./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:32:55,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:32:55,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:32:55,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:32:55,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:32:55,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:32:55,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:32:55,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:32:55,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:32:55,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:32:55,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:32:55,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:32:55,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:32:55,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:32:55,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:32:55,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:32:55,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:32:55,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:32:55,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:32:55,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:32:55,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:32:55,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:32:55,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:32:55,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:32:55,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:32:55,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:32:55,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:32:55,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:32:55,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:32:55,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:32:55,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:32:55,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:32:55,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:32:55,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:32:55,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:32:55,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:32:55,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:32:55,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:32:55,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:32:55,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:32:55,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:32:55,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:32:55,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:32:55,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:32:55,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:32:55,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:32:55,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:32:55,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:32:55,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:32:55,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:32:55,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:32:55,568 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:32:55,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:32:55,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:32:55,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:32:55,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:32:55,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:32:55,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:32:55,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:32:55,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:32:55,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:32:55,571 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:32:55,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:32:55,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:32:55,572 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:32:55,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:32:55,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:32:55,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:32:55,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:32:55,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:32:55,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:32:55,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:32:55,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:32:55,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:32:55,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:32:55,574 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:32:55,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:32:55,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:32:55,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-04-18 16:32:55,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:32:55,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:32:55,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:32:55,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:32:55,825 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:32:55,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-04-18 16:32:55,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2912ab3f8/1acc7b060ff64c698ca5f652d23e52fb/FLAGbfc1f4186 [2022-04-18 16:32:56,320 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:32:56,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2022-04-18 16:32:56,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2912ab3f8/1acc7b060ff64c698ca5f652d23e52fb/FLAGbfc1f4186 [2022-04-18 16:32:56,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2912ab3f8/1acc7b060ff64c698ca5f652d23e52fb [2022-04-18 16:32:56,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:32:56,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:32:56,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:32:56,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:32:56,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:32:56,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed5e923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56, skipping insertion in model container [2022-04-18 16:32:56,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:32:56,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:32:56,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2022-04-18 16:32:56,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:32:56,643 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:32:56,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2022-04-18 16:32:56,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:32:56,744 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:32:56,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56 WrapperNode [2022-04-18 16:32:56,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:32:56,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:32:56,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:32:56,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:32:56,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,841 INFO L137 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 811 [2022-04-18 16:32:56,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:32:56,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:32:56,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:32:56,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:32:56,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:32:56,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:32:56,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:32:56,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:32:56,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (1/1) ... [2022-04-18 16:32:56,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:32:56,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:32:56,973 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 16:32:56,988 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 16:32:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:32:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:32:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:32:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:32:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:32:57,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:32:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:32:57,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:32:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 16:32:57,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 16:32:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:32:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:32:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:32:57,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:32:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:32:57,034 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 16:32:57,199 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:32:57,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:32:58,143 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:32:58,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:32:58,161 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 16:32:58,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:32:58 BoogieIcfgContainer [2022-04-18 16:32:58,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:32:58,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:32:58,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:32:58,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:32:58,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:32:56" (1/3) ... [2022-04-18 16:32:58,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46581429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:32:58, skipping insertion in model container [2022-04-18 16:32:58,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:56" (2/3) ... [2022-04-18 16:32:58,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46581429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:32:58, skipping insertion in model container [2022-04-18 16:32:58,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:32:58" (3/3) ... [2022-04-18 16:32:58,173 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-04-18 16:32:58,178 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:32:58,178 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:32:58,179 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 119 error locations. [2022-04-18 16:32:58,179 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:32:58,345 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 16:32:58,400 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:32:58,406 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 16:32:58,408 INFO L341 AbstractCegarLoop]: Starting to check reachability of 197 error locations. [2022-04-18 16:32:58,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1029 places, 1070 transitions, 2164 flow [2022-04-18 16:32:58,846 INFO L129 PetriNetUnfolder]: 51/1067 cut-off events. [2022-04-18 16:32:58,846 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 16:32:58,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 1067 events. 51/1067 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2306 event pairs, 0 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 840. Up to 2 conditions per place. [2022-04-18 16:32:58,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 1029 places, 1070 transitions, 2164 flow [2022-04-18 16:32:58,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1003 places, 1041 transitions, 2100 flow [2022-04-18 16:32:58,894 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2022-04-18 16:32:58,895 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:32:58,895 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:58,896 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 16:32:58,896 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:32:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -761737192, now seen corresponding path program 1 times [2022-04-18 16:32:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:58,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346843874] [2022-04-18 16:32:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:58,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:59,143 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 16:32:59,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:59,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346843874] [2022-04-18 16:32:59,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346843874] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:59,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:59,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:59,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518138259] [2022-04-18 16:32:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:59,156 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:59,197 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 998 out of 1070 [2022-04-18 16:32:59,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1003 places, 1041 transitions, 2100 flow. Second operand has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:59,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 998 of 1070 [2022-04-18 16:32:59,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:01,555 INFO L129 PetriNetUnfolder]: 408/5346 cut-off events. [2022-04-18 16:33:01,556 INFO L130 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-04-18 16:33:01,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6113 conditions, 5346 events. 408/5346 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 45136 event pairs, 279 based on Foata normal form. 172/4522 useless extension candidates. Maximal degree in co-relation 5361. Up to 522 conditions per place. [2022-04-18 16:33:01,750 INFO L132 encePairwiseOnDemand]: 1039/1070 looper letters, 39 selfloop transitions, 2 changer transitions 16/1012 dead transitions. [2022-04-18 16:33:01,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1004 places, 1012 transitions, 2124 flow [2022-04-18 16:33:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3064 transitions. [2022-04-18 16:33:01,770 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9545171339563863 [2022-04-18 16:33:01,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3064 transitions. [2022-04-18 16:33:01,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3064 transitions. [2022-04-18 16:33:01,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:01,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3064 transitions. [2022-04-18 16:33:01,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1021.3333333333334) internal successors, (3064), 3 states have internal predecessors, (3064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:01,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:01,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:01,805 INFO L186 Difference]: Start difference. First operand has 1003 places, 1041 transitions, 2100 flow. Second operand 3 states and 3064 transitions. [2022-04-18 16:33:01,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1004 places, 1012 transitions, 2124 flow [2022-04-18 16:33:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 998 places, 1012 transitions, 2112 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-04-18 16:33:01,835 INFO L242 Difference]: Finished difference. Result has 998 places, 996 transitions, 2002 flow [2022-04-18 16:33:01,839 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=996, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2002, PETRI_PLACES=998, PETRI_TRANSITIONS=996} [2022-04-18 16:33:01,842 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -5 predicate places. [2022-04-18 16:33:01,842 INFO L478 AbstractCegarLoop]: Abstraction has has 998 places, 996 transitions, 2002 flow [2022-04-18 16:33:01,844 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:01,845 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:01,845 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] [2022-04-18 16:33:01,845 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:33:01,846 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1042263533, now seen corresponding path program 1 times [2022-04-18 16:33:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:01,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036785489] [2022-04-18 16:33:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:01,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:01,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036785489] [2022-04-18 16:33:01,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036785489] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:01,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:01,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391906244] [2022-04-18 16:33:01,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:01,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:01,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:01,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:01,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:01,900 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1001 out of 1070 [2022-04-18 16:33:01,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 998 places, 996 transitions, 2002 flow. Second operand has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:01,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:01,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1001 of 1070 [2022-04-18 16:33:01,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:03,236 INFO L129 PetriNetUnfolder]: 235/4103 cut-off events. [2022-04-18 16:33:03,237 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-04-18 16:33:03,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 4103 events. 235/4103 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 31313 event pairs, 132 based on Foata normal form. 0/3432 useless extension candidates. Maximal degree in co-relation 4377. Up to 257 conditions per place. [2022-04-18 16:33:03,333 INFO L132 encePairwiseOnDemand]: 1059/1070 looper letters, 27 selfloop transitions, 1 changer transitions 0/986 dead transitions. [2022-04-18 16:33:03,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 986 transitions, 2038 flow [2022-04-18 16:33:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3041 transitions. [2022-04-18 16:33:03,341 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9473520249221183 [2022-04-18 16:33:03,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3041 transitions. [2022-04-18 16:33:03,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3041 transitions. [2022-04-18 16:33:03,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:03,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3041 transitions. [2022-04-18 16:33:03,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1013.6666666666666) internal successors, (3041), 3 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:03,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:03,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:03,359 INFO L186 Difference]: Start difference. First operand has 998 places, 996 transitions, 2002 flow. Second operand 3 states and 3041 transitions. [2022-04-18 16:33:03,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 986 transitions, 2038 flow [2022-04-18 16:33:03,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 972 places, 986 transitions, 2034 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:03,376 INFO L242 Difference]: Finished difference. Result has 972 places, 986 transitions, 1980 flow [2022-04-18 16:33:03,378 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=985, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1980, PETRI_PLACES=972, PETRI_TRANSITIONS=986} [2022-04-18 16:33:03,378 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -31 predicate places. [2022-04-18 16:33:03,379 INFO L478 AbstractCegarLoop]: Abstraction has has 972 places, 986 transitions, 1980 flow [2022-04-18 16:33:03,381 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:03,381 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:03,382 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 16:33:03,382 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:33:03,382 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1551388717, now seen corresponding path program 1 times [2022-04-18 16:33:03,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:03,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312042525] [2022-04-18 16:33:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:03,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:03,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312042525] [2022-04-18 16:33:03,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312042525] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:03,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:03,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977066411] [2022-04-18 16:33:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:03,476 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:03,481 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 998 out of 1070 [2022-04-18 16:33:03,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 986 transitions, 1980 flow. Second operand has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:03,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:03,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 998 of 1070 [2022-04-18 16:33:03,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:04,706 INFO L129 PetriNetUnfolder]: 206/3445 cut-off events. [2022-04-18 16:33:04,706 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-04-18 16:33:04,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 3445 events. 206/3445 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 23374 event pairs, 117 based on Foata normal form. 0/2835 useless extension candidates. Maximal degree in co-relation 3704. Up to 279 conditions per place. [2022-04-18 16:33:04,875 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 39 selfloop transitions, 2 changer transitions 0/985 dead transitions. [2022-04-18 16:33:04,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 985 transitions, 2060 flow [2022-04-18 16:33:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3036 transitions. [2022-04-18 16:33:04,883 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9457943925233645 [2022-04-18 16:33:04,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3036 transitions. [2022-04-18 16:33:04,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3036 transitions. [2022-04-18 16:33:04,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:04,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3036 transitions. [2022-04-18 16:33:04,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1012.0) internal successors, (3036), 3 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:04,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:04,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:04,902 INFO L186 Difference]: Start difference. First operand has 972 places, 986 transitions, 1980 flow. Second operand 3 states and 3036 transitions. [2022-04-18 16:33:04,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 985 transitions, 2060 flow [2022-04-18 16:33:04,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 972 places, 985 transitions, 2059 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:04,920 INFO L242 Difference]: Finished difference. Result has 972 places, 985 transitions, 1981 flow [2022-04-18 16:33:04,922 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=983, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1981, PETRI_PLACES=972, PETRI_TRANSITIONS=985} [2022-04-18 16:33:04,923 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -31 predicate places. [2022-04-18 16:33:04,923 INFO L478 AbstractCegarLoop]: Abstraction has has 972 places, 985 transitions, 1981 flow [2022-04-18 16:33:04,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:04,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:04,926 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] [2022-04-18 16:33:04,926 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:33:04,926 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -832084791, now seen corresponding path program 1 times [2022-04-18 16:33:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:04,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617795851] [2022-04-18 16:33:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:04,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617795851] [2022-04-18 16:33:04,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617795851] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:04,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:04,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476446891] [2022-04-18 16:33:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:04,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:04,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:04,974 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1001 out of 1070 [2022-04-18 16:33:04,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 985 transitions, 1981 flow. Second operand has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:04,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:04,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1001 of 1070 [2022-04-18 16:33:04,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:05,729 INFO L129 PetriNetUnfolder]: 135/2859 cut-off events. [2022-04-18 16:33:05,729 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 16:33:05,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 2859 events. 135/2859 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 17400 event pairs, 60 based on Foata normal form. 0/2413 useless extension candidates. Maximal degree in co-relation 2986. Up to 149 conditions per place. [2022-04-18 16:33:05,827 INFO L132 encePairwiseOnDemand]: 1059/1070 looper letters, 27 selfloop transitions, 1 changer transitions 0/975 dead transitions. [2022-04-18 16:33:05,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 975 transitions, 2017 flow [2022-04-18 16:33:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3041 transitions. [2022-04-18 16:33:05,833 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9473520249221183 [2022-04-18 16:33:05,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3041 transitions. [2022-04-18 16:33:05,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3041 transitions. [2022-04-18 16:33:05,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:05,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3041 transitions. [2022-04-18 16:33:05,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1013.6666666666666) internal successors, (3041), 3 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:05,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:05,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:05,851 INFO L186 Difference]: Start difference. First operand has 972 places, 985 transitions, 1981 flow. Second operand 3 states and 3041 transitions. [2022-04-18 16:33:05,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 975 transitions, 2017 flow [2022-04-18 16:33:05,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 975 transitions, 2013 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:05,867 INFO L242 Difference]: Finished difference. Result has 962 places, 975 transitions, 1959 flow [2022-04-18 16:33:05,869 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=974, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1959, PETRI_PLACES=962, PETRI_TRANSITIONS=975} [2022-04-18 16:33:05,869 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -41 predicate places. [2022-04-18 16:33:05,870 INFO L478 AbstractCegarLoop]: Abstraction has has 962 places, 975 transitions, 1959 flow [2022-04-18 16:33:05,871 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:05,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:05,872 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:05,872 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:33:05,872 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:05,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash -774698993, now seen corresponding path program 1 times [2022-04-18 16:33:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:05,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724826643] [2022-04-18 16:33:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:05,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:05,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724826643] [2022-04-18 16:33:05,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724826643] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:05,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:05,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733903237] [2022-04-18 16:33:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:05,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:05,916 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 998 out of 1070 [2022-04-18 16:33:05,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 975 transitions, 1959 flow. Second operand has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:05,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:05,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 998 of 1070 [2022-04-18 16:33:05,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:07,203 INFO L129 PetriNetUnfolder]: 430/4925 cut-off events. [2022-04-18 16:33:07,204 INFO L130 PetriNetUnfolder]: For 122/166 co-relation queries the response was YES. [2022-04-18 16:33:07,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5492 conditions, 4925 events. 430/4925 cut-off events. For 122/166 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 41970 event pairs, 279 based on Foata normal form. 0/4065 useless extension candidates. Maximal degree in co-relation 5446. Up to 549 conditions per place. [2022-04-18 16:33:07,334 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 39 selfloop transitions, 2 changer transitions 0/974 dead transitions. [2022-04-18 16:33:07,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 974 transitions, 2039 flow [2022-04-18 16:33:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:07,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3036 transitions. [2022-04-18 16:33:07,340 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9457943925233645 [2022-04-18 16:33:07,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3036 transitions. [2022-04-18 16:33:07,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3036 transitions. [2022-04-18 16:33:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:07,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3036 transitions. [2022-04-18 16:33:07,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1012.0) internal successors, (3036), 3 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:07,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:07,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:07,354 INFO L186 Difference]: Start difference. First operand has 962 places, 975 transitions, 1959 flow. Second operand 3 states and 3036 transitions. [2022-04-18 16:33:07,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 974 transitions, 2039 flow [2022-04-18 16:33:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 974 transitions, 2038 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:07,374 INFO L242 Difference]: Finished difference. Result has 962 places, 974 transitions, 1960 flow [2022-04-18 16:33:07,376 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=972, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1960, PETRI_PLACES=962, PETRI_TRANSITIONS=974} [2022-04-18 16:33:07,377 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -41 predicate places. [2022-04-18 16:33:07,377 INFO L478 AbstractCegarLoop]: Abstraction has has 962 places, 974 transitions, 1960 flow [2022-04-18 16:33:07,378 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 999.3333333333334) internal successors, (2998), 3 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:07,378 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:07,378 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] [2022-04-18 16:33:07,379 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:33:07,379 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 633677127, now seen corresponding path program 1 times [2022-04-18 16:33:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:07,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265308945] [2022-04-18 16:33:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265308945] [2022-04-18 16:33:07,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265308945] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:07,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:07,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562687316] [2022-04-18 16:33:07,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:07,448 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:07,454 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1001 out of 1070 [2022-04-18 16:33:07,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 974 transitions, 1960 flow. Second operand has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:07,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:07,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1001 of 1070 [2022-04-18 16:33:07,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:08,283 INFO L129 PetriNetUnfolder]: 251/3848 cut-off events. [2022-04-18 16:33:08,283 INFO L130 PetriNetUnfolder]: For 65/94 co-relation queries the response was YES. [2022-04-18 16:33:08,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 3848 events. 251/3848 cut-off events. For 65/94 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 28359 event pairs, 132 based on Foata normal form. 0/3267 useless extension candidates. Maximal degree in co-relation 4095. Up to 274 conditions per place. [2022-04-18 16:33:08,379 INFO L132 encePairwiseOnDemand]: 1059/1070 looper letters, 27 selfloop transitions, 1 changer transitions 0/964 dead transitions. [2022-04-18 16:33:08,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 954 places, 964 transitions, 1996 flow [2022-04-18 16:33:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3041 transitions. [2022-04-18 16:33:08,386 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9473520249221183 [2022-04-18 16:33:08,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3041 transitions. [2022-04-18 16:33:08,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3041 transitions. [2022-04-18 16:33:08,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:08,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3041 transitions. [2022-04-18 16:33:08,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1013.6666666666666) internal successors, (3041), 3 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,399 INFO L186 Difference]: Start difference. First operand has 962 places, 974 transitions, 1960 flow. Second operand 3 states and 3041 transitions. [2022-04-18 16:33:08,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 954 places, 964 transitions, 1996 flow [2022-04-18 16:33:08,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 964 transitions, 1992 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:08,415 INFO L242 Difference]: Finished difference. Result has 952 places, 964 transitions, 1938 flow [2022-04-18 16:33:08,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=950, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1938, PETRI_PLACES=952, PETRI_TRANSITIONS=964} [2022-04-18 16:33:08,417 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -51 predicate places. [2022-04-18 16:33:08,418 INFO L478 AbstractCegarLoop]: Abstraction has has 952 places, 964 transitions, 1938 flow [2022-04-18 16:33:08,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:08,419 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] [2022-04-18 16:33:08,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:33:08,419 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1300259338, now seen corresponding path program 1 times [2022-04-18 16:33:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:08,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430969553] [2022-04-18 16:33:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430969553] [2022-04-18 16:33:08,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430969553] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:08,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369475281] [2022-04-18 16:33:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:08,455 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:08,460 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1022 out of 1070 [2022-04-18 16:33:08,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 964 transitions, 1938 flow. Second operand has 3 states, 3 states have (on average 1023.3333333333334) internal successors, (3070), 3 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:08,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1022 of 1070 [2022-04-18 16:33:08,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:08,733 INFO L129 PetriNetUnfolder]: 34/1311 cut-off events. [2022-04-18 16:33:08,733 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-04-18 16:33:08,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 1311 events. 34/1311 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3863 event pairs, 6 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 1309. Up to 28 conditions per place. [2022-04-18 16:33:08,759 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 15 selfloop transitions, 2 changer transitions 0/963 dead transitions. [2022-04-18 16:33:08,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 963 transitions, 1970 flow [2022-04-18 16:33:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3084 transitions. [2022-04-18 16:33:08,766 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9607476635514018 [2022-04-18 16:33:08,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3084 transitions. [2022-04-18 16:33:08,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3084 transitions. [2022-04-18 16:33:08,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:08,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3084 transitions. [2022-04-18 16:33:08,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1028.0) internal successors, (3084), 3 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,781 INFO L186 Difference]: Start difference. First operand has 952 places, 964 transitions, 1938 flow. Second operand 3 states and 3084 transitions. [2022-04-18 16:33:08,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 963 transitions, 1970 flow [2022-04-18 16:33:08,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 952 places, 963 transitions, 1969 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:08,802 INFO L242 Difference]: Finished difference. Result has 952 places, 963 transitions, 1939 flow [2022-04-18 16:33:08,804 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=950, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1939, PETRI_PLACES=952, PETRI_TRANSITIONS=963} [2022-04-18 16:33:08,805 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -51 predicate places. [2022-04-18 16:33:08,805 INFO L478 AbstractCegarLoop]: Abstraction has has 952 places, 963 transitions, 1939 flow [2022-04-18 16:33:08,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1023.3333333333334) internal successors, (3070), 3 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:08,807 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] [2022-04-18 16:33:08,807 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:33:08,808 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1671524599, now seen corresponding path program 1 times [2022-04-18 16:33:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:08,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187035407] [2022-04-18 16:33:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:08,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187035407] [2022-04-18 16:33:08,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187035407] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:08,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:08,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:08,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245761200] [2022-04-18 16:33:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:08,871 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:08,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:08,876 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:08,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 963 transitions, 1939 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:08,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:08,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:08,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:09,280 INFO L129 PetriNetUnfolder]: 54/1562 cut-off events. [2022-04-18 16:33:09,281 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 16:33:09,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 1562 events. 54/1562 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6946 event pairs, 18 based on Foata normal form. 0/1353 useless extension candidates. Maximal degree in co-relation 1601. Up to 55 conditions per place. [2022-04-18 16:33:09,310 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/962 dead transitions. [2022-04-18 16:33:09,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 962 transitions, 1977 flow [2022-04-18 16:33:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:09,317 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:09,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:09,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,333 INFO L186 Difference]: Start difference. First operand has 952 places, 963 transitions, 1939 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:09,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 962 transitions, 1977 flow [2022-04-18 16:33:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 962 transitions, 1973 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:09,350 INFO L242 Difference]: Finished difference. Result has 951 places, 962 transitions, 1937 flow [2022-04-18 16:33:09,352 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=960, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1937, PETRI_PLACES=951, PETRI_TRANSITIONS=962} [2022-04-18 16:33:09,353 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -52 predicate places. [2022-04-18 16:33:09,353 INFO L478 AbstractCegarLoop]: Abstraction has has 951 places, 962 transitions, 1937 flow [2022-04-18 16:33:09,354 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,354 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:09,354 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] [2022-04-18 16:33:09,354 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:33:09,355 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1392357092, now seen corresponding path program 1 times [2022-04-18 16:33:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:09,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430155160] [2022-04-18 16:33:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:09,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:09,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430155160] [2022-04-18 16:33:09,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430155160] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:09,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:09,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:09,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118317671] [2022-04-18 16:33:09,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:09,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:09,400 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:09,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 962 transitions, 1937 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:09,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:09,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:09,796 INFO L129 PetriNetUnfolder]: 54/1523 cut-off events. [2022-04-18 16:33:09,796 INFO L130 PetriNetUnfolder]: For 3/21 co-relation queries the response was YES. [2022-04-18 16:33:09,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 1523 events. 54/1523 cut-off events. For 3/21 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6403 event pairs, 18 based on Foata normal form. 0/1320 useless extension candidates. Maximal degree in co-relation 1562. Up to 55 conditions per place. [2022-04-18 16:33:09,828 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/961 dead transitions. [2022-04-18 16:33:09,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 952 places, 961 transitions, 1975 flow [2022-04-18 16:33:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:09,835 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:09,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:09,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:09,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,850 INFO L186 Difference]: Start difference. First operand has 951 places, 962 transitions, 1937 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:09,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 952 places, 961 transitions, 1975 flow [2022-04-18 16:33:09,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 950 places, 961 transitions, 1971 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:09,869 INFO L242 Difference]: Finished difference. Result has 950 places, 961 transitions, 1935 flow [2022-04-18 16:33:09,870 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=948, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=959, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1935, PETRI_PLACES=950, PETRI_TRANSITIONS=961} [2022-04-18 16:33:09,871 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -53 predicate places. [2022-04-18 16:33:09,871 INFO L478 AbstractCegarLoop]: Abstraction has has 950 places, 961 transitions, 1935 flow [2022-04-18 16:33:09,872 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,872 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:09,873 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] [2022-04-18 16:33:09,873 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 16:33:09,873 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash -679795873, now seen corresponding path program 1 times [2022-04-18 16:33:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:09,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988040657] [2022-04-18 16:33:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:09,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988040657] [2022-04-18 16:33:09,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988040657] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:09,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:09,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316247842] [2022-04-18 16:33:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:09,904 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:09,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:09,908 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:09,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 961 transitions, 1935 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:09,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:09,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:09,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:10,186 INFO L129 PetriNetUnfolder]: 30/1162 cut-off events. [2022-04-18 16:33:10,187 INFO L130 PetriNetUnfolder]: For 6/12 co-relation queries the response was YES. [2022-04-18 16:33:10,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 1162 events. 30/1162 cut-off events. For 6/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3236 event pairs, 6 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 1162. Up to 31 conditions per place. [2022-04-18 16:33:10,215 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/960 dead transitions. [2022-04-18 16:33:10,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 960 transitions, 1973 flow [2022-04-18 16:33:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:10,221 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:10,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:10,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,235 INFO L186 Difference]: Start difference. First operand has 950 places, 961 transitions, 1935 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:10,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 951 places, 960 transitions, 1973 flow [2022-04-18 16:33:10,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 960 transitions, 1969 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:10,253 INFO L242 Difference]: Finished difference. Result has 949 places, 960 transitions, 1933 flow [2022-04-18 16:33:10,255 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1933, PETRI_PLACES=949, PETRI_TRANSITIONS=960} [2022-04-18 16:33:10,255 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -54 predicate places. [2022-04-18 16:33:10,256 INFO L478 AbstractCegarLoop]: Abstraction has has 949 places, 960 transitions, 1933 flow [2022-04-18 16:33:10,257 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:10,257 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] [2022-04-18 16:33:10,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 16:33:10,258 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1047874160, now seen corresponding path program 1 times [2022-04-18 16:33:10,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:10,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936155363] [2022-04-18 16:33:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:10,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:10,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936155363] [2022-04-18 16:33:10,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936155363] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:10,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:10,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:10,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422348782] [2022-04-18 16:33:10,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:10,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:10,293 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:10,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 960 transitions, 1933 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:10,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:10,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:10,618 INFO L129 PetriNetUnfolder]: 50/1413 cut-off events. [2022-04-18 16:33:10,618 INFO L130 PetriNetUnfolder]: For 12/44 co-relation queries the response was YES. [2022-04-18 16:33:10,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 1413 events. 50/1413 cut-off events. For 12/44 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5436 event pairs, 18 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 1443. Up to 55 conditions per place. [2022-04-18 16:33:10,663 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/959 dead transitions. [2022-04-18 16:33:10,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 950 places, 959 transitions, 1971 flow [2022-04-18 16:33:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:10,670 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:10,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:10,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:10,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,682 INFO L186 Difference]: Start difference. First operand has 949 places, 960 transitions, 1933 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:10,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 950 places, 959 transitions, 1971 flow [2022-04-18 16:33:10,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 948 places, 959 transitions, 1967 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:10,699 INFO L242 Difference]: Finished difference. Result has 948 places, 959 transitions, 1931 flow [2022-04-18 16:33:10,701 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1931, PETRI_PLACES=948, PETRI_TRANSITIONS=959} [2022-04-18 16:33:10,702 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -55 predicate places. [2022-04-18 16:33:10,702 INFO L478 AbstractCegarLoop]: Abstraction has has 948 places, 959 transitions, 1931 flow [2022-04-18 16:33:10,703 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:10,703 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] [2022-04-18 16:33:10,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 16:33:10,704 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 21450964, now seen corresponding path program 1 times [2022-04-18 16:33:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:10,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258966367] [2022-04-18 16:33:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:10,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:10,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258966367] [2022-04-18 16:33:10,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258966367] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:10,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:10,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:10,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083896691] [2022-04-18 16:33:10,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:10,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:10,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:10,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:10,738 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:10,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 948 places, 959 transitions, 1931 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:10,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:10,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:10,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:11,093 INFO L129 PetriNetUnfolder]: 50/1374 cut-off events. [2022-04-18 16:33:11,093 INFO L130 PetriNetUnfolder]: For 12/44 co-relation queries the response was YES. [2022-04-18 16:33:11,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 1374 events. 50/1374 cut-off events. For 12/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5333 event pairs, 18 based on Foata normal form. 0/1192 useless extension candidates. Maximal degree in co-relation 1404. Up to 55 conditions per place. [2022-04-18 16:33:11,129 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/958 dead transitions. [2022-04-18 16:33:11,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 949 places, 958 transitions, 1969 flow [2022-04-18 16:33:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:11,134 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:11,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:11,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,144 INFO L186 Difference]: Start difference. First operand has 948 places, 959 transitions, 1931 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:11,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 949 places, 958 transitions, 1969 flow [2022-04-18 16:33:11,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 958 transitions, 1965 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:11,162 INFO L242 Difference]: Finished difference. Result has 947 places, 958 transitions, 1929 flow [2022-04-18 16:33:11,164 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=956, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1929, PETRI_PLACES=947, PETRI_TRANSITIONS=958} [2022-04-18 16:33:11,165 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -56 predicate places. [2022-04-18 16:33:11,165 INFO L478 AbstractCegarLoop]: Abstraction has has 947 places, 958 transitions, 1929 flow [2022-04-18 16:33:11,166 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,166 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:11,166 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] [2022-04-18 16:33:11,166 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 16:33:11,166 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:11,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash -925178983, now seen corresponding path program 1 times [2022-04-18 16:33:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:11,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735017723] [2022-04-18 16:33:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735017723] [2022-04-18 16:33:11,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735017723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:11,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:11,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814370271] [2022-04-18 16:33:11,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:11,199 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:11,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:11,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:11,203 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:11,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 947 places, 958 transitions, 1929 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:11,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:11,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:11,439 INFO L129 PetriNetUnfolder]: 26/993 cut-off events. [2022-04-18 16:33:11,440 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2022-04-18 16:33:11,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 993 events. 26/993 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2393 event pairs, 6 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 989. Up to 30 conditions per place. [2022-04-18 16:33:11,461 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 17 selfloop transitions, 2 changer transitions 0/957 dead transitions. [2022-04-18 16:33:11,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 957 transitions, 1965 flow [2022-04-18 16:33:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3077 transitions. [2022-04-18 16:33:11,467 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9585669781931464 [2022-04-18 16:33:11,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3077 transitions. [2022-04-18 16:33:11,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3077 transitions. [2022-04-18 16:33:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:11,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3077 transitions. [2022-04-18 16:33:11,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1025.6666666666667) internal successors, (3077), 3 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,477 INFO L186 Difference]: Start difference. First operand has 947 places, 958 transitions, 1929 flow. Second operand 3 states and 3077 transitions. [2022-04-18 16:33:11,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 957 transitions, 1965 flow [2022-04-18 16:33:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 957 transitions, 1961 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:11,494 INFO L242 Difference]: Finished difference. Result has 946 places, 957 transitions, 1927 flow [2022-04-18 16:33:11,496 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1927, PETRI_PLACES=946, PETRI_TRANSITIONS=957} [2022-04-18 16:33:11,496 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -57 predicate places. [2022-04-18 16:33:11,497 INFO L478 AbstractCegarLoop]: Abstraction has has 946 places, 957 transitions, 1927 flow [2022-04-18 16:33:11,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,497 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:11,498 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] [2022-04-18 16:33:11,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 16:33:11,498 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:11,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1515436126, now seen corresponding path program 1 times [2022-04-18 16:33:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:11,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162691670] [2022-04-18 16:33:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:11,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162691670] [2022-04-18 16:33:11,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162691670] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:11,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:11,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116509385] [2022-04-18 16:33:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:11,527 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:11,531 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:11,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 957 transitions, 1927 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:11,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:11,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:11,825 INFO L129 PetriNetUnfolder]: 46/1244 cut-off events. [2022-04-18 16:33:11,826 INFO L130 PetriNetUnfolder]: For 21/23 co-relation queries the response was YES. [2022-04-18 16:33:11,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 1244 events. 46/1244 cut-off events. For 21/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3977 event pairs, 18 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 1265. Up to 55 conditions per place. [2022-04-18 16:33:11,853 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/956 dead transitions. [2022-04-18 16:33:11,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 956 transitions, 1965 flow [2022-04-18 16:33:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:11,860 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:11,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:11,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:11,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,869 INFO L186 Difference]: Start difference. First operand has 946 places, 957 transitions, 1927 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:11,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 956 transitions, 1965 flow [2022-04-18 16:33:11,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 956 transitions, 1961 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:11,886 INFO L242 Difference]: Finished difference. Result has 945 places, 956 transitions, 1925 flow [2022-04-18 16:33:11,887 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1925, PETRI_PLACES=945, PETRI_TRANSITIONS=956} [2022-04-18 16:33:11,888 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -58 predicate places. [2022-04-18 16:33:11,888 INFO L478 AbstractCegarLoop]: Abstraction has has 945 places, 956 transitions, 1925 flow [2022-04-18 16:33:11,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:11,889 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] [2022-04-18 16:33:11,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 16:33:11,889 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash -379848582, now seen corresponding path program 1 times [2022-04-18 16:33:11,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:11,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71399979] [2022-04-18 16:33:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:11,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:11,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71399979] [2022-04-18 16:33:11,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71399979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:11,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:11,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249925164] [2022-04-18 16:33:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:11,918 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:11,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:11,922 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1019 out of 1070 [2022-04-18 16:33:11,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 956 transitions, 1925 flow. Second operand has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:11,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:11,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1019 of 1070 [2022-04-18 16:33:11,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:12,156 INFO L129 PetriNetUnfolder]: 46/1205 cut-off events. [2022-04-18 16:33:12,156 INFO L130 PetriNetUnfolder]: For 21/23 co-relation queries the response was YES. [2022-04-18 16:33:12,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 1205 events. 46/1205 cut-off events. For 21/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3741 event pairs, 18 based on Foata normal form. 0/1054 useless extension candidates. Maximal degree in co-relation 1226. Up to 55 conditions per place. [2022-04-18 16:33:12,171 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 18 selfloop transitions, 2 changer transitions 0/955 dead transitions. [2022-04-18 16:33:12,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 946 places, 955 transitions, 1963 flow [2022-04-18 16:33:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3078 transitions. [2022-04-18 16:33:12,176 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9588785046728971 [2022-04-18 16:33:12,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3078 transitions. [2022-04-18 16:33:12,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3078 transitions. [2022-04-18 16:33:12,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:12,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3078 transitions. [2022-04-18 16:33:12,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1026.0) internal successors, (3078), 3 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:12,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:12,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:12,182 INFO L186 Difference]: Start difference. First operand has 945 places, 956 transitions, 1925 flow. Second operand 3 states and 3078 transitions. [2022-04-18 16:33:12,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 946 places, 955 transitions, 1963 flow [2022-04-18 16:33:12,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 944 places, 955 transitions, 1959 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:12,198 INFO L242 Difference]: Finished difference. Result has 944 places, 955 transitions, 1923 flow [2022-04-18 16:33:12,199 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1923, PETRI_PLACES=944, PETRI_TRANSITIONS=955} [2022-04-18 16:33:12,200 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -59 predicate places. [2022-04-18 16:33:12,200 INFO L478 AbstractCegarLoop]: Abstraction has has 944 places, 955 transitions, 1923 flow [2022-04-18 16:33:12,201 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1020.3333333333334) internal successors, (3061), 3 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:12,201 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:12,201 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] [2022-04-18 16:33:12,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 16:33:12,201 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 47789874, now seen corresponding path program 1 times [2022-04-18 16:33:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:12,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942539628] [2022-04-18 16:33:12,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:12,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942539628] [2022-04-18 16:33:12,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942539628] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:12,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:12,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219924978] [2022-04-18 16:33:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:12,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:12,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:12,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:12,245 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 1016 out of 1070 [2022-04-18 16:33:12,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 955 transitions, 1923 flow. Second operand has 3 states, 3 states have (on average 1017.3333333333334) internal successors, (3052), 3 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:12,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:12,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1016 of 1070 [2022-04-18 16:33:12,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:13,082 INFO L129 PetriNetUnfolder]: 206/3660 cut-off events. [2022-04-18 16:33:13,082 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-04-18 16:33:13,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 3660 events. 206/3660 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26351 event pairs, 132 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 3936. Up to 256 conditions per place. [2022-04-18 16:33:13,164 INFO L132 encePairwiseOnDemand]: 1067/1070 looper letters, 21 selfloop transitions, 2 changer transitions 0/954 dead transitions. [2022-04-18 16:33:13,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 954 transitions, 1967 flow [2022-04-18 16:33:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:13,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3072 transitions. [2022-04-18 16:33:13,171 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9570093457943926 [2022-04-18 16:33:13,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3072 transitions. [2022-04-18 16:33:13,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3072 transitions. [2022-04-18 16:33:13,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:13,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3072 transitions. [2022-04-18 16:33:13,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1024.0) internal successors, (3072), 3 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:13,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:13,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1070.0) internal successors, (4280), 4 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:13,178 INFO L186 Difference]: Start difference. First operand has 944 places, 955 transitions, 1923 flow. Second operand 3 states and 3072 transitions. [2022-04-18 16:33:13,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 954 transitions, 1967 flow [2022-04-18 16:33:13,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 954 transitions, 1963 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:13,194 INFO L242 Difference]: Finished difference. Result has 943 places, 954 transitions, 1921 flow [2022-04-18 16:33:13,195 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=1070, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=952, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1921, PETRI_PLACES=943, PETRI_TRANSITIONS=954} [2022-04-18 16:33:13,196 INFO L335 CegarLoopForPetriNet]: 1003 programPoint places, -60 predicate places. [2022-04-18 16:33:13,196 INFO L478 AbstractCegarLoop]: Abstraction has has 943 places, 954 transitions, 1921 flow [2022-04-18 16:33:13,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1017.3333333333334) internal successors, (3052), 3 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:13,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:13,197 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] [2022-04-18 16:33:13,197 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 16:33:13,197 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2022-04-18 16:33:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1880178902, now seen corresponding path program 1 times [2022-04-18 16:33:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:13,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233398504] [2022-04-18 16:33:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:13,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:33:13,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:13,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233398504] [2022-04-18 16:33:13,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233398504] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:13,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:13,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:13,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912603077] [2022-04-18 16:33:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:13,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:13,325 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 866 out of 1070 [2022-04-18 16:33:13,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 954 transitions, 1921 flow. Second operand has 6 states, 6 states have (on average 867.8333333333334) internal successors, (5207), 6 states have internal predecessors, (5207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:13,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:13,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 866 of 1070 [2022-04-18 16:33:13,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand