./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.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/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:36:06,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:36:06,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:36:06,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:36:06,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:36:06,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:36:06,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:36:06,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:36:06,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:36:06,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:36:06,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:36:06,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:36:06,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:36:06,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:36:06,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:36:06,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:36:06,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:36:06,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:36:06,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:36:06,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:36:06,433 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:36:06,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:36:06,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:36:06,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:36:06,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:36:06,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:36:06,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:36:06,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:36:06,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:36:06,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:36:06,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:36:06,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:36:06,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:36:06,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:36:06,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:36:06,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:36:06,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:36:06,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:36:06,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:36:06,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:36:06,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:36:06,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:36:06,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:36:06,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:36:06,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:36:06,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:36:06,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:36:06,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:36:06,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:36:06,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:36:06,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:36:06,472 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:36:06,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:36:06,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:36:06,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:36:06,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:36:06,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:36:06,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:36:06,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:36:06,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:36:06,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:36:06,474 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:36:06,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:36:06,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:36:06,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:36:06,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:36:06,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:36:06,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:36:06,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:36:06,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:36:06,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:36:06,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:36:06,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:36:06,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-04-18 16:36:06,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:36:06,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:36:06,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:36:06,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:36:06,699 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:36:06,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2022-04-18 16:36:06,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc3d6c4e/17315ebb58ab4c3f9d1915aacd8ff978/FLAG287b65033 [2022-04-18 16:36:07,138 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:36:07,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2022-04-18 16:36:07,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc3d6c4e/17315ebb58ab4c3f9d1915aacd8ff978/FLAG287b65033 [2022-04-18 16:36:07,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfc3d6c4e/17315ebb58ab4c3f9d1915aacd8ff978 [2022-04-18 16:36:07,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:36:07,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:36:07,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:36:07,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:36:07,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:36:07,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f026810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07, skipping insertion in model container [2022-04-18 16:36:07,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:36:07,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:36:07,445 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-04-18 16:36:07,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:36:07,466 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:36:07,512 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-04-18 16:36:07,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:36:07,543 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:36:07,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07 WrapperNode [2022-04-18 16:36:07,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:36:07,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:36:07,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:36:07,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:36:07,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,617 INFO L137 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 819 [2022-04-18 16:36:07,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:36:07,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:36:07,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:36:07,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:36:07,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:36:07,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:36:07,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:36:07,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:36:07,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (1/1) ... [2022-04-18 16:36:07,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:36:07,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:36:07,739 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 16:36:07,757 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 16:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 16:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:36:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 16:36:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:36:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:36:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:36:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:36:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 16:36:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:36:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:36:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:36:07,778 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 16:36:07,903 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:36:07,904 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:36:08,638 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:36:09,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:36:09,172 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-04-18 16:36:09,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:36:09 BoogieIcfgContainer [2022-04-18 16:36:09,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:36:09,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:36:09,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:36:09,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:36:09,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:36:07" (1/3) ... [2022-04-18 16:36:09,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218c861b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:36:09, skipping insertion in model container [2022-04-18 16:36:09,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:36:07" (2/3) ... [2022-04-18 16:36:09,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218c861b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:36:09, skipping insertion in model container [2022-04-18 16:36:09,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:36:09" (3/3) ... [2022-04-18 16:36:09,182 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-04-18 16:36:09,186 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:36:09,186 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:36:09,186 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 130 error locations. [2022-04-18 16:36:09,187 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:36:09,387 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 16:36:09,426 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:36:09,432 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 16:36:09,432 INFO L341 AbstractCegarLoop]: Starting to check reachability of 225 error locations. [2022-04-18 16:36:09,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 785 places, 816 transitions, 1656 flow [2022-04-18 16:36:09,620 INFO L129 PetriNetUnfolder]: 41/813 cut-off events. [2022-04-18 16:36:09,620 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 16:36:09,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 813 events. 41/813 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1567 event pairs, 0 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 565. Up to 2 conditions per place. [2022-04-18 16:36:09,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 785 places, 816 transitions, 1656 flow [2022-04-18 16:36:09,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 763 places, 793 transitions, 1604 flow [2022-04-18 16:36:09,647 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2022-04-18 16:36:09,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:36:09,647 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:09,648 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] [2022-04-18 16:36:09,648 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:09,652 INFO L85 PathProgramCache]: Analyzing trace with hash 886127106, now seen corresponding path program 1 times [2022-04-18 16:36:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:09,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952840957] [2022-04-18 16:36:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:09,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:09,806 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 16:36:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952840957] [2022-04-18 16:36:09,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952840957] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:09,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:09,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764291527] [2022-04-18 16:36:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:09,816 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:09,840 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 720 out of 816 [2022-04-18 16:36:09,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 793 transitions, 1604 flow. Second operand has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:09,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:09,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 720 of 816 [2022-04-18 16:36:09,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:10,166 INFO L129 PetriNetUnfolder]: 38/845 cut-off events. [2022-04-18 16:36:10,167 INFO L130 PetriNetUnfolder]: For 24/29 co-relation queries the response was YES. [2022-04-18 16:36:10,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 845 events. 38/845 cut-off events. For 24/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2029 event pairs, 12 based on Foata normal form. 52/756 useless extension candidates. Maximal degree in co-relation 571. Up to 47 conditions per place. [2022-04-18 16:36:10,177 INFO L132 encePairwiseOnDemand]: 736/816 looper letters, 14 selfloop transitions, 2 changer transitions 12/715 dead transitions. [2022-04-18 16:36:10,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 715 transitions, 1480 flow [2022-04-18 16:36:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2254 transitions. [2022-04-18 16:36:10,196 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.920751633986928 [2022-04-18 16:36:10,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2254 transitions. [2022-04-18 16:36:10,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2254 transitions. [2022-04-18 16:36:10,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:10,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2254 transitions. [2022-04-18 16:36:10,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 751.3333333333334) internal successors, (2254), 3 states have internal predecessors, (2254), 0 states have call successors, (0), 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 16:36:10,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:10,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:10,223 INFO L186 Difference]: Start difference. First operand has 763 places, 793 transitions, 1604 flow. Second operand 3 states and 2254 transitions. [2022-04-18 16:36:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 715 transitions, 1480 flow [2022-04-18 16:36:10,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 715 transitions, 1468 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-04-18 16:36:10,242 INFO L242 Difference]: Finished difference. Result has 707 places, 703 transitions, 1416 flow [2022-04-18 16:36:10,244 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1416, PETRI_PLACES=707, PETRI_TRANSITIONS=703} [2022-04-18 16:36:10,248 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -56 predicate places. [2022-04-18 16:36:10,248 INFO L478 AbstractCegarLoop]: Abstraction has has 707 places, 703 transitions, 1416 flow [2022-04-18 16:36:10,250 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:10,250 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:10,250 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] [2022-04-18 16:36:10,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:36:10,251 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:10,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash 564247477, now seen corresponding path program 1 times [2022-04-18 16:36:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288990212] [2022-04-18 16:36:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:10,295 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 16:36:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288990212] [2022-04-18 16:36:10,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288990212] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:10,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:10,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037443679] [2022-04-18 16:36:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:10,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:10,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:10,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:10,302 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 816 [2022-04-18 16:36:10,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 703 transitions, 1416 flow. Second operand has 3 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 16:36:10,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:10,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 816 [2022-04-18 16:36:10,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:10,620 INFO L129 PetriNetUnfolder]: 162/1148 cut-off events. [2022-04-18 16:36:10,621 INFO L130 PetriNetUnfolder]: For 5/17 co-relation queries the response was YES. [2022-04-18 16:36:10,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 1148 events. 162/1148 cut-off events. For 5/17 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4546 event pairs, 108 based on Foata normal form. 0/975 useless extension candidates. Maximal degree in co-relation 1423. Up to 258 conditions per place. [2022-04-18 16:36:10,640 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 29 selfloop transitions, 2 changer transitions 0/702 dead transitions. [2022-04-18 16:36:10,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 702 transitions, 1476 flow [2022-04-18 16:36:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2147 transitions. [2022-04-18 16:36:10,644 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8770424836601307 [2022-04-18 16:36:10,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2147 transitions. [2022-04-18 16:36:10,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2147 transitions. [2022-04-18 16:36:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:10,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2147 transitions. [2022-04-18 16:36:10,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.6666666666666) internal successors, (2147), 3 states have internal predecessors, (2147), 0 states have call successors, (0), 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 16:36:10,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:10,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:10,654 INFO L186 Difference]: Start difference. First operand has 707 places, 703 transitions, 1416 flow. Second operand 3 states and 2147 transitions. [2022-04-18 16:36:10,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 702 transitions, 1476 flow [2022-04-18 16:36:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 702 transitions, 1472 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:10,665 INFO L242 Difference]: Finished difference. Result has 694 places, 702 transitions, 1414 flow [2022-04-18 16:36:10,666 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1414, PETRI_PLACES=694, PETRI_TRANSITIONS=702} [2022-04-18 16:36:10,666 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -69 predicate places. [2022-04-18 16:36:10,667 INFO L478 AbstractCegarLoop]: Abstraction has has 694 places, 702 transitions, 1414 flow [2022-04-18 16:36:10,668 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 16:36:10,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:10,668 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] [2022-04-18 16:36:10,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:36:10,668 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1043351597, now seen corresponding path program 1 times [2022-04-18 16:36:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:10,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873211001] [2022-04-18 16:36:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:10,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:10,725 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 16:36:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873211001] [2022-04-18 16:36:10,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873211001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:10,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:10,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794600097] [2022-04-18 16:36:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:10,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:10,730 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 708 out of 816 [2022-04-18 16:36:10,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 702 transitions, 1414 flow. Second operand has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:10,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:10,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 708 of 816 [2022-04-18 16:36:10,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:11,033 INFO L129 PetriNetUnfolder]: 132/1088 cut-off events. [2022-04-18 16:36:11,033 INFO L130 PetriNetUnfolder]: For 6/16 co-relation queries the response was YES. [2022-04-18 16:36:11,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 1088 events. 132/1088 cut-off events. For 6/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4142 event pairs, 60 based on Foata normal form. 0/939 useless extension candidates. Maximal degree in co-relation 1288. Up to 151 conditions per place. [2022-04-18 16:36:11,052 INFO L132 encePairwiseOnDemand]: 809/816 looper letters, 26 selfloop transitions, 3 changer transitions 0/703 dead transitions. [2022-04-18 16:36:11,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 703 transitions, 1476 flow [2022-04-18 16:36:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2157 transitions. [2022-04-18 16:36:11,057 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8811274509803921 [2022-04-18 16:36:11,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2157 transitions. [2022-04-18 16:36:11,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2157 transitions. [2022-04-18 16:36:11,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:11,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2157 transitions. [2022-04-18 16:36:11,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 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 16:36:11,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:11,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:11,066 INFO L186 Difference]: Start difference. First operand has 694 places, 702 transitions, 1414 flow. Second operand 3 states and 2157 transitions. [2022-04-18 16:36:11,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 703 transitions, 1476 flow [2022-04-18 16:36:11,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 703 transitions, 1472 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:11,078 INFO L242 Difference]: Finished difference. Result has 690 places, 698 transitions, 1408 flow [2022-04-18 16:36:11,079 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1408, PETRI_PLACES=690, PETRI_TRANSITIONS=698} [2022-04-18 16:36:11,081 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -73 predicate places. [2022-04-18 16:36:11,081 INFO L478 AbstractCegarLoop]: Abstraction has has 690 places, 698 transitions, 1408 flow [2022-04-18 16:36:11,082 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:11,083 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:11,083 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] [2022-04-18 16:36:11,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:36:11,083 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1700076901, now seen corresponding path program 1 times [2022-04-18 16:36:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358639522] [2022-04-18 16:36:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:11,130 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 16:36:11,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:11,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358639522] [2022-04-18 16:36:11,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358639522] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:11,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:11,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081431367] [2022-04-18 16:36:11,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:11,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:11,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:11,134 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 690 out of 816 [2022-04-18 16:36:11,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 698 transitions, 1408 flow. Second operand has 3 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 0 states have call successors, (0), 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 16:36:11,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:11,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 690 of 816 [2022-04-18 16:36:11,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:11,736 INFO L129 PetriNetUnfolder]: 645/2945 cut-off events. [2022-04-18 16:36:11,738 INFO L130 PetriNetUnfolder]: For 222/227 co-relation queries the response was YES. [2022-04-18 16:36:11,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 2945 events. 645/2945 cut-off events. For 222/227 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 18186 event pairs, 402 based on Foata normal form. 0/2460 useless extension candidates. Maximal degree in co-relation 3609. Up to 917 conditions per place. [2022-04-18 16:36:11,761 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 44 selfloop transitions, 2 changer transitions 0/697 dead transitions. [2022-04-18 16:36:11,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 697 transitions, 1498 flow [2022-04-18 16:36:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2117 transitions. [2022-04-18 16:36:11,768 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8647875816993464 [2022-04-18 16:36:11,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2117 transitions. [2022-04-18 16:36:11,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2117 transitions. [2022-04-18 16:36:11,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:11,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2117 transitions. [2022-04-18 16:36:11,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.6666666666666) internal successors, (2117), 3 states have internal predecessors, (2117), 0 states have call successors, (0), 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 16:36:11,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:11,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:11,784 INFO L186 Difference]: Start difference. First operand has 690 places, 698 transitions, 1408 flow. Second operand 3 states and 2117 transitions. [2022-04-18 16:36:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 697 transitions, 1498 flow [2022-04-18 16:36:11,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 697 transitions, 1492 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:11,794 INFO L242 Difference]: Finished difference. Result has 689 places, 697 transitions, 1404 flow [2022-04-18 16:36:11,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1404, PETRI_PLACES=689, PETRI_TRANSITIONS=697} [2022-04-18 16:36:11,797 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -74 predicate places. [2022-04-18 16:36:11,797 INFO L478 AbstractCegarLoop]: Abstraction has has 689 places, 697 transitions, 1404 flow [2022-04-18 16:36:11,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 691.3333333333334) internal successors, (2074), 3 states have internal predecessors, (2074), 0 states have call successors, (0), 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 16:36:11,799 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:11,799 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] [2022-04-18 16:36:11,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:36:11,799 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash -244830580, now seen corresponding path program 1 times [2022-04-18 16:36:11,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:11,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468020630] [2022-04-18 16:36:11,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:11,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:11,854 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 16:36:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:11,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468020630] [2022-04-18 16:36:11,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468020630] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:11,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:11,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35502234] [2022-04-18 16:36:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:11,856 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:11,859 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 714 out of 816 [2022-04-18 16:36:11,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 697 transitions, 1404 flow. Second operand has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:11,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:11,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 714 of 816 [2022-04-18 16:36:11,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:12,098 INFO L129 PetriNetUnfolder]: 38/820 cut-off events. [2022-04-18 16:36:12,099 INFO L130 PetriNetUnfolder]: For 5/10 co-relation queries the response was YES. [2022-04-18 16:36:12,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 820 events. 38/820 cut-off events. For 5/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1903 event pairs, 12 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 828. Up to 53 conditions per place. [2022-04-18 16:36:12,106 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 20 selfloop transitions, 2 changer transitions 0/696 dead transitions. [2022-04-18 16:36:12,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 696 transitions, 1446 flow [2022-04-18 16:36:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2165 transitions. [2022-04-18 16:36:12,110 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843954248366013 [2022-04-18 16:36:12,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2165 transitions. [2022-04-18 16:36:12,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2165 transitions. [2022-04-18 16:36:12,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:12,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2165 transitions. [2022-04-18 16:36:12,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:12,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:12,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:12,120 INFO L186 Difference]: Start difference. First operand has 689 places, 697 transitions, 1404 flow. Second operand 3 states and 2165 transitions. [2022-04-18 16:36:12,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 696 transitions, 1446 flow [2022-04-18 16:36:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 696 transitions, 1442 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:12,129 INFO L242 Difference]: Finished difference. Result has 688 places, 696 transitions, 1402 flow [2022-04-18 16:36:12,130 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1402, PETRI_PLACES=688, PETRI_TRANSITIONS=696} [2022-04-18 16:36:12,131 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -75 predicate places. [2022-04-18 16:36:12,131 INFO L478 AbstractCegarLoop]: Abstraction has has 688 places, 696 transitions, 1402 flow [2022-04-18 16:36:12,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:12,133 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:12,133 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] [2022-04-18 16:36:12,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:36:12,133 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1855256213, now seen corresponding path program 1 times [2022-04-18 16:36:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:12,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948229806] [2022-04-18 16:36:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:12,159 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 16:36:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:12,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948229806] [2022-04-18 16:36:12,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948229806] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:12,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:12,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025116392] [2022-04-18 16:36:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:12,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:12,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:12,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:12,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:12,164 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:12,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 696 transitions, 1402 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:12,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:12,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:12,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:12,440 INFO L129 PetriNetUnfolder]: 56/1272 cut-off events. [2022-04-18 16:36:12,441 INFO L130 PetriNetUnfolder]: For 9/13 co-relation queries the response was YES. [2022-04-18 16:36:12,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 1272 events. 56/1272 cut-off events. For 9/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4616 event pairs, 10 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 1284. Up to 34 conditions per place. [2022-04-18 16:36:12,451 INFO L132 encePairwiseOnDemand]: 811/816 looper letters, 22 selfloop transitions, 3 changer transitions 0/702 dead transitions. [2022-04-18 16:36:12,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 702 transitions, 1468 flow [2022-04-18 16:36:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2178 transitions. [2022-04-18 16:36:12,454 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8897058823529411 [2022-04-18 16:36:12,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2178 transitions. [2022-04-18 16:36:12,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2178 transitions. [2022-04-18 16:36:12,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:12,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2178 transitions. [2022-04-18 16:36:12,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 726.0) internal successors, (2178), 3 states have internal predecessors, (2178), 0 states have call successors, (0), 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 16:36:12,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:12,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:12,462 INFO L186 Difference]: Start difference. First operand has 688 places, 696 transitions, 1402 flow. Second operand 3 states and 2178 transitions. [2022-04-18 16:36:12,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 702 transitions, 1468 flow [2022-04-18 16:36:12,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 702 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:12,470 INFO L242 Difference]: Finished difference. Result has 688 places, 696 transitions, 1414 flow [2022-04-18 16:36:12,471 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1414, PETRI_PLACES=688, PETRI_TRANSITIONS=696} [2022-04-18 16:36:12,472 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -75 predicate places. [2022-04-18 16:36:12,472 INFO L478 AbstractCegarLoop]: Abstraction has has 688 places, 696 transitions, 1414 flow [2022-04-18 16:36:12,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:12,473 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:12,473 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] [2022-04-18 16:36:12,473 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:36:12,473 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1819770719, now seen corresponding path program 1 times [2022-04-18 16:36:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:12,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515814490] [2022-04-18 16:36:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:12,497 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 16:36:12,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:12,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515814490] [2022-04-18 16:36:12,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515814490] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:12,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:12,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001430808] [2022-04-18 16:36:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:12,499 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:12,501 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 816 [2022-04-18 16:36:12,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 696 transitions, 1414 flow. Second operand has 3 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 16:36:12,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:12,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 816 [2022-04-18 16:36:12,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:13,039 INFO L129 PetriNetUnfolder]: 424/3632 cut-off events. [2022-04-18 16:36:13,039 INFO L130 PetriNetUnfolder]: For 246/274 co-relation queries the response was YES. [2022-04-18 16:36:13,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 3632 events. 424/3632 cut-off events. For 246/274 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 25612 event pairs, 245 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 2258. Up to 543 conditions per place. [2022-04-18 16:36:13,067 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 29 selfloop transitions, 2 changer transitions 0/695 dead transitions. [2022-04-18 16:36:13,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 695 transitions, 1474 flow [2022-04-18 16:36:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-04-18 16:36:13,072 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8766339869281046 [2022-04-18 16:36:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-04-18 16:36:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-04-18 16:36:13,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:13,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-04-18 16:36:13,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:13,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:13,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:13,079 INFO L186 Difference]: Start difference. First operand has 688 places, 696 transitions, 1414 flow. Second operand 3 states and 2146 transitions. [2022-04-18 16:36:13,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 695 transitions, 1474 flow [2022-04-18 16:36:13,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 695 transitions, 1468 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:13,087 INFO L242 Difference]: Finished difference. Result has 687 places, 695 transitions, 1410 flow [2022-04-18 16:36:13,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1410, PETRI_PLACES=687, PETRI_TRANSITIONS=695} [2022-04-18 16:36:13,089 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -76 predicate places. [2022-04-18 16:36:13,089 INFO L478 AbstractCegarLoop]: Abstraction has has 687 places, 695 transitions, 1410 flow [2022-04-18 16:36:13,090 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 16:36:13,090 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:13,090 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] [2022-04-18 16:36:13,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:36:13,090 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash -688807574, now seen corresponding path program 1 times [2022-04-18 16:36:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:13,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123805409] [2022-04-18 16:36:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:13,121 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 16:36:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:13,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123805409] [2022-04-18 16:36:13,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123805409] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:13,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:13,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:13,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073906919] [2022-04-18 16:36:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:13,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:13,125 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:13,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 695 transitions, 1410 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:13,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:13,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:13,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:13,362 INFO L129 PetriNetUnfolder]: 46/860 cut-off events. [2022-04-18 16:36:13,363 INFO L130 PetriNetUnfolder]: For 18/28 co-relation queries the response was YES. [2022-04-18 16:36:13,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 860 events. 46/860 cut-off events. For 18/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2282 event pairs, 17 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 879. Up to 64 conditions per place. [2022-04-18 16:36:13,368 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 18 selfloop transitions, 2 changer transitions 0/694 dead transitions. [2022-04-18 16:36:13,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 694 transitions, 1448 flow [2022-04-18 16:36:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2171 transitions. [2022-04-18 16:36:13,372 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8868464052287581 [2022-04-18 16:36:13,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2171 transitions. [2022-04-18 16:36:13,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2171 transitions. [2022-04-18 16:36:13,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:13,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2171 transitions. [2022-04-18 16:36:13,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 0 states have call successors, (0), 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 16:36:13,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:13,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:13,378 INFO L186 Difference]: Start difference. First operand has 687 places, 695 transitions, 1410 flow. Second operand 3 states and 2171 transitions. [2022-04-18 16:36:13,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 694 transitions, 1448 flow [2022-04-18 16:36:13,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 694 transitions, 1444 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:13,386 INFO L242 Difference]: Finished difference. Result has 686 places, 694 transitions, 1408 flow [2022-04-18 16:36:13,387 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1408, PETRI_PLACES=686, PETRI_TRANSITIONS=694} [2022-04-18 16:36:13,388 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -77 predicate places. [2022-04-18 16:36:13,388 INFO L478 AbstractCegarLoop]: Abstraction has has 686 places, 694 transitions, 1408 flow [2022-04-18 16:36:13,388 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:13,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:13,389 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] [2022-04-18 16:36:13,389 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:36:13,389 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash -148196107, now seen corresponding path program 1 times [2022-04-18 16:36:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:13,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940481184] [2022-04-18 16:36:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:13,414 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 16:36:13,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940481184] [2022-04-18 16:36:13,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940481184] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:13,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:13,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081418468] [2022-04-18 16:36:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:13,415 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:13,418 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 714 out of 816 [2022-04-18 16:36:13,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 694 transitions, 1408 flow. Second operand has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:13,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:13,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 714 of 816 [2022-04-18 16:36:13,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:13,975 INFO L129 PetriNetUnfolder]: 164/3054 cut-off events. [2022-04-18 16:36:13,975 INFO L130 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-04-18 16:36:13,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 3054 events. 164/3054 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 20031 event pairs, 74 based on Foata normal form. 0/2474 useless extension candidates. Maximal degree in co-relation 3204. Up to 184 conditions per place. [2022-04-18 16:36:13,995 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 21 selfloop transitions, 2 changer transitions 0/693 dead transitions. [2022-04-18 16:36:13,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 693 transitions, 1452 flow [2022-04-18 16:36:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2165 transitions. [2022-04-18 16:36:13,999 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843954248366013 [2022-04-18 16:36:13,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2165 transitions. [2022-04-18 16:36:13,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2165 transitions. [2022-04-18 16:36:14,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:14,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2165 transitions. [2022-04-18 16:36:14,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:14,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:14,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:14,006 INFO L186 Difference]: Start difference. First operand has 686 places, 694 transitions, 1408 flow. Second operand 3 states and 2165 transitions. [2022-04-18 16:36:14,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 693 transitions, 1452 flow [2022-04-18 16:36:14,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 693 transitions, 1448 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:14,013 INFO L242 Difference]: Finished difference. Result has 685 places, 693 transitions, 1406 flow [2022-04-18 16:36:14,014 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1406, PETRI_PLACES=685, PETRI_TRANSITIONS=693} [2022-04-18 16:36:14,014 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -78 predicate places. [2022-04-18 16:36:14,014 INFO L478 AbstractCegarLoop]: Abstraction has has 685 places, 693 transitions, 1406 flow [2022-04-18 16:36:14,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:14,015 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:14,015 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] [2022-04-18 16:36:14,015 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 16:36:14,015 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:14,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2044904497, now seen corresponding path program 1 times [2022-04-18 16:36:14,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:14,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142444375] [2022-04-18 16:36:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:14,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:14,036 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 16:36:14,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:14,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142444375] [2022-04-18 16:36:14,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142444375] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:14,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:14,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:14,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555895682] [2022-04-18 16:36:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:14,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:14,051 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 708 out of 816 [2022-04-18 16:36:14,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 693 transitions, 1406 flow. Second operand has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:14,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:14,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 708 of 816 [2022-04-18 16:36:14,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:14,565 INFO L129 PetriNetUnfolder]: 276/2680 cut-off events. [2022-04-18 16:36:14,565 INFO L130 PetriNetUnfolder]: For 84/94 co-relation queries the response was YES. [2022-04-18 16:36:14,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 2680 events. 276/2680 cut-off events. For 84/94 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 17896 event pairs, 170 based on Foata normal form. 0/2171 useless extension candidates. Maximal degree in co-relation 3060. Up to 376 conditions per place. [2022-04-18 16:36:14,592 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 27 selfloop transitions, 2 changer transitions 0/692 dead transitions. [2022-04-18 16:36:14,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 692 transitions, 1462 flow [2022-04-18 16:36:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2153 transitions. [2022-04-18 16:36:14,596 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8794934640522876 [2022-04-18 16:36:14,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2153 transitions. [2022-04-18 16:36:14,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2153 transitions. [2022-04-18 16:36:14,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:14,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2153 transitions. [2022-04-18 16:36:14,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 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 16:36:14,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:14,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:14,603 INFO L186 Difference]: Start difference. First operand has 685 places, 693 transitions, 1406 flow. Second operand 3 states and 2153 transitions. [2022-04-18 16:36:14,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 692 transitions, 1462 flow [2022-04-18 16:36:14,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 692 transitions, 1458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:14,611 INFO L242 Difference]: Finished difference. Result has 684 places, 692 transitions, 1404 flow [2022-04-18 16:36:14,612 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1404, PETRI_PLACES=684, PETRI_TRANSITIONS=692} [2022-04-18 16:36:14,613 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -79 predicate places. [2022-04-18 16:36:14,613 INFO L478 AbstractCegarLoop]: Abstraction has has 684 places, 692 transitions, 1404 flow [2022-04-18 16:36:14,613 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:14,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:14,614 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] [2022-04-18 16:36:14,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 16:36:14,614 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:14,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash -968822054, now seen corresponding path program 1 times [2022-04-18 16:36:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:14,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204288775] [2022-04-18 16:36:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:14,635 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 16:36:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:14,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204288775] [2022-04-18 16:36:14,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204288775] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:14,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:14,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108459741] [2022-04-18 16:36:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:14,637 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:14,639 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 816 [2022-04-18 16:36:14,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 692 transitions, 1404 flow. Second operand has 3 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 16:36:14,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:14,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 816 [2022-04-18 16:36:14,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:15,109 INFO L129 PetriNetUnfolder]: 177/3325 cut-off events. [2022-04-18 16:36:15,110 INFO L130 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-04-18 16:36:15,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 3325 events. 177/3325 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 22676 event pairs, 74 based on Foata normal form. 0/2686 useless extension candidates. Maximal degree in co-relation 3470. Up to 193 conditions per place. [2022-04-18 16:36:15,137 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 30 selfloop transitions, 2 changer transitions 0/691 dead transitions. [2022-04-18 16:36:15,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 691 transitions, 1466 flow [2022-04-18 16:36:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2147 transitions. [2022-04-18 16:36:15,140 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8770424836601307 [2022-04-18 16:36:15,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2147 transitions. [2022-04-18 16:36:15,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2147 transitions. [2022-04-18 16:36:15,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:15,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2147 transitions. [2022-04-18 16:36:15,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.6666666666666) internal successors, (2147), 3 states have internal predecessors, (2147), 0 states have call successors, (0), 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 16:36:15,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:15,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:15,146 INFO L186 Difference]: Start difference. First operand has 684 places, 692 transitions, 1404 flow. Second operand 3 states and 2147 transitions. [2022-04-18 16:36:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 691 transitions, 1466 flow [2022-04-18 16:36:15,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 691 transitions, 1462 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:15,153 INFO L242 Difference]: Finished difference. Result has 683 places, 691 transitions, 1402 flow [2022-04-18 16:36:15,154 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1402, PETRI_PLACES=683, PETRI_TRANSITIONS=691} [2022-04-18 16:36:15,154 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -80 predicate places. [2022-04-18 16:36:15,154 INFO L478 AbstractCegarLoop]: Abstraction has has 683 places, 691 transitions, 1402 flow [2022-04-18 16:36:15,155 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 16:36:15,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:15,155 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] [2022-04-18 16:36:15,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 16:36:15,155 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:15,155 INFO L85 PathProgramCache]: Analyzing trace with hash 191627274, now seen corresponding path program 1 times [2022-04-18 16:36:15,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:15,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318524785] [2022-04-18 16:36:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:15,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:15,173 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 16:36:15,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:15,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318524785] [2022-04-18 16:36:15,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318524785] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:15,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:15,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022454969] [2022-04-18 16:36:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:15,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:15,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:15,176 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 714 out of 816 [2022-04-18 16:36:15,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 691 transitions, 1402 flow. Second operand has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:15,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:15,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 714 of 816 [2022-04-18 16:36:15,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:15,554 INFO L129 PetriNetUnfolder]: 151/2518 cut-off events. [2022-04-18 16:36:15,554 INFO L130 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-04-18 16:36:15,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 2518 events. 151/2518 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 14821 event pairs, 74 based on Foata normal form. 0/2056 useless extension candidates. Maximal degree in co-relation 2647. Up to 184 conditions per place. [2022-04-18 16:36:15,577 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 21 selfloop transitions, 2 changer transitions 0/690 dead transitions. [2022-04-18 16:36:15,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 690 transitions, 1446 flow [2022-04-18 16:36:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2165 transitions. [2022-04-18 16:36:15,580 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843954248366013 [2022-04-18 16:36:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2165 transitions. [2022-04-18 16:36:15,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2165 transitions. [2022-04-18 16:36:15,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:15,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2165 transitions. [2022-04-18 16:36:15,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:15,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:15,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:15,587 INFO L186 Difference]: Start difference. First operand has 683 places, 691 transitions, 1402 flow. Second operand 3 states and 2165 transitions. [2022-04-18 16:36:15,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 690 transitions, 1446 flow [2022-04-18 16:36:15,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 690 transitions, 1442 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:15,595 INFO L242 Difference]: Finished difference. Result has 682 places, 690 transitions, 1400 flow [2022-04-18 16:36:15,596 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1400, PETRI_PLACES=682, PETRI_TRANSITIONS=690} [2022-04-18 16:36:15,597 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -81 predicate places. [2022-04-18 16:36:15,597 INFO L478 AbstractCegarLoop]: Abstraction has has 682 places, 690 transitions, 1400 flow [2022-04-18 16:36:15,597 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:15,598 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:15,598 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] [2022-04-18 16:36:15,598 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 16:36:15,598 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2045797410, now seen corresponding path program 1 times [2022-04-18 16:36:15,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:15,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906283206] [2022-04-18 16:36:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:15,625 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 16:36:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:15,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906283206] [2022-04-18 16:36:15,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906283206] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:15,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:15,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081391327] [2022-04-18 16:36:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:15,626 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:15,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:15,628 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:15,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 690 transitions, 1400 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:15,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:15,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:15,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:16,059 INFO L129 PetriNetUnfolder]: 138/3010 cut-off events. [2022-04-18 16:36:16,060 INFO L130 PetriNetUnfolder]: For 42/52 co-relation queries the response was YES. [2022-04-18 16:36:16,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 3010 events. 138/3010 cut-off events. For 42/52 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 19755 event pairs, 55 based on Foata normal form. 0/2454 useless extension candidates. Maximal degree in co-relation 3081. Up to 139 conditions per place. [2022-04-18 16:36:16,087 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 17 selfloop transitions, 1 changer transitions 0/688 dead transitions. [2022-04-18 16:36:16,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 688 transitions, 1432 flow [2022-04-18 16:36:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2170 transitions. [2022-04-18 16:36:16,091 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.886437908496732 [2022-04-18 16:36:16,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2170 transitions. [2022-04-18 16:36:16,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2170 transitions. [2022-04-18 16:36:16,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:16,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2170 transitions. [2022-04-18 16:36:16,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.3333333333334) internal successors, (2170), 3 states have internal predecessors, (2170), 0 states have call successors, (0), 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 16:36:16,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:16,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:16,097 INFO L186 Difference]: Start difference. First operand has 682 places, 690 transitions, 1400 flow. Second operand 3 states and 2170 transitions. [2022-04-18 16:36:16,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 688 transitions, 1432 flow [2022-04-18 16:36:16,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 688 transitions, 1428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:16,105 INFO L242 Difference]: Finished difference. Result has 680 places, 688 transitions, 1394 flow [2022-04-18 16:36:16,106 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1394, PETRI_PLACES=680, PETRI_TRANSITIONS=688} [2022-04-18 16:36:16,106 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -83 predicate places. [2022-04-18 16:36:16,107 INFO L478 AbstractCegarLoop]: Abstraction has has 680 places, 688 transitions, 1394 flow [2022-04-18 16:36:16,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:16,108 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:16,108 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] [2022-04-18 16:36:16,108 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 16:36:16,108 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1370046255, now seen corresponding path program 1 times [2022-04-18 16:36:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:16,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776494983] [2022-04-18 16:36:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:16,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:16,140 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 16:36:16,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:16,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776494983] [2022-04-18 16:36:16,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776494983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:16,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:16,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:16,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929000942] [2022-04-18 16:36:16,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:16,142 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:16,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:16,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:16,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:16,144 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 711 out of 816 [2022-04-18 16:36:16,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 688 transitions, 1394 flow. Second operand has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 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 16:36:16,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:16,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 711 of 816 [2022-04-18 16:36:16,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:16,608 INFO L129 PetriNetUnfolder]: 320/3048 cut-off events. [2022-04-18 16:36:16,609 INFO L130 PetriNetUnfolder]: For 126/136 co-relation queries the response was YES. [2022-04-18 16:36:16,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 3048 events. 320/3048 cut-off events. For 126/136 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 20201 event pairs, 188 based on Foata normal form. 0/2488 useless extension candidates. Maximal degree in co-relation 3442. Up to 421 conditions per place. [2022-04-18 16:36:16,626 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 24 selfloop transitions, 2 changer transitions 0/687 dead transitions. [2022-04-18 16:36:16,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 687 transitions, 1444 flow [2022-04-18 16:36:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2159 transitions. [2022-04-18 16:36:16,630 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8819444444444444 [2022-04-18 16:36:16,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2159 transitions. [2022-04-18 16:36:16,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2159 transitions. [2022-04-18 16:36:16,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:16,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2159 transitions. [2022-04-18 16:36:16,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 719.6666666666666) internal successors, (2159), 3 states have internal predecessors, (2159), 0 states have call successors, (0), 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 16:36:16,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:16,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:16,639 INFO L186 Difference]: Start difference. First operand has 680 places, 688 transitions, 1394 flow. Second operand 3 states and 2159 transitions. [2022-04-18 16:36:16,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 687 transitions, 1444 flow [2022-04-18 16:36:16,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 687 transitions, 1443 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:36:16,646 INFO L242 Difference]: Finished difference. Result has 680 places, 687 transitions, 1395 flow [2022-04-18 16:36:16,647 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=678, 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=1395, PETRI_PLACES=680, PETRI_TRANSITIONS=687} [2022-04-18 16:36:16,648 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -83 predicate places. [2022-04-18 16:36:16,648 INFO L478 AbstractCegarLoop]: Abstraction has has 680 places, 687 transitions, 1395 flow [2022-04-18 16:36:16,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 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 16:36:16,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:16,649 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] [2022-04-18 16:36:16,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 16:36:16,649 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:16,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:16,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1122665438, now seen corresponding path program 1 times [2022-04-18 16:36:16,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:16,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698231024] [2022-04-18 16:36:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:16,763 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 16:36:16,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:16,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698231024] [2022-04-18 16:36:16,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698231024] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:16,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:16,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:36:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040107921] [2022-04-18 16:36:16,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:16,764 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:36:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:36:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:36:16,767 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 816 [2022-04-18 16:36:16,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 687 transitions, 1395 flow. Second operand has 6 states, 6 states have (on average 587.8333333333334) internal successors, (3527), 6 states have internal predecessors, (3527), 0 states have call successors, (0), 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 16:36:16,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:16,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 816 [2022-04-18 16:36:16,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:28,573 INFO L129 PetriNetUnfolder]: 29019/65835 cut-off events. [2022-04-18 16:36:28,573 INFO L130 PetriNetUnfolder]: For 5284/5284 co-relation queries the response was YES. [2022-04-18 16:36:28,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109904 conditions, 65835 events. 29019/65835 cut-off events. For 5284/5284 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 676366 event pairs, 24554 based on Foata normal form. 0/55087 useless extension candidates. Maximal degree in co-relation 109794. Up to 38943 conditions per place. [2022-04-18 16:36:29,196 INFO L132 encePairwiseOnDemand]: 792/816 looper letters, 128 selfloop transitions, 20 changer transitions 0/683 dead transitions. [2022-04-18 16:36:29,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 683 transitions, 1683 flow [2022-04-18 16:36:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:36:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:36:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3667 transitions. [2022-04-18 16:36:29,201 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7489787581699346 [2022-04-18 16:36:29,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3667 transitions. [2022-04-18 16:36:29,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3667 transitions. [2022-04-18 16:36:29,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:29,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3667 transitions. [2022-04-18 16:36:29,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 611.1666666666666) internal successors, (3667), 6 states have internal predecessors, (3667), 0 states have call successors, (0), 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 16:36:29,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 0 states have call successors, (0), 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 16:36:29,211 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 816.0) internal successors, (5712), 7 states have internal predecessors, (5712), 0 states have call successors, (0), 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 16:36:29,211 INFO L186 Difference]: Start difference. First operand has 680 places, 687 transitions, 1395 flow. Second operand 6 states and 3667 transitions. [2022-04-18 16:36:29,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 683 transitions, 1683 flow [2022-04-18 16:36:29,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 683 transitions, 1679 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:29,222 INFO L242 Difference]: Finished difference. Result has 679 places, 683 transitions, 1423 flow [2022-04-18 16:36:29,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1423, PETRI_PLACES=679, PETRI_TRANSITIONS=683} [2022-04-18 16:36:29,223 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -84 predicate places. [2022-04-18 16:36:29,223 INFO L478 AbstractCegarLoop]: Abstraction has has 679 places, 683 transitions, 1423 flow [2022-04-18 16:36:29,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 587.8333333333334) internal successors, (3527), 6 states have internal predecessors, (3527), 0 states have call successors, (0), 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 16:36:29,224 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:29,224 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] [2022-04-18 16:36:29,224 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 16:36:29,224 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 884959823, now seen corresponding path program 1 times [2022-04-18 16:36:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233832201] [2022-04-18 16:36:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:29,253 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 16:36:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:29,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233832201] [2022-04-18 16:36:29,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233832201] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:29,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:29,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:29,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231377051] [2022-04-18 16:36:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:29,256 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:29,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:29,258 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 711 out of 816 [2022-04-18 16:36:29,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 683 transitions, 1423 flow. Second operand has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 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 16:36:29,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:29,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 711 of 816 [2022-04-18 16:36:29,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:29,597 INFO L129 PetriNetUnfolder]: 190/2360 cut-off events. [2022-04-18 16:36:29,597 INFO L130 PetriNetUnfolder]: For 58/68 co-relation queries the response was YES. [2022-04-18 16:36:29,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 2360 events. 190/2360 cut-off events. For 58/68 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 14876 event pairs, 105 based on Foata normal form. 0/1962 useless extension candidates. Maximal degree in co-relation 2630. Up to 245 conditions per place. [2022-04-18 16:36:29,621 INFO L132 encePairwiseOnDemand]: 811/816 looper letters, 21 selfloop transitions, 1 changer transitions 0/679 dead transitions. [2022-04-18 16:36:29,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 679 transitions, 1459 flow [2022-04-18 16:36:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2158 transitions. [2022-04-18 16:36:29,625 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8815359477124183 [2022-04-18 16:36:29,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2158 transitions. [2022-04-18 16:36:29,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2158 transitions. [2022-04-18 16:36:29,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:29,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2158 transitions. [2022-04-18 16:36:29,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 719.3333333333334) internal successors, (2158), 3 states have internal predecessors, (2158), 0 states have call successors, (0), 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 16:36:29,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:29,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:29,632 INFO L186 Difference]: Start difference. First operand has 679 places, 683 transitions, 1423 flow. Second operand 3 states and 2158 transitions. [2022-04-18 16:36:29,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 679 transitions, 1459 flow [2022-04-18 16:36:29,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 679 transitions, 1419 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:36:29,640 INFO L242 Difference]: Finished difference. Result has 672 places, 679 transitions, 1377 flow [2022-04-18 16:36:29,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1377, PETRI_PLACES=672, PETRI_TRANSITIONS=679} [2022-04-18 16:36:29,641 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -91 predicate places. [2022-04-18 16:36:29,641 INFO L478 AbstractCegarLoop]: Abstraction has has 672 places, 679 transitions, 1377 flow [2022-04-18 16:36:29,642 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 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 16:36:29,642 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:29,642 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] [2022-04-18 16:36:29,642 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 16:36:29,643 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 568352447, now seen corresponding path program 1 times [2022-04-18 16:36:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:29,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026547485] [2022-04-18 16:36:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:29,674 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 16:36:29,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:29,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026547485] [2022-04-18 16:36:29,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026547485] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:29,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:29,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:29,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963899091] [2022-04-18 16:36:29,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:29,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:29,678 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 714 out of 816 [2022-04-18 16:36:29,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 679 transitions, 1377 flow. Second operand has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:29,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:29,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 714 of 816 [2022-04-18 16:36:29,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:30,038 INFO L129 PetriNetUnfolder]: 261/2240 cut-off events. [2022-04-18 16:36:30,039 INFO L130 PetriNetUnfolder]: For 84/94 co-relation queries the response was YES. [2022-04-18 16:36:30,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 2240 events. 261/2240 cut-off events. For 84/94 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13948 event pairs, 170 based on Foata normal form. 0/1831 useless extension candidates. Maximal degree in co-relation 2578. Up to 355 conditions per place. [2022-04-18 16:36:30,060 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 21 selfloop transitions, 2 changer transitions 0/678 dead transitions. [2022-04-18 16:36:30,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 678 transitions, 1421 flow [2022-04-18 16:36:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2165 transitions. [2022-04-18 16:36:30,064 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843954248366013 [2022-04-18 16:36:30,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2165 transitions. [2022-04-18 16:36:30,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2165 transitions. [2022-04-18 16:36:30,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:30,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2165 transitions. [2022-04-18 16:36:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:30,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,070 INFO L186 Difference]: Start difference. First operand has 672 places, 679 transitions, 1377 flow. Second operand 3 states and 2165 transitions. [2022-04-18 16:36:30,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 678 transitions, 1421 flow [2022-04-18 16:36:30,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 678 transitions, 1420 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:36:30,078 INFO L242 Difference]: Finished difference. Result has 672 places, 678 transitions, 1378 flow [2022-04-18 16:36:30,079 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1378, PETRI_PLACES=672, PETRI_TRANSITIONS=678} [2022-04-18 16:36:30,079 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -91 predicate places. [2022-04-18 16:36:30,079 INFO L478 AbstractCegarLoop]: Abstraction has has 672 places, 678 transitions, 1378 flow [2022-04-18 16:36:30,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:30,080 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:30,080 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] [2022-04-18 16:36:30,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-18 16:36:30,081 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1820373389, now seen corresponding path program 1 times [2022-04-18 16:36:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991391273] [2022-04-18 16:36:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:30,106 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 16:36:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991391273] [2022-04-18 16:36:30,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991391273] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:30,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:30,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164542418] [2022-04-18 16:36:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:30,107 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:30,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:30,109 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 720 out of 816 [2022-04-18 16:36:30,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 678 transitions, 1378 flow. Second operand has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:30,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:30,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 720 of 816 [2022-04-18 16:36:30,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:30,242 INFO L129 PetriNetUnfolder]: 46/841 cut-off events. [2022-04-18 16:36:30,242 INFO L130 PetriNetUnfolder]: For 18/28 co-relation queries the response was YES. [2022-04-18 16:36:30,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 841 events. 46/841 cut-off events. For 18/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2184 event pairs, 17 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 822. Up to 59 conditions per place. [2022-04-18 16:36:30,249 INFO L132 encePairwiseOnDemand]: 814/816 looper letters, 15 selfloop transitions, 1 changer transitions 0/677 dead transitions. [2022-04-18 16:36:30,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 677 transitions, 1408 flow [2022-04-18 16:36:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2176 transitions. [2022-04-18 16:36:30,252 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-04-18 16:36:30,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2176 transitions. [2022-04-18 16:36:30,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2176 transitions. [2022-04-18 16:36:30,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:30,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2176 transitions. [2022-04-18 16:36:30,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 725.3333333333334) internal successors, (2176), 3 states have internal predecessors, (2176), 0 states have call successors, (0), 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 16:36:30,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,260 INFO L186 Difference]: Start difference. First operand has 672 places, 678 transitions, 1378 flow. Second operand 3 states and 2176 transitions. [2022-04-18 16:36:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 677 transitions, 1408 flow [2022-04-18 16:36:30,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 677 transitions, 1404 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:30,268 INFO L242 Difference]: Finished difference. Result has 671 places, 677 transitions, 1374 flow [2022-04-18 16:36:30,269 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1374, PETRI_PLACES=671, PETRI_TRANSITIONS=677} [2022-04-18 16:36:30,269 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -92 predicate places. [2022-04-18 16:36:30,269 INFO L478 AbstractCegarLoop]: Abstraction has has 671 places, 677 transitions, 1374 flow [2022-04-18 16:36:30,270 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:30,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:30,270 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] [2022-04-18 16:36:30,270 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 16:36:30,271 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:30,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2031411190, now seen corresponding path program 1 times [2022-04-18 16:36:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123242777] [2022-04-18 16:36:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:30,305 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 16:36:30,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123242777] [2022-04-18 16:36:30,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123242777] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:30,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:30,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:30,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710132174] [2022-04-18 16:36:30,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:30,307 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:30,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:30,309 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 720 out of 816 [2022-04-18 16:36:30,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 677 transitions, 1374 flow. Second operand has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:30,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:30,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 720 of 816 [2022-04-18 16:36:30,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:30,496 INFO L129 PetriNetUnfolder]: 46/840 cut-off events. [2022-04-18 16:36:30,497 INFO L130 PetriNetUnfolder]: For 18/28 co-relation queries the response was YES. [2022-04-18 16:36:30,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 840 events. 46/840 cut-off events. For 18/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2190 event pairs, 17 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 822. Up to 61 conditions per place. [2022-04-18 16:36:30,504 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 15 selfloop transitions, 2 changer transitions 0/676 dead transitions. [2022-04-18 16:36:30,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 676 transitions, 1406 flow [2022-04-18 16:36:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2177 transitions. [2022-04-18 16:36:30,507 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.889297385620915 [2022-04-18 16:36:30,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2177 transitions. [2022-04-18 16:36:30,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2177 transitions. [2022-04-18 16:36:30,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:30,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2177 transitions. [2022-04-18 16:36:30,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 725.6666666666666) internal successors, (2177), 3 states have internal predecessors, (2177), 0 states have call successors, (0), 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 16:36:30,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:30,512 INFO L186 Difference]: Start difference. First operand has 671 places, 677 transitions, 1374 flow. Second operand 3 states and 2177 transitions. [2022-04-18 16:36:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 676 transitions, 1406 flow [2022-04-18 16:36:30,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 676 transitions, 1405 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:36:30,520 INFO L242 Difference]: Finished difference. Result has 671 places, 676 transitions, 1375 flow [2022-04-18 16:36:30,522 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1375, PETRI_PLACES=671, PETRI_TRANSITIONS=676} [2022-04-18 16:36:30,522 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -92 predicate places. [2022-04-18 16:36:30,522 INFO L478 AbstractCegarLoop]: Abstraction has has 671 places, 676 transitions, 1375 flow [2022-04-18 16:36:30,523 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 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 16:36:30,523 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:30,523 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] [2022-04-18 16:36:30,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 16:36:30,523 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1058654897, now seen corresponding path program 1 times [2022-04-18 16:36:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:30,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209442002] [2022-04-18 16:36:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:30,629 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 16:36:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209442002] [2022-04-18 16:36:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209442002] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:30,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:30,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222285952] [2022-04-18 16:36:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:30,630 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:30,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:30,631 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 816 [2022-04-18 16:36:30,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 676 transitions, 1375 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 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 16:36:30,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:30,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 816 [2022-04-18 16:36:30,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:42,409 INFO L129 PetriNetUnfolder]: 29019/65558 cut-off events. [2022-04-18 16:36:42,409 INFO L130 PetriNetUnfolder]: For 5284/5284 co-relation queries the response was YES. [2022-04-18 16:36:42,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109595 conditions, 65558 events. 29019/65558 cut-off events. For 5284/5284 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 670699 event pairs, 24554 based on Foata normal form. 0/55087 useless extension candidates. Maximal degree in co-relation 109485. Up to 38927 conditions per place. [2022-04-18 16:36:42,860 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 112 selfloop transitions, 2 changer transitions 0/675 dead transitions. [2022-04-18 16:36:42,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 675 transitions, 1601 flow [2022-04-18 16:36:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1971 transitions. [2022-04-18 16:36:42,864 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8051470588235294 [2022-04-18 16:36:42,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1971 transitions. [2022-04-18 16:36:42,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1971 transitions. [2022-04-18 16:36:42,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:42,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1971 transitions. [2022-04-18 16:36:42,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 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 16:36:42,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:42,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:42,874 INFO L186 Difference]: Start difference. First operand has 671 places, 676 transitions, 1375 flow. Second operand 3 states and 1971 transitions. [2022-04-18 16:36:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 675 transitions, 1601 flow [2022-04-18 16:36:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 675 transitions, 1597 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:42,885 INFO L242 Difference]: Finished difference. Result has 670 places, 675 transitions, 1373 flow [2022-04-18 16:36:42,885 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1373, PETRI_PLACES=670, PETRI_TRANSITIONS=675} [2022-04-18 16:36:42,886 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -93 predicate places. [2022-04-18 16:36:42,886 INFO L478 AbstractCegarLoop]: Abstraction has has 670 places, 675 transitions, 1373 flow [2022-04-18 16:36:42,886 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 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 16:36:42,886 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:42,886 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] [2022-04-18 16:36:42,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-18 16:36:42,887 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1173006240, now seen corresponding path program 1 times [2022-04-18 16:36:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:42,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511110613] [2022-04-18 16:36:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:42,922 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 16:36:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:42,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511110613] [2022-04-18 16:36:42,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511110613] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:42,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:42,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964132016] [2022-04-18 16:36:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:42,923 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:42,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:42,925 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:42,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 675 transitions, 1373 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:42,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:42,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:42,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:43,141 INFO L129 PetriNetUnfolder]: 138/1238 cut-off events. [2022-04-18 16:36:43,142 INFO L130 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-04-18 16:36:43,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 1238 events. 138/1238 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4646 event pairs, 74 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 1458. Up to 181 conditions per place. [2022-04-18 16:36:43,151 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 18 selfloop transitions, 2 changer transitions 0/674 dead transitions. [2022-04-18 16:36:43,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 674 transitions, 1411 flow [2022-04-18 16:36:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2171 transitions. [2022-04-18 16:36:43,154 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8868464052287581 [2022-04-18 16:36:43,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2171 transitions. [2022-04-18 16:36:43,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2171 transitions. [2022-04-18 16:36:43,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:43,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2171 transitions. [2022-04-18 16:36:43,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 0 states have call successors, (0), 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 16:36:43,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:43,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:43,159 INFO L186 Difference]: Start difference. First operand has 670 places, 675 transitions, 1373 flow. Second operand 3 states and 2171 transitions. [2022-04-18 16:36:43,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 674 transitions, 1411 flow [2022-04-18 16:36:43,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 674 transitions, 1407 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:43,169 INFO L242 Difference]: Finished difference. Result has 669 places, 674 transitions, 1371 flow [2022-04-18 16:36:43,170 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1371, PETRI_PLACES=669, PETRI_TRANSITIONS=674} [2022-04-18 16:36:43,170 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -94 predicate places. [2022-04-18 16:36:43,170 INFO L478 AbstractCegarLoop]: Abstraction has has 669 places, 674 transitions, 1371 flow [2022-04-18 16:36:43,171 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:43,171 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:43,171 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] [2022-04-18 16:36:43,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-18 16:36:43,171 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2121290577, now seen corresponding path program 1 times [2022-04-18 16:36:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:43,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530959335] [2022-04-18 16:36:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:43,234 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 16:36:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530959335] [2022-04-18 16:36:43,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530959335] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:43,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:43,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:43,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978568411] [2022-04-18 16:36:43,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:43,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:43,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:43,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:43,237 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 708 out of 816 [2022-04-18 16:36:43,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 674 transitions, 1371 flow. Second operand has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:43,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:43,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 708 of 816 [2022-04-18 16:36:43,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:43,664 INFO L129 PetriNetUnfolder]: 151/3235 cut-off events. [2022-04-18 16:36:43,664 INFO L130 PetriNetUnfolder]: For 42/52 co-relation queries the response was YES. [2022-04-18 16:36:43,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 3235 events. 151/3235 cut-off events. For 42/52 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 21878 event pairs, 55 based on Foata normal form. 0/2666 useless extension candidates. Maximal degree in co-relation 3315. Up to 145 conditions per place. [2022-04-18 16:36:43,694 INFO L132 encePairwiseOnDemand]: 810/816 looper letters, 23 selfloop transitions, 1 changer transitions 0/669 dead transitions. [2022-04-18 16:36:43,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 669 transitions, 1409 flow [2022-04-18 16:36:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2152 transitions. [2022-04-18 16:36:43,698 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8790849673202614 [2022-04-18 16:36:43,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2152 transitions. [2022-04-18 16:36:43,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2152 transitions. [2022-04-18 16:36:43,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:43,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2152 transitions. [2022-04-18 16:36:43,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 717.3333333333334) internal successors, (2152), 3 states have internal predecessors, (2152), 0 states have call successors, (0), 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 16:36:43,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:43,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:43,702 INFO L186 Difference]: Start difference. First operand has 669 places, 674 transitions, 1371 flow. Second operand 3 states and 2152 transitions. [2022-04-18 16:36:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 669 transitions, 1409 flow [2022-04-18 16:36:43,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 669 transitions, 1405 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:43,710 INFO L242 Difference]: Finished difference. Result has 664 places, 669 transitions, 1359 flow [2022-04-18 16:36:43,711 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1359, PETRI_PLACES=664, PETRI_TRANSITIONS=669} [2022-04-18 16:36:43,711 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -99 predicate places. [2022-04-18 16:36:43,711 INFO L478 AbstractCegarLoop]: Abstraction has has 664 places, 669 transitions, 1359 flow [2022-04-18 16:36:43,712 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 0 states have call successors, (0), 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 16:36:43,712 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:43,712 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 16:36:43,712 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-18 16:36:43,712 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash -353983982, now seen corresponding path program 1 times [2022-04-18 16:36:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:43,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262354638] [2022-04-18 16:36:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:43,747 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 16:36:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:43,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262354638] [2022-04-18 16:36:43,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262354638] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:43,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:43,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688881981] [2022-04-18 16:36:43,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:43,749 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:43,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:43,751 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 714 out of 816 [2022-04-18 16:36:43,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 669 transitions, 1359 flow. Second operand has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:43,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:43,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 714 of 816 [2022-04-18 16:36:43,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:44,154 INFO L129 PetriNetUnfolder]: 151/2298 cut-off events. [2022-04-18 16:36:44,154 INFO L130 PetriNetUnfolder]: For 54/64 co-relation queries the response was YES. [2022-04-18 16:36:44,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 2298 events. 151/2298 cut-off events. For 54/64 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 13354 event pairs, 74 based on Foata normal form. 0/1900 useless extension candidates. Maximal degree in co-relation 2422. Up to 184 conditions per place. [2022-04-18 16:36:44,169 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 21 selfloop transitions, 2 changer transitions 0/668 dead transitions. [2022-04-18 16:36:44,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 668 transitions, 1403 flow [2022-04-18 16:36:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2165 transitions. [2022-04-18 16:36:44,172 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8843954248366013 [2022-04-18 16:36:44,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2165 transitions. [2022-04-18 16:36:44,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2165 transitions. [2022-04-18 16:36:44,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:44,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2165 transitions. [2022-04-18 16:36:44,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:44,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:44,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:44,176 INFO L186 Difference]: Start difference. First operand has 664 places, 669 transitions, 1359 flow. Second operand 3 states and 2165 transitions. [2022-04-18 16:36:44,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 668 transitions, 1403 flow [2022-04-18 16:36:44,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 668 transitions, 1402 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:36:44,183 INFO L242 Difference]: Finished difference. Result has 664 places, 668 transitions, 1360 flow [2022-04-18 16:36:44,184 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1360, PETRI_PLACES=664, PETRI_TRANSITIONS=668} [2022-04-18 16:36:44,184 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -99 predicate places. [2022-04-18 16:36:44,185 INFO L478 AbstractCegarLoop]: Abstraction has has 664 places, 668 transitions, 1360 flow [2022-04-18 16:36:44,185 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 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 16:36:44,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:44,185 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:36:44,185 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-18 16:36:44,185 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:44,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1677223750, now seen corresponding path program 1 times [2022-04-18 16:36:44,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:44,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263149328] [2022-04-18 16:36:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:44,220 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 16:36:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:44,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263149328] [2022-04-18 16:36:44,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263149328] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:44,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:44,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479037852] [2022-04-18 16:36:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:44,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:44,223 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:44,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 668 transitions, 1360 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:44,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:44,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:44,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:44,715 INFO L129 PetriNetUnfolder]: 160/2708 cut-off events. [2022-04-18 16:36:44,715 INFO L130 PetriNetUnfolder]: For 52/59 co-relation queries the response was YES. [2022-04-18 16:36:44,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 2708 events. 160/2708 cut-off events. For 52/59 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 16778 event pairs, 29 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 2837. Up to 152 conditions per place. [2022-04-18 16:36:44,739 INFO L132 encePairwiseOnDemand]: 811/816 looper letters, 27 selfloop transitions, 3 changer transitions 0/678 dead transitions. [2022-04-18 16:36:44,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 678 transitions, 1448 flow [2022-04-18 16:36:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:44,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2182 transitions. [2022-04-18 16:36:44,742 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8913398692810458 [2022-04-18 16:36:44,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2182 transitions. [2022-04-18 16:36:44,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2182 transitions. [2022-04-18 16:36:44,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:44,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2182 transitions. [2022-04-18 16:36:44,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 727.3333333333334) internal successors, (2182), 3 states have internal predecessors, (2182), 0 states have call successors, (0), 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 16:36:44,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:44,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:44,746 INFO L186 Difference]: Start difference. First operand has 664 places, 668 transitions, 1360 flow. Second operand 3 states and 2182 transitions. [2022-04-18 16:36:44,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 678 transitions, 1448 flow [2022-04-18 16:36:44,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 678 transitions, 1444 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:44,753 INFO L242 Difference]: Finished difference. Result has 663 places, 669 transitions, 1375 flow [2022-04-18 16:36:44,754 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1375, PETRI_PLACES=663, PETRI_TRANSITIONS=669} [2022-04-18 16:36:44,755 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -100 predicate places. [2022-04-18 16:36:44,755 INFO L478 AbstractCegarLoop]: Abstraction has has 663 places, 669 transitions, 1375 flow [2022-04-18 16:36:44,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:44,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:44,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:36:44,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-18 16:36:44,756 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1199225013, now seen corresponding path program 1 times [2022-04-18 16:36:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:44,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685846016] [2022-04-18 16:36:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:44,794 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 16:36:44,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:44,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685846016] [2022-04-18 16:36:44,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685846016] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:44,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:44,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838671237] [2022-04-18 16:36:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:44,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:44,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:44,797 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:44,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 669 transitions, 1375 flow. Second operand has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:44,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:44,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:44,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:45,300 INFO L129 PetriNetUnfolder]: 205/2960 cut-off events. [2022-04-18 16:36:45,300 INFO L130 PetriNetUnfolder]: For 133/178 co-relation queries the response was YES. [2022-04-18 16:36:45,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 2960 events. 205/2960 cut-off events. For 133/178 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 18670 event pairs, 45 based on Foata normal form. 0/2488 useless extension candidates. Maximal degree in co-relation 3227. Up to 205 conditions per place. [2022-04-18 16:36:45,330 INFO L132 encePairwiseOnDemand]: 811/816 looper letters, 28 selfloop transitions, 4 changer transitions 0/680 dead transitions. [2022-04-18 16:36:45,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 680 transitions, 1476 flow [2022-04-18 16:36:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2182 transitions. [2022-04-18 16:36:45,333 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8913398692810458 [2022-04-18 16:36:45,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2182 transitions. [2022-04-18 16:36:45,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2182 transitions. [2022-04-18 16:36:45,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:45,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2182 transitions. [2022-04-18 16:36:45,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 727.3333333333334) internal successors, (2182), 3 states have internal predecessors, (2182), 0 states have call successors, (0), 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 16:36:45,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:45,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:45,337 INFO L186 Difference]: Start difference. First operand has 663 places, 669 transitions, 1375 flow. Second operand 3 states and 2182 transitions. [2022-04-18 16:36:45,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 680 transitions, 1476 flow [2022-04-18 16:36:45,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 680 transitions, 1476 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:36:45,346 INFO L242 Difference]: Finished difference. Result has 664 places, 671 transitions, 1408 flow [2022-04-18 16:36:45,347 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1408, PETRI_PLACES=664, PETRI_TRANSITIONS=671} [2022-04-18 16:36:45,347 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -99 predicate places. [2022-04-18 16:36:45,347 INFO L478 AbstractCegarLoop]: Abstraction has has 664 places, 671 transitions, 1408 flow [2022-04-18 16:36:45,348 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 718.3333333333334) internal successors, (2155), 3 states have internal predecessors, (2155), 0 states have call successors, (0), 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 16:36:45,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:45,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:36:45,348 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-18 16:36:45,348 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1924458750, now seen corresponding path program 1 times [2022-04-18 16:36:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403948557] [2022-04-18 16:36:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:45,389 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 16:36:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:45,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403948557] [2022-04-18 16:36:45,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403948557] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:45,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:45,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10089823] [2022-04-18 16:36:45,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:45,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:45,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:45,393 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 816 [2022-04-18 16:36:45,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 671 transitions, 1408 flow. Second operand has 3 states, 3 states have (on average 724.0) internal successors, (2172), 3 states have internal predecessors, (2172), 0 states have call successors, (0), 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 16:36:45,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:45,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 816 [2022-04-18 16:36:45,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:45,826 INFO L129 PetriNetUnfolder]: 185/2225 cut-off events. [2022-04-18 16:36:45,826 INFO L130 PetriNetUnfolder]: For 389/668 co-relation queries the response was YES. [2022-04-18 16:36:45,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 2225 events. 185/2225 cut-off events. For 389/668 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11792 event pairs, 24 based on Foata normal form. 3/1877 useless extension candidates. Maximal degree in co-relation 2628. Up to 194 conditions per place. [2022-04-18 16:36:45,847 INFO L132 encePairwiseOnDemand]: 811/816 looper letters, 23 selfloop transitions, 4 changer transitions 0/680 dead transitions. [2022-04-18 16:36:45,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 680 transitions, 1512 flow [2022-04-18 16:36:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:45,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:45,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2189 transitions. [2022-04-18 16:36:45,850 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8941993464052288 [2022-04-18 16:36:45,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2189 transitions. [2022-04-18 16:36:45,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2189 transitions. [2022-04-18 16:36:45,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:45,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2189 transitions. [2022-04-18 16:36:45,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 729.6666666666666) internal successors, (2189), 3 states have internal predecessors, (2189), 0 states have call successors, (0), 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 16:36:45,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:45,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:45,854 INFO L186 Difference]: Start difference. First operand has 664 places, 671 transitions, 1408 flow. Second operand 3 states and 2189 transitions. [2022-04-18 16:36:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 680 transitions, 1512 flow [2022-04-18 16:36:45,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 665 places, 680 transitions, 1512 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:36:45,860 INFO L242 Difference]: Finished difference. Result has 666 places, 673 transitions, 1430 flow [2022-04-18 16:36:45,861 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1430, PETRI_PLACES=666, PETRI_TRANSITIONS=673} [2022-04-18 16:36:45,861 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -97 predicate places. [2022-04-18 16:36:45,861 INFO L478 AbstractCegarLoop]: Abstraction has has 666 places, 673 transitions, 1430 flow [2022-04-18 16:36:45,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 724.0) internal successors, (2172), 3 states have internal predecessors, (2172), 0 states have call successors, (0), 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 16:36:45,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:45,862 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, 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 16:36:45,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-18 16:36:45,862 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -903767974, now seen corresponding path program 1 times [2022-04-18 16:36:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:45,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546322990] [2022-04-18 16:36:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:45,898 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 16:36:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546322990] [2022-04-18 16:36:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546322990] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:45,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:45,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549767520] [2022-04-18 16:36:45,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:45,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:45,901 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 720 out of 816 [2022-04-18 16:36:45,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 673 transitions, 1430 flow. Second operand has 3 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:45,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:45,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 720 of 816 [2022-04-18 16:36:45,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:47,116 INFO L129 PetriNetUnfolder]: 554/7597 cut-off events. [2022-04-18 16:36:47,116 INFO L130 PetriNetUnfolder]: For 913/990 co-relation queries the response was YES. [2022-04-18 16:36:47,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8932 conditions, 7597 events. 554/7597 cut-off events. For 913/990 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 68243 event pairs, 119 based on Foata normal form. 0/6261 useless extension candidates. Maximal degree in co-relation 8820. Up to 348 conditions per place. [2022-04-18 16:36:47,186 INFO L132 encePairwiseOnDemand]: 813/816 looper letters, 32 selfloop transitions, 2 changer transitions 0/684 dead transitions. [2022-04-18 16:36:47,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 684 transitions, 1558 flow [2022-04-18 16:36:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2184 transitions. [2022-04-18 16:36:47,188 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8921568627450981 [2022-04-18 16:36:47,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2184 transitions. [2022-04-18 16:36:47,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2184 transitions. [2022-04-18 16:36:47,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:47,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2184 transitions. [2022-04-18 16:36:47,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 728.0) internal successors, (2184), 3 states have internal predecessors, (2184), 0 states have call successors, (0), 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 16:36:47,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:47,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:47,192 INFO L186 Difference]: Start difference. First operand has 666 places, 673 transitions, 1430 flow. Second operand 3 states and 2184 transitions. [2022-04-18 16:36:47,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 684 transitions, 1558 flow [2022-04-18 16:36:47,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 684 transitions, 1551 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:36:47,200 INFO L242 Difference]: Finished difference. Result has 666 places, 672 transitions, 1428 flow [2022-04-18 16:36:47,201 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=670, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1428, PETRI_PLACES=666, PETRI_TRANSITIONS=672} [2022-04-18 16:36:47,201 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -97 predicate places. [2022-04-18 16:36:47,201 INFO L478 AbstractCegarLoop]: Abstraction has has 666 places, 672 transitions, 1428 flow [2022-04-18 16:36:47,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 721.6666666666666) internal successors, (2165), 3 states have internal predecessors, (2165), 0 states have call successors, (0), 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 16:36:47,201 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:47,202 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, 1, 1, 1, 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 16:36:47,202 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-18 16:36:47,202 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 966900062, now seen corresponding path program 1 times [2022-04-18 16:36:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:47,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519075011] [2022-04-18 16:36:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:47,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:47,248 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 16:36:47,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:47,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519075011] [2022-04-18 16:36:47,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519075011] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:47,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:47,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616070531] [2022-04-18 16:36:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:47,249 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:47,251 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 816 [2022-04-18 16:36:47,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 672 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 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 16:36:47,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:47,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 816 [2022-04-18 16:36:47,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:48,509 INFO L129 PetriNetUnfolder]: 590/7242 cut-off events. [2022-04-18 16:36:48,509 INFO L130 PetriNetUnfolder]: For 1068/1436 co-relation queries the response was YES. [2022-04-18 16:36:48,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 7242 events. 590/7242 cut-off events. For 1068/1436 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 58736 event pairs, 64 based on Foata normal form. 0/6002 useless extension candidates. Maximal degree in co-relation 8692. Up to 568 conditions per place. [2022-04-18 16:36:48,602 INFO L132 encePairwiseOnDemand]: 812/816 looper letters, 37 selfloop transitions, 2 changer transitions 0/686 dead transitions. [2022-04-18 16:36:48,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 686 transitions, 1575 flow [2022-04-18 16:36:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2181 transitions. [2022-04-18 16:36:48,605 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8909313725490197 [2022-04-18 16:36:48,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2181 transitions. [2022-04-18 16:36:48,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2181 transitions. [2022-04-18 16:36:48,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:48,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2181 transitions. [2022-04-18 16:36:48,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 727.0) internal successors, (2181), 3 states have internal predecessors, (2181), 0 states have call successors, (0), 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 16:36:48,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:48,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:48,609 INFO L186 Difference]: Start difference. First operand has 666 places, 672 transitions, 1428 flow. Second operand 3 states and 2181 transitions. [2022-04-18 16:36:48,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 686 transitions, 1575 flow [2022-04-18 16:36:48,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 686 transitions, 1571 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:36:48,617 INFO L242 Difference]: Finished difference. Result has 665 places, 672 transitions, 1434 flow [2022-04-18 16:36:48,618 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1434, PETRI_PLACES=665, PETRI_TRANSITIONS=672} [2022-04-18 16:36:48,618 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -98 predicate places. [2022-04-18 16:36:48,618 INFO L478 AbstractCegarLoop]: Abstraction has has 665 places, 672 transitions, 1434 flow [2022-04-18 16:36:48,619 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 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 16:36:48,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:48,619 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, 1, 1, 1, 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 16:36:48,619 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-18 16:36:48,619 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1000996967, now seen corresponding path program 1 times [2022-04-18 16:36:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:48,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864657279] [2022-04-18 16:36:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:48,665 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 16:36:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864657279] [2022-04-18 16:36:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864657279] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:48,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:48,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:36:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896615433] [2022-04-18 16:36:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:48,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:36:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:36:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:36:48,669 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 708 out of 816 [2022-04-18 16:36:48,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 672 transitions, 1434 flow. Second operand has 3 states, 3 states have (on average 710.3333333333334) internal successors, (2131), 3 states have internal predecessors, (2131), 0 states have call successors, (0), 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 16:36:48,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:48,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 708 of 816 [2022-04-18 16:36:48,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:36:50,785 INFO L129 PetriNetUnfolder]: 1460/13058 cut-off events. [2022-04-18 16:36:50,785 INFO L130 PetriNetUnfolder]: For 2319/2462 co-relation queries the response was YES. [2022-04-18 16:36:50,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16784 conditions, 13058 events. 1460/13058 cut-off events. For 2319/2462 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 135269 event pairs, 258 based on Foata normal form. 11/11006 useless extension candidates. Maximal degree in co-relation 16669. Up to 1084 conditions per place. [2022-04-18 16:36:50,860 INFO L132 encePairwiseOnDemand]: 809/816 looper letters, 37 selfloop transitions, 2 changer transitions 6/680 dead transitions. [2022-04-18 16:36:50,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 680 transitions, 1567 flow [2022-04-18 16:36:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:36:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:36:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2158 transitions. [2022-04-18 16:36:50,863 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8815359477124183 [2022-04-18 16:36:50,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2158 transitions. [2022-04-18 16:36:50,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2158 transitions. [2022-04-18 16:36:50,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:36:50,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2158 transitions. [2022-04-18 16:36:50,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 719.3333333333334) internal successors, (2158), 3 states have internal predecessors, (2158), 0 states have call successors, (0), 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 16:36:50,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:50,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 816.0) internal successors, (3264), 4 states have internal predecessors, (3264), 0 states have call successors, (0), 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 16:36:50,867 INFO L186 Difference]: Start difference. First operand has 665 places, 672 transitions, 1434 flow. Second operand 3 states and 2158 transitions. [2022-04-18 16:36:50,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 680 transitions, 1567 flow [2022-04-18 16:36:50,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 680 transitions, 1567 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:36:50,874 INFO L242 Difference]: Finished difference. Result has 663 places, 662 transitions, 1413 flow [2022-04-18 16:36:50,875 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=816, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1413, PETRI_PLACES=663, PETRI_TRANSITIONS=662} [2022-04-18 16:36:50,877 INFO L335 CegarLoopForPetriNet]: 763 programPoint places, -100 predicate places. [2022-04-18 16:36:50,877 INFO L478 AbstractCegarLoop]: Abstraction has has 663 places, 662 transitions, 1413 flow [2022-04-18 16:36:50,877 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 710.3333333333334) internal successors, (2131), 3 states have internal predecessors, (2131), 0 states have call successors, (0), 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 16:36:50,877 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:36:50,877 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, 1, 1, 1, 1, 1, 1, 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 16:36:50,878 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-18 16:36:50,878 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 221 more)] === [2022-04-18 16:36:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:36:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -488913454, now seen corresponding path program 1 times [2022-04-18 16:36:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:36:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505543236] [2022-04-18 16:36:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:36:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:36:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:36:50,974 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 16:36:50,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:36:50,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505543236] [2022-04-18 16:36:50,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505543236] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:36:50,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:36:50,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:36:50,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344897720] [2022-04-18 16:36:50,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:36:50,975 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:36:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:36:50,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:36:50,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:36:50,978 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 816 [2022-04-18 16:36:50,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 662 transitions, 1413 flow. Second operand has 6 states, 6 states have (on average 626.0) internal successors, (3756), 6 states have internal predecessors, (3756), 0 states have call successors, (0), 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 16:36:50,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:36:50,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 816 [2022-04-18 16:36:50,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand