18 16:33:16,854 INFO L132 encePairwiseOnDemand]: 726/738 looper letters, 104 selfloop transitions, 10 changer transitions 0/646 dead transitions. [2022-04-18 16:33:16,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 646 transitions, 1530 flow [2022-04-18 16:33:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:33:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:33:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3722 transitions. [2022-04-18 16:33:16,862 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8405600722673894 [2022-04-18 16:33:16,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3722 transitions. [2022-04-18 16:33:16,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3722 transitions. [2022-04-18 16:33:16,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:16,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3722 transitions. [2022-04-18 16:33:16,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 620.3333333333334) internal successors, (3722), 6 states have internal predecessors, (3722), 0 states have call successors, (0), 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 16:33:16,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 738.0) internal successors, (5166), 7 states have internal predecessors, (5166), 0 states have call successors, (0), 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 16:33:16,881 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 738.0) internal successors, (5166), 7 states have internal predecessors, (5166), 0 states have call successors, (0), 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 16:33:16,881 INFO L186 Difference]: Start difference. First operand has 640 places, 648 transitions, 1306 flow. Second operand 6 states and 3722 transitions. [2022-04-18 16:33:16,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 646 transitions, 1530 flow [2022-04-18 16:33:16,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 646 transitions, 1526 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:16,894 INFO L242 Difference]: Finished difference. Result has 641 places, 646 transitions, 1318 flow [2022-04-18 16:33:16,896 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1318, PETRI_PLACES=641, PETRI_TRANSITIONS=646} [2022-04-18 16:33:16,898 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -39 predicate places. [2022-04-18 16:33:16,898 INFO L478 AbstractCegarLoop]: Abstraction has has 641 places, 646 transitions, 1318 flow [2022-04-18 16:33:16,899 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 602.8333333333334) internal successors, (3617), 6 states have internal predecessors, (3617), 0 states have call successors, (0), 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 16:33:16,900 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:16,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:16,900 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 16:33:16,901 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash -20522933, now seen corresponding path program 1 times [2022-04-18 16:33:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:16,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017491493] [2022-04-18 16:33:16,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:16,956 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 16:33:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:16,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017491493] [2022-04-18 16:33:16,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017491493] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:16,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:16,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782211470] [2022-04-18 16:33:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:16,959 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:16,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:16,964 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 695 out of 738 [2022-04-18 16:33:16,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 646 transitions, 1318 flow. Second operand has 3 states, 3 states have (on average 696.3333333333334) internal successors, (2089), 3 states have internal predecessors, (2089), 0 states have call successors, (0), 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 16:33:16,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:16,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 695 of 738 [2022-04-18 16:33:16,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:17,253 INFO L129 PetriNetUnfolder]: 90/1902 cut-off events. [2022-04-18 16:33:17,253 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-04-18 16:33:17,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1902 events. 90/1902 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 10170 event pairs, 48 based on Foata normal form. 0/1635 useless extension candidates. Maximal degree in co-relation 2012. Up to 119 conditions per place. [2022-04-18 16:33:17,270 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 19 selfloop transitions, 2 changer transitions 0/645 dead transitions. [2022-04-18 16:33:17,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 645 transitions, 1358 flow [2022-04-18 16:33:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2107 transitions. [2022-04-18 16:33:17,276 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9516711833785004 [2022-04-18 16:33:17,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2107 transitions. [2022-04-18 16:33:17,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2107 transitions. [2022-04-18 16:33:17,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:17,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2107 transitions. [2022-04-18 16:33:17,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:17,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:17,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:17,285 INFO L186 Difference]: Start difference. First operand has 641 places, 646 transitions, 1318 flow. Second operand 3 states and 2107 transitions. [2022-04-18 16:33:17,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 645 transitions, 1358 flow [2022-04-18 16:33:17,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 645 transitions, 1338 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:33:17,296 INFO L242 Difference]: Finished difference. Result has 637 places, 645 transitions, 1300 flow [2022-04-18 16:33:17,297 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1300, PETRI_PLACES=637, PETRI_TRANSITIONS=645} [2022-04-18 16:33:17,298 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -43 predicate places. [2022-04-18 16:33:17,298 INFO L478 AbstractCegarLoop]: Abstraction has has 637 places, 645 transitions, 1300 flow [2022-04-18 16:33:17,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 696.3333333333334) internal successors, (2089), 3 states have internal predecessors, (2089), 0 states have call successors, (0), 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 16:33:17,299 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:17,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:17,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 16:33:17,299 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1997167780, now seen corresponding path program 1 times [2022-04-18 16:33:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466460154] [2022-04-18 16:33:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:17,349 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 16:33:17,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466460154] [2022-04-18 16:33:17,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466460154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:17,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:17,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:17,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257332905] [2022-04-18 16:33:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:17,351 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:17,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:17,354 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 601 out of 738 [2022-04-18 16:33:17,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 645 transitions, 1300 flow. Second operand has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 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 16:33:17,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:17,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 601 of 738 [2022-04-18 16:33:17,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:24,986 INFO L129 PetriNetUnfolder]: 13707/52814 cut-off events. [2022-04-18 16:33:24,986 INFO L130 PetriNetUnfolder]: For 62/67 co-relation queries the response was YES. [2022-04-18 16:33:25,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72405 conditions, 52814 events. 13707/52814 cut-off events. For 62/67 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 660641 event pairs, 12300 based on Foata normal form. 0/43760 useless extension candidates. Maximal degree in co-relation 72367. Up to 19549 conditions per place. [2022-04-18 16:33:25,384 INFO L132 encePairwiseOnDemand]: 732/738 looper letters, 108 selfloop transitions, 4 changer transitions 0/643 dead transitions. [2022-04-18 16:33:25,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 643 transitions, 1520 flow [2022-04-18 16:33:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1917 transitions. [2022-04-18 16:33:25,390 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8658536585365854 [2022-04-18 16:33:25,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1917 transitions. [2022-04-18 16:33:25,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1917 transitions. [2022-04-18 16:33:25,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:25,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1917 transitions. [2022-04-18 16:33:25,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 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 16:33:25,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:25,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:25,404 INFO L186 Difference]: Start difference. First operand has 637 places, 645 transitions, 1300 flow. Second operand 3 states and 1917 transitions. [2022-04-18 16:33:25,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 643 transitions, 1520 flow [2022-04-18 16:33:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 643 transitions, 1516 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:25,415 INFO L242 Difference]: Finished difference. Result has 635 places, 643 transitions, 1300 flow [2022-04-18 16:33:25,416 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1300, PETRI_PLACES=635, PETRI_TRANSITIONS=643} [2022-04-18 16:33:25,417 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -45 predicate places. [2022-04-18 16:33:25,417 INFO L478 AbstractCegarLoop]: Abstraction has has 635 places, 643 transitions, 1300 flow [2022-04-18 16:33:25,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 603.6666666666666) internal successors, (1811), 3 states have internal predecessors, (1811), 0 states have call successors, (0), 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 16:33:25,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:25,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:25,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 16:33:25,419 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 701176221, now seen corresponding path program 1 times [2022-04-18 16:33:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:25,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13545917] [2022-04-18 16:33:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:25,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:25,478 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 16:33:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:25,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13545917] [2022-04-18 16:33:25,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13545917] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:25,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:25,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806372616] [2022-04-18 16:33:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:25,480 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:25,483 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 701 out of 738 [2022-04-18 16:33:25,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 643 transitions, 1300 flow. Second operand has 3 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:25,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:25,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 701 of 738 [2022-04-18 16:33:25,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:25,717 INFO L129 PetriNetUnfolder]: 52/1340 cut-off events. [2022-04-18 16:33:25,717 INFO L130 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-04-18 16:33:25,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 1340 events. 52/1340 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5482 event pairs, 15 based on Foata normal form. 0/1156 useless extension candidates. Maximal degree in co-relation 1379. Up to 45 conditions per place. [2022-04-18 16:33:25,733 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 13 selfloop transitions, 2 changer transitions 0/642 dead transitions. [2022-04-18 16:33:25,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 642 transitions, 1328 flow [2022-04-18 16:33:25,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2119 transitions. [2022-04-18 16:33:25,739 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9570912375790425 [2022-04-18 16:33:25,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2119 transitions. [2022-04-18 16:33:25,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2119 transitions. [2022-04-18 16:33:25,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:25,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2119 transitions. [2022-04-18 16:33:25,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 706.3333333333334) internal successors, (2119), 3 states have internal predecessors, (2119), 0 states have call successors, (0), 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 16:33:25,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:25,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:25,748 INFO L186 Difference]: Start difference. First operand has 635 places, 643 transitions, 1300 flow. Second operand 3 states and 2119 transitions. [2022-04-18 16:33:25,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 642 transitions, 1328 flow [2022-04-18 16:33:25,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 642 transitions, 1320 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:25,760 INFO L242 Difference]: Finished difference. Result has 634 places, 642 transitions, 1294 flow [2022-04-18 16:33:25,761 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1294, PETRI_PLACES=634, PETRI_TRANSITIONS=642} [2022-04-18 16:33:25,762 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -46 predicate places. [2022-04-18 16:33:25,762 INFO L478 AbstractCegarLoop]: Abstraction has has 634 places, 642 transitions, 1294 flow [2022-04-18 16:33:25,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:25,763 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:25,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:25,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 16:33:25,763 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1337178642, now seen corresponding path program 1 times [2022-04-18 16:33:25,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:25,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587283485] [2022-04-18 16:33:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:25,821 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 16:33:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587283485] [2022-04-18 16:33:25,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587283485] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:25,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:25,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174777207] [2022-04-18 16:33:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:25,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:25,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:25,829 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 701 out of 738 [2022-04-18 16:33:25,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 642 transitions, 1294 flow. Second operand has 3 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:25,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:25,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 701 of 738 [2022-04-18 16:33:25,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:26,123 INFO L129 PetriNetUnfolder]: 54/1322 cut-off events. [2022-04-18 16:33:26,124 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-04-18 16:33:26,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1322 events. 54/1322 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5479 event pairs, 15 based on Foata normal form. 0/1140 useless extension candidates. Maximal degree in co-relation 1344. Up to 48 conditions per place. [2022-04-18 16:33:26,136 INFO L132 encePairwiseOnDemand]: 735/738 looper letters, 13 selfloop transitions, 2 changer transitions 0/641 dead transitions. [2022-04-18 16:33:26,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 641 transitions, 1322 flow [2022-04-18 16:33:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2119 transitions. [2022-04-18 16:33:26,140 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9570912375790425 [2022-04-18 16:33:26,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2119 transitions. [2022-04-18 16:33:26,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2119 transitions. [2022-04-18 16:33:26,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:26,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2119 transitions. [2022-04-18 16:33:26,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 706.3333333333334) internal successors, (2119), 3 states have internal predecessors, (2119), 0 states have call successors, (0), 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 16:33:26,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,149 INFO L186 Difference]: Start difference. First operand has 634 places, 642 transitions, 1294 flow. Second operand 3 states and 2119 transitions. [2022-04-18 16:33:26,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 641 transitions, 1322 flow [2022-04-18 16:33:26,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 641 transitions, 1318 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:26,158 INFO L242 Difference]: Finished difference. Result has 633 places, 641 transitions, 1292 flow [2022-04-18 16:33:26,159 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1292, PETRI_PLACES=633, PETRI_TRANSITIONS=641} [2022-04-18 16:33:26,160 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -47 predicate places. [2022-04-18 16:33:26,160 INFO L478 AbstractCegarLoop]: Abstraction has has 633 places, 641 transitions, 1292 flow [2022-04-18 16:33:26,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 702.3333333333334) internal successors, (2107), 3 states have internal predecessors, (2107), 0 states have call successors, (0), 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 16:33:26,161 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:26,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:26,161 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 16:33:26,161 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1919866384, now seen corresponding path program 1 times [2022-04-18 16:33:26,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:26,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71272724] [2022-04-18 16:33:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:26,221 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 16:33:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:26,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71272724] [2022-04-18 16:33:26,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71272724] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:26,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:26,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087422812] [2022-04-18 16:33:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:26,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:26,226 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:26,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 641 transitions, 1292 flow. Second operand has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 3 states have internal predecessors, (2099), 0 states have call successors, (0), 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 16:33:26,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:26,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:26,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:26,485 INFO L129 PetriNetUnfolder]: 66/1655 cut-off events. [2022-04-18 16:33:26,485 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-04-18 16:33:26,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 1655 events. 66/1655 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 7952 event pairs, 16 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 1695. Up to 61 conditions per place. [2022-04-18 16:33:26,502 INFO L132 encePairwiseOnDemand]: 732/738 looper letters, 15 selfloop transitions, 2 changer transitions 0/640 dead transitions. [2022-04-18 16:33:26,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 640 transitions, 1325 flow [2022-04-18 16:33:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2115 transitions. [2022-04-18 16:33:26,508 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9552845528455285 [2022-04-18 16:33:26,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:26,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.0) internal successors, (2115), 3 states have internal predecessors, (2115), 0 states have call successors, (0), 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 16:33:26,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,516 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,516 INFO L186 Difference]: Start difference. First operand has 633 places, 641 transitions, 1292 flow. Second operand 3 states and 2115 transitions. [2022-04-18 16:33:26,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 640 transitions, 1325 flow [2022-04-18 16:33:26,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 640 transitions, 1321 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:26,529 INFO L242 Difference]: Finished difference. Result has 630 places, 639 transitions, 1294 flow [2022-04-18 16:33:26,530 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1294, PETRI_PLACES=630, PETRI_TRANSITIONS=639} [2022-04-18 16:33:26,531 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -50 predicate places. [2022-04-18 16:33:26,531 INFO L478 AbstractCegarLoop]: Abstraction has has 630 places, 639 transitions, 1294 flow [2022-04-18 16:33:26,532 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 699.6666666666666) internal successors, (2099), 3 states have internal predecessors, (2099), 0 states have call successors, (0), 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 16:33:26,532 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:26,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:26,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-18 16:33:26,532 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash -644072562, now seen corresponding path program 1 times [2022-04-18 16:33:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:26,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583080728] [2022-04-18 16:33:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:26,598 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 16:33:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:26,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583080728] [2022-04-18 16:33:26,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583080728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:26,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:26,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240697505] [2022-04-18 16:33:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:26,600 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:26,603 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 738 [2022-04-18 16:33:26,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 639 transitions, 1294 flow. Second operand has 3 states, 3 states have (on average 700.0) internal successors, (2100), 3 states have internal predecessors, (2100), 0 states have call successors, (0), 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 16:33:26,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:26,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 738 [2022-04-18 16:33:26,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:26,838 INFO L129 PetriNetUnfolder]: 66/1705 cut-off events. [2022-04-18 16:33:26,839 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 16:33:26,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 1705 events. 66/1705 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8610 event pairs, 15 based on Foata normal form. 0/1506 useless extension candidates. Maximal degree in co-relation 1751. Up to 62 conditions per place. [2022-04-18 16:33:26,854 INFO L132 encePairwiseOnDemand]: 732/738 looper letters, 15 selfloop transitions, 2 changer transitions 0/638 dead transitions. [2022-04-18 16:33:26,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 638 transitions, 1327 flow [2022-04-18 16:33:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2115 transitions. [2022-04-18 16:33:26,860 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9552845528455285 [2022-04-18 16:33:26,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:26,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2115 transitions. [2022-04-18 16:33:26,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.0) internal successors, (2115), 3 states have internal predecessors, (2115), 0 states have call successors, (0), 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 16:33:26,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 738.0) internal successors, (2952), 4 states have internal predecessors, (2952), 0 states have call successors, (0), 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 16:33:26,867 INFO L186 Difference]: Start difference. First operand has 630 places, 639 transitions, 1294 flow. Second operand 3 states and 2115 transitions. [2022-04-18 16:33:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 638 transitions, 1327 flow [2022-04-18 16:33:26,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 638 transitions, 1327 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:26,881 INFO L242 Difference]: Finished difference. Result has 629 places, 637 transitions, 1300 flow [2022-04-18 16:33:26,882 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1300, PETRI_PLACES=629, PETRI_TRANSITIONS=637} [2022-04-18 16:33:26,882 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -51 predicate places. [2022-04-18 16:33:26,882 INFO L478 AbstractCegarLoop]: Abstraction has has 629 places, 637 transitions, 1300 flow [2022-04-18 16:33:26,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 700.0) internal successors, (2100), 3 states have internal predecessors, (2100), 0 states have call successors, (0), 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 16:33:26,883 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:26,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:26,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 16:33:26,884 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash 830181942, now seen corresponding path program 1 times [2022-04-18 16:33:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:26,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442507196] [2022-04-18 16:33:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:26,982 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 16:33:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:26,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442507196] [2022-04-18 16:33:26,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442507196] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:26,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:26,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 16:33:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463808565] [2022-04-18 16:33:26,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:26,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:33:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:33:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-18 16:33:26,990 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 630 out of 738 [2022-04-18 16:33:26,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 637 transitions, 1300 flow. Second operand has 7 states, 7 states have (on average 634.5714285714286) internal successors, (4442), 7 states have internal predecessors, (4442), 0 states have call successors, (0), 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 16:33:26,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:26,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 630 of 738 [2022-04-18 16:33:26,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:28,662 INFO L129 PetriNetUnfolder]: 1002/8753 cut-off events. [2022-04-18 16:33:28,663 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-04-18 16:33:28,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10524 conditions, 8753 events. 1002/8753 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 86912 event pairs, 720 based on Foata normal form. 0/7424 useless extension candidates. Maximal degree in co-relation 10482. Up to 845 conditions per place. [2022-04-18 16:33:28,710 INFO L132 encePairwiseOnDemand]: 728/738 looper letters, 162 selfloop transitions, 9 changer transitions 0/723 dead transitions. [2022-04-18 16:33:28,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 723 transitions, 1818 flow [2022-04-18 16:33:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-18 16:33:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-04-18 16:33:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5212 transitions. [2022-04-18 16:33:28,721 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8827913279132791 [2022-04-18 16:33:28,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5212 transitions. [2022-04-18 16:33:28,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5212 transitions. [2022-04-18 16:33:28,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:28,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5212 transitions. [2022-04-18 16:33:28,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 651.5) internal successors, (5212), 8 states have internal predecessors, (5212), 0 states have call successors, (0), 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 16:33:28,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 738.0) internal successors, (6642), 9 states have internal predecessors, (6642), 0 states have call successors, (0), 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 16:33:28,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 738.0) internal successors, (6642), 9 states have internal predecessors, (6642), 0 states have call successors, (0), 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 16:33:28,740 INFO L186 Difference]: Start difference. First operand has 629 places, 637 transitions, 1300 flow. Second operand 8 states and 5212 transitions. [2022-04-18 16:33:28,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 723 transitions, 1818 flow [2022-04-18 16:33:28,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 723 transitions, 1818 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:28,752 INFO L242 Difference]: Finished difference. Result has 641 places, 643 transitions, 1357 flow [2022-04-18 16:33:28,753 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=738, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1357, PETRI_PLACES=641, PETRI_TRANSITIONS=643} [2022-04-18 16:33:28,754 INFO L335 CegarLoopForPetriNet]: 680 programPoint places, -39 predicate places. [2022-04-18 16:33:28,754 INFO L478 AbstractCegarLoop]: Abstraction has has 641 places, 643 transitions, 1357 flow [2022-04-18 16:33:28,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 634.5714285714286) internal successors, (4442), 7 states have internal predecessors, (4442), 0 states have call successors, (0), 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 16:33:28,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:28,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:28,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 16:33:28,756 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 128 more)] === [2022-04-18 16:33:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 379248821, now seen corresponding path program 1 times [2022-04-18 16:33:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403286242] [2022-04-18 16:33:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:28,896 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 16:33:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403286242] [2022-04-18 16:33:28,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403286242] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:28,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:28,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555561868] [2022-04-18 16:33:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:28,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:28,903 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 738 [2022-04-18 16:33:28,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 643 transitions, 1357 flow. Second operand has 6 states, 6 states have (on average 611.5) internal successors, (3669), 6 states have internal predecessors, (3669), 0 states have call successors, (0), 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 16:33:28,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:28,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 738 [2022-04-18 16:33:28,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:45,434 INFO L129 PetriNetUnfolder]: 29858/113459 cut-off events. [2022-04-18 16:33:45,434 INFO L130 PetriNetUnfolder]: For 148/158 co-relation queries the response was YES. [2022-04-18 16:33:46,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156819 conditions, 113459 events. 29858/113459 cut-off events. For 148/158 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 1584859 event pairs, 8230 based on Foata normal form. 0/97391 useless extension candidates. Maximal degree in co-relation 156771. Up to 40836 conditions per place.