./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:32:16,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:32:16,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:32:16,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:32:16,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:32:16,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:32:16,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:32:16,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:32:16,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:32:16,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:32:16,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:32:16,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:32:16,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:32:16,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:32:16,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:32:16,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:32:16,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:32:16,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:32:16,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:32:16,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:32:16,194 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:32:16,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:32:16,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:32:16,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:32:16,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:32:16,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:32:16,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:32:16,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:32:16,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:32:16,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:32:16,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:32:16,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:32:16,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:32:16,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:32:16,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:32:16,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:32:16,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:32:16,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:32:16,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:32:16,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:32:16,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:32:16,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:32:16,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:32:16,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:32:16,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:32:16,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:32:16,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:32:16,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:32:16,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:32:16,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:32:16,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:32:16,241 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:32:16,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:32:16,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:32:16,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:32:16,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:32:16,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:32:16,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:32:16,243 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:32:16,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:32:16,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:32:16,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:32:16,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:32:16,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:32:16,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:32:16,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:32:16,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:32:16,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:32:16,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:32:16,246 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:32:16,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:32:16,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:32:16,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-04-18 16:32:16,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:32:16,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:32:16,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:32:16,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:32:16,482 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:32:16,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2022-04-18 16:32:16,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19243be86/bd2060983e4942a49ce3b26c850fec74/FLAGa15682bd9 [2022-04-18 16:32:16,846 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:32:16,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2022-04-18 16:32:16,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19243be86/bd2060983e4942a49ce3b26c850fec74/FLAGa15682bd9 [2022-04-18 16:32:17,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19243be86/bd2060983e4942a49ce3b26c850fec74 [2022-04-18 16:32:17,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:32:17,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:32:17,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:32:17,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:32:17,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:32:17,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ed632d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17, skipping insertion in model container [2022-04-18 16:32:17,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:32:17,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:32:17,511 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-chromosome-symm.wvr.c[2695,2708] [2022-04-18 16:32:17,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:32:17,520 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:32:17,538 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-chromosome-symm.wvr.c[2695,2708] [2022-04-18 16:32:17,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:32:17,553 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:32:17,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17 WrapperNode [2022-04-18 16:32:17,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:32:17,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:32:17,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:32:17,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:32:17,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,590 INFO L137 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 334 [2022-04-18 16:32:17,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:32:17,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:32:17,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:32:17,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:32:17,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:32:17,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:32:17,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:32:17,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:32:17,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (1/1) ... [2022-04-18 16:32:17,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:32:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:32:17,644 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 16:32:17,652 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 16:32:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:32:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:32:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:32:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:32:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:32:17,680 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 16:32:17,745 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:32:17,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:32:18,126 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:32:18,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:32:18,145 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 16:32:18,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:32:18 BoogieIcfgContainer [2022-04-18 16:32:18,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:32:18,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:32:18,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:32:18,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:32:18,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:32:17" (1/3) ... [2022-04-18 16:32:18,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c45fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:32:18, skipping insertion in model container [2022-04-18 16:32:18,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:32:17" (2/3) ... [2022-04-18 16:32:18,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c45fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:32:18, skipping insertion in model container [2022-04-18 16:32:18,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:32:18" (3/3) ... [2022-04-18 16:32:18,176 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-04-18 16:32:18,181 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:32:18,181 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:32:18,182 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-04-18 16:32:18,182 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:32:18,275 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 16:32:18,307 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:32:18,311 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 16:32:18,311 INFO L341 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-04-18 16:32:18,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 423 places, 442 transitions, 900 flow [2022-04-18 16:32:18,412 INFO L129 PetriNetUnfolder]: 26/440 cut-off events. [2022-04-18 16:32:18,413 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 16:32:18,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 440 events. 26/440 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 704 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-04-18 16:32:18,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 442 transitions, 900 flow [2022-04-18 16:32:18,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 419 transitions, 850 flow [2022-04-18 16:32:18,437 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2022-04-18 16:32:18,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:32:18,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:18,437 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:32:18,438 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash -311777620, now seen corresponding path program 1 times [2022-04-18 16:32:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:18,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685557614] [2022-04-18 16:32:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:18,638 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 16:32:18,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:18,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685557614] [2022-04-18 16:32:18,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685557614] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:18,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:18,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372870605] [2022-04-18 16:32:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:18,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 16:32:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 16:32:18,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 16:32:18,677 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 442 [2022-04-18 16:32:18,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 419 transitions, 850 flow. Second operand has 2 states, 2 states have (on average 420.5) internal successors, (841), 2 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:18,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 442 [2022-04-18 16:32:18,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:18,755 INFO L129 PetriNetUnfolder]: 8/403 cut-off events. [2022-04-18 16:32:18,755 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-04-18 16:32:18,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 403 events. 8/403 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 695 event pairs, 0 based on Foata normal form. 18/366 useless extension candidates. Maximal degree in co-relation 243. Up to 5 conditions per place. [2022-04-18 16:32:18,761 INFO L132 encePairwiseOnDemand]: 426/442 looper letters, 4 selfloop transitions, 0 changer transitions 6/403 dead transitions. [2022-04-18 16:32:18,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 403 transitions, 826 flow [2022-04-18 16:32:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:32:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 16:32:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 860 transitions. [2022-04-18 16:32:18,775 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9728506787330317 [2022-04-18 16:32:18,775 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 860 transitions. [2022-04-18 16:32:18,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 860 transitions. [2022-04-18 16:32:18,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:18,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 860 transitions. [2022-04-18 16:32:18,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 430.0) internal successors, (860), 2 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,793 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,794 INFO L186 Difference]: Start difference. First operand has 402 places, 419 transitions, 850 flow. Second operand 2 states and 860 transitions. [2022-04-18 16:32:18,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 403 transitions, 826 flow [2022-04-18 16:32:18,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 403 transitions, 818 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 16:32:18,809 INFO L242 Difference]: Finished difference. Result has 399 places, 397 transitions, 798 flow [2022-04-18 16:32:18,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=798, PETRI_PLACES=399, PETRI_TRANSITIONS=397} [2022-04-18 16:32:18,813 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -3 predicate places. [2022-04-18 16:32:18,814 INFO L478 AbstractCegarLoop]: Abstraction has has 399 places, 397 transitions, 798 flow [2022-04-18 16:32:18,814 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 420.5) internal successors, (841), 2 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:18,815 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:32:18,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:32:18,815 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1431032715, now seen corresponding path program 1 times [2022-04-18 16:32:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614146460] [2022-04-18 16:32:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:18,895 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 16:32:18,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:18,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614146460] [2022-04-18 16:32:18,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614146460] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:18,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:18,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220124004] [2022-04-18 16:32:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:18,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:18,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:18,902 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-04-18 16:32:18,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 397 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:18,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:18,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-04-18 16:32:18,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:19,043 INFO L129 PetriNetUnfolder]: 42/926 cut-off events. [2022-04-18 16:32:19,044 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-04-18 16:32:19,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 926 events. 42/926 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4000 event pairs, 15 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 988. Up to 56 conditions per place. [2022-04-18 16:32:19,050 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/396 dead transitions. [2022-04-18 16:32:19,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 396 transitions, 826 flow [2022-04-18 16:32:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-04-18 16:32:19,053 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-04-18 16:32:19,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-04-18 16:32:19,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-04-18 16:32:19,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:19,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-04-18 16:32:19,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:19,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:19,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:19,058 INFO L186 Difference]: Start difference. First operand has 399 places, 397 transitions, 798 flow. Second operand 3 states and 1240 transitions. [2022-04-18 16:32:19,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 396 transitions, 826 flow [2022-04-18 16:32:19,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 396 transitions, 826 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:19,063 INFO L242 Difference]: Finished difference. Result has 394 places, 396 transitions, 800 flow [2022-04-18 16:32:19,064 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=800, PETRI_PLACES=394, PETRI_TRANSITIONS=396} [2022-04-18 16:32:19,065 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -8 predicate places. [2022-04-18 16:32:19,065 INFO L478 AbstractCegarLoop]: Abstraction has has 394 places, 396 transitions, 800 flow [2022-04-18 16:32:19,066 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:19,066 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:19,066 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:32:19,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:32:19,066 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash -970762140, now seen corresponding path program 1 times [2022-04-18 16:32:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:19,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782669728] [2022-04-18 16:32:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:19,195 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 16:32:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:19,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782669728] [2022-04-18 16:32:19,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782669728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:19,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:19,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488385730] [2022-04-18 16:32:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:19,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:19,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:19,199 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 442 [2022-04-18 16:32:19,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 396 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:19,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:19,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 442 [2022-04-18 16:32:19,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:20,904 INFO L129 PetriNetUnfolder]: 2470/13497 cut-off events. [2022-04-18 16:32:20,905 INFO L130 PetriNetUnfolder]: For 26/38 co-relation queries the response was YES. [2022-04-18 16:32:20,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17150 conditions, 13497 events. 2470/13497 cut-off events. For 26/38 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 154584 event pairs, 2112 based on Foata normal form. 0/11292 useless extension candidates. Maximal degree in co-relation 17146. Up to 3624 conditions per place. [2022-04-18 16:32:21,001 INFO L132 encePairwiseOnDemand]: 430/442 looper letters, 62 selfloop transitions, 10 changer transitions 0/394 dead transitions. [2022-04-18 16:32:21,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 394 transitions, 940 flow [2022-04-18 16:32:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:32:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:32:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2174 transitions. [2022-04-18 16:32:21,006 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8197586726998491 [2022-04-18 16:32:21,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2174 transitions. [2022-04-18 16:32:21,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2174 transitions. [2022-04-18 16:32:21,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2174 transitions. [2022-04-18 16:32:21,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.3333333333333) internal successors, (2174), 6 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,015 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,015 INFO L186 Difference]: Start difference. First operand has 394 places, 396 transitions, 800 flow. Second operand 6 states and 2174 transitions. [2022-04-18 16:32:21,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 394 transitions, 940 flow [2022-04-18 16:32:21,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 394 transitions, 936 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:21,020 INFO L242 Difference]: Finished difference. Result has 395 places, 394 transitions, 812 flow [2022-04-18 16:32:21,021 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=395, PETRI_TRANSITIONS=394} [2022-04-18 16:32:21,021 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -7 predicate places. [2022-04-18 16:32:21,022 INFO L478 AbstractCegarLoop]: Abstraction has has 395 places, 394 transitions, 812 flow [2022-04-18 16:32:21,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:32:21,023 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:32:21,023 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash 516599703, now seen corresponding path program 1 times [2022-04-18 16:32:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713237451] [2022-04-18 16:32:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,088 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 16:32:21,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713237451] [2022-04-18 16:32:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713237451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388142935] [2022-04-18 16:32:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,090 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:21,092 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-04-18 16:32:21,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 394 transitions, 812 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-04-18 16:32:21,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,187 INFO L129 PetriNetUnfolder]: 40/913 cut-off events. [2022-04-18 16:32:21,187 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-04-18 16:32:21,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 913 events. 40/913 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4058 event pairs, 15 based on Foata normal form. 0/782 useless extension candidates. Maximal degree in co-relation 983. Up to 54 conditions per place. [2022-04-18 16:32:21,195 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/393 dead transitions. [2022-04-18 16:32:21,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 393 transitions, 840 flow [2022-04-18 16:32:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-04-18 16:32:21,198 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-04-18 16:32:21,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,203 INFO L186 Difference]: Start difference. First operand has 395 places, 394 transitions, 812 flow. Second operand 3 states and 1240 transitions. [2022-04-18 16:32:21,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 393 transitions, 840 flow [2022-04-18 16:32:21,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 393 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:32:21,208 INFO L242 Difference]: Finished difference. Result has 391 places, 393 transitions, 794 flow [2022-04-18 16:32:21,209 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=391, PETRI_TRANSITIONS=393} [2022-04-18 16:32:21,209 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -11 predicate places. [2022-04-18 16:32:21,210 INFO L478 AbstractCegarLoop]: Abstraction has has 391 places, 393 transitions, 794 flow [2022-04-18 16:32:21,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,211 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,211 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] [2022-04-18 16:32:21,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:32:21,211 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2059602869, now seen corresponding path program 1 times [2022-04-18 16:32:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608782064] [2022-04-18 16:32:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,243 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 16:32:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608782064] [2022-04-18 16:32:21,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608782064] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:21,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472199836] [2022-04-18 16:32:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:21,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:21,246 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-04-18 16:32:21,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 393 transitions, 794 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-04-18 16:32:21,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,343 INFO L129 PetriNetUnfolder]: 35/966 cut-off events. [2022-04-18 16:32:21,343 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 16:32:21,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 966 events. 35/966 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4585 event pairs, 15 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 1018. Up to 44 conditions per place. [2022-04-18 16:32:21,351 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-04-18 16:32:21,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 392 transitions, 822 flow [2022-04-18 16:32:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-04-18 16:32:21,353 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-04-18 16:32:21,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,358 INFO L186 Difference]: Start difference. First operand has 391 places, 393 transitions, 794 flow. Second operand 3 states and 1240 transitions. [2022-04-18 16:32:21,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 392 transitions, 822 flow [2022-04-18 16:32:21,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 392 transitions, 818 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:21,364 INFO L242 Difference]: Finished difference. Result has 390 places, 392 transitions, 792 flow [2022-04-18 16:32:21,364 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=390, PETRI_TRANSITIONS=392} [2022-04-18 16:32:21,365 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -12 predicate places. [2022-04-18 16:32:21,365 INFO L478 AbstractCegarLoop]: Abstraction has has 390 places, 392 transitions, 792 flow [2022-04-18 16:32:21,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,366 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] [2022-04-18 16:32:21,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:32:21,366 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1623151406, now seen corresponding path program 1 times [2022-04-18 16:32:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308042120] [2022-04-18 16:32:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,398 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 16:32:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308042120] [2022-04-18 16:32:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308042120] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689008168] [2022-04-18 16:32:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:21,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:21,401 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 442 [2022-04-18 16:32:21,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 392 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 442 [2022-04-18 16:32:21,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,484 INFO L129 PetriNetUnfolder]: 33/894 cut-off events. [2022-04-18 16:32:21,485 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 16:32:21,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 894 events. 33/894 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4357 event pairs, 15 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 946. Up to 44 conditions per place. [2022-04-18 16:32:21,492 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/391 dead transitions. [2022-04-18 16:32:21,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 391 transitions, 820 flow [2022-04-18 16:32:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2022-04-18 16:32:21,494 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9351432880844646 [2022-04-18 16:32:21,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1240 transitions. [2022-04-18 16:32:21,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,499 INFO L186 Difference]: Start difference. First operand has 390 places, 392 transitions, 792 flow. Second operand 3 states and 1240 transitions. [2022-04-18 16:32:21,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 391 transitions, 820 flow [2022-04-18 16:32:21,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 391 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:21,504 INFO L242 Difference]: Finished difference. Result has 389 places, 391 transitions, 790 flow [2022-04-18 16:32:21,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=790, PETRI_PLACES=389, PETRI_TRANSITIONS=391} [2022-04-18 16:32:21,505 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -13 predicate places. [2022-04-18 16:32:21,506 INFO L478 AbstractCegarLoop]: Abstraction has has 389 places, 391 transitions, 790 flow [2022-04-18 16:32:21,506 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,506 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] [2022-04-18 16:32:21,506 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:32:21,507 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1393881168, now seen corresponding path program 1 times [2022-04-18 16:32:21,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483725187] [2022-04-18 16:32:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,551 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 16:32:21,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483725187] [2022-04-18 16:32:21,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483725187] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633482907] [2022-04-18 16:32:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,554 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:21,558 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-04-18 16:32:21,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 391 transitions, 790 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-04-18 16:32:21,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,637 INFO L129 PetriNetUnfolder]: 26/863 cut-off events. [2022-04-18 16:32:21,638 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 16:32:21,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 863 events. 26/863 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3698 event pairs, 4 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 895. Up to 22 conditions per place. [2022-04-18 16:32:21,644 INFO L132 encePairwiseOnDemand]: 438/442 looper letters, 11 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-04-18 16:32:21,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 392 transitions, 819 flow [2022-04-18 16:32:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2022-04-18 16:32:21,647 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-04-18 16:32:21,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,672 INFO L186 Difference]: Start difference. First operand has 389 places, 391 transitions, 790 flow. Second operand 3 states and 1248 transitions. [2022-04-18 16:32:21,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 392 transitions, 819 flow [2022-04-18 16:32:21,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 392 transitions, 815 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:21,677 INFO L242 Difference]: Finished difference. Result has 388 places, 391 transitions, 796 flow [2022-04-18 16:32:21,677 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=796, PETRI_PLACES=388, PETRI_TRANSITIONS=391} [2022-04-18 16:32:21,679 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -14 predicate places. [2022-04-18 16:32:21,679 INFO L478 AbstractCegarLoop]: Abstraction has has 388 places, 391 transitions, 796 flow [2022-04-18 16:32:21,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,680 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] [2022-04-18 16:32:21,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:32:21,680 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,681 INFO L85 PathProgramCache]: Analyzing trace with hash -583547998, now seen corresponding path program 1 times [2022-04-18 16:32:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625971284] [2022-04-18 16:32:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,711 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 16:32:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625971284] [2022-04-18 16:32:21,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625971284] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592269192] [2022-04-18 16:32:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,713 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:21,715 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-04-18 16:32:21,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 391 transitions, 796 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-04-18 16:32:21,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,778 INFO L129 PetriNetUnfolder]: 27/861 cut-off events. [2022-04-18 16:32:21,778 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 16:32:21,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 861 events. 27/861 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4082 event pairs, 3 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 898. Up to 22 conditions per place. [2022-04-18 16:32:21,784 INFO L132 encePairwiseOnDemand]: 438/442 looper letters, 11 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2022-04-18 16:32:21,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 392 transitions, 825 flow [2022-04-18 16:32:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1248 transitions. [2022-04-18 16:32:21,787 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-04-18 16:32:21,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1248 transitions. [2022-04-18 16:32:21,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.0) internal successors, (1248), 3 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,791 INFO L186 Difference]: Start difference. First operand has 388 places, 391 transitions, 796 flow. Second operand 3 states and 1248 transitions. [2022-04-18 16:32:21,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 392 transitions, 825 flow [2022-04-18 16:32:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 392 transitions, 825 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:21,796 INFO L242 Difference]: Finished difference. Result has 389 places, 391 transitions, 806 flow [2022-04-18 16:32:21,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=389, PETRI_TRANSITIONS=391} [2022-04-18 16:32:21,798 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -13 predicate places. [2022-04-18 16:32:21,798 INFO L478 AbstractCegarLoop]: Abstraction has has 389 places, 391 transitions, 806 flow [2022-04-18 16:32:21,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,799 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:21,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:32:21,799 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -827319148, now seen corresponding path program 1 times [2022-04-18 16:32:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015900953] [2022-04-18 16:32:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:21,840 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 16:32:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015900953] [2022-04-18 16:32:21,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015900953] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:21,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:21,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434074187] [2022-04-18 16:32:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:21,842 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 16:32:21,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:21,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 16:32:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-18 16:32:21,844 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 442 [2022-04-18 16:32:21,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 391 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:21,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 442 [2022-04-18 16:32:21,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:21,953 INFO L129 PetriNetUnfolder]: 14/600 cut-off events. [2022-04-18 16:32:21,953 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2022-04-18 16:32:21,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 600 events. 14/600 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1853 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 671. Up to 36 conditions per place. [2022-04-18 16:32:21,958 INFO L132 encePairwiseOnDemand]: 432/442 looper letters, 48 selfloop transitions, 8 changer transitions 0/409 dead transitions. [2022-04-18 16:32:21,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 409 transitions, 954 flow [2022-04-18 16:32:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-18 16:32:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-04-18 16:32:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1978 transitions. [2022-04-18 16:32:21,961 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8950226244343892 [2022-04-18 16:32:21,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1978 transitions. [2022-04-18 16:32:21,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1978 transitions. [2022-04-18 16:32:21,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:21,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1978 transitions. [2022-04-18 16:32:21,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 395.6) internal successors, (1978), 5 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,968 INFO L186 Difference]: Start difference. First operand has 389 places, 391 transitions, 806 flow. Second operand 5 states and 1978 transitions. [2022-04-18 16:32:21,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 409 transitions, 954 flow [2022-04-18 16:32:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 409 transitions, 954 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:21,974 INFO L242 Difference]: Finished difference. Result has 394 places, 393 transitions, 838 flow [2022-04-18 16:32:21,974 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=838, PETRI_PLACES=394, PETRI_TRANSITIONS=393} [2022-04-18 16:32:21,975 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -8 predicate places. [2022-04-18 16:32:21,975 INFO L478 AbstractCegarLoop]: Abstraction has has 394 places, 393 transitions, 838 flow [2022-04-18 16:32:21,976 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:21,976 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:21,977 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:32:21,977 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 16:32:21,977 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:21,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1396532050, now seen corresponding path program 1 times [2022-04-18 16:32:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086431900] [2022-04-18 16:32:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 16:32:22,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:22,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086431900] [2022-04-18 16:32:22,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086431900] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:32:22,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627383700] [2022-04-18 16:32:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:22,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:32:22,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:32:22,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:32:22,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 16:32:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 16:32:22,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:32:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 16:32:22,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:32:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 16:32:22,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627383700] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:32:22,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:32:22,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-04-18 16:32:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809586126] [2022-04-18 16:32:22,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:32:22,668 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-18 16:32:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-18 16:32:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-18 16:32:22,680 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 442 [2022-04-18 16:32:22,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 393 transitions, 838 flow. Second operand has 15 states, 15 states have (on average 386.53333333333336) internal successors, (5798), 15 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:22,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:22,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 442 [2022-04-18 16:32:22,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:22,902 INFO L129 PetriNetUnfolder]: 14/632 cut-off events. [2022-04-18 16:32:22,902 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2022-04-18 16:32:22,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 632 events. 14/632 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1807 event pairs, 0 based on Foata normal form. 4/572 useless extension candidates. Maximal degree in co-relation 745. Up to 20 conditions per place. [2022-04-18 16:32:22,907 INFO L132 encePairwiseOnDemand]: 426/442 looper letters, 60 selfloop transitions, 22 changer transitions 0/433 dead transitions. [2022-04-18 16:32:22,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 433 transitions, 1086 flow [2022-04-18 16:32:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-18 16:32:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-04-18 16:32:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4288 transitions. [2022-04-18 16:32:22,916 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8819415878239407 [2022-04-18 16:32:22,916 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4288 transitions. [2022-04-18 16:32:22,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4288 transitions. [2022-04-18 16:32:22,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:22,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4288 transitions. [2022-04-18 16:32:22,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 389.8181818181818) internal successors, (4288), 11 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:22,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:22,929 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:22,929 INFO L186 Difference]: Start difference. First operand has 394 places, 393 transitions, 838 flow. Second operand 11 states and 4288 transitions. [2022-04-18 16:32:22,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 433 transitions, 1086 flow [2022-04-18 16:32:22,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 433 transitions, 1074 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-04-18 16:32:22,936 INFO L242 Difference]: Finished difference. Result has 404 places, 405 transitions, 937 flow [2022-04-18 16:32:22,937 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=937, PETRI_PLACES=404, PETRI_TRANSITIONS=405} [2022-04-18 16:32:22,937 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 2 predicate places. [2022-04-18 16:32:22,938 INFO L478 AbstractCegarLoop]: Abstraction has has 404 places, 405 transitions, 937 flow [2022-04-18 16:32:22,939 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 386.53333333333336) internal successors, (5798), 15 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:22,939 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:22,940 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:22,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 16:32:23,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-18 16:32:23,171 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2110917710, now seen corresponding path program 2 times [2022-04-18 16:32:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:23,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726300146] [2022-04-18 16:32:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:23,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-18 16:32:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726300146] [2022-04-18 16:32:23,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726300146] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:32:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610359976] [2022-04-18 16:32:23,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 16:32:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:32:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:32:23,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:32:23,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 16:32:23,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 16:32:23,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:32:23,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-18 16:32:23,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:32:23,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 16:32:23,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 16:32:23,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:32:23,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 16:32:23,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:32:23,774 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:32:23,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 16:32:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:23,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:32:23,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610359976] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:23,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 16:32:23,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-04-18 16:32:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351891830] [2022-04-18 16:32:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:23,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:32:23,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:32:23,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-04-18 16:32:23,798 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 442 [2022-04-18 16:32:23,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 405 transitions, 937 flow. Second operand has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:23,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:23,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 442 [2022-04-18 16:32:23,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:25,294 INFO L129 PetriNetUnfolder]: 2581/10631 cut-off events. [2022-04-18 16:32:25,294 INFO L130 PetriNetUnfolder]: For 28/129 co-relation queries the response was YES. [2022-04-18 16:32:25,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14690 conditions, 10631 events. 2581/10631 cut-off events. For 28/129 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 106522 event pairs, 780 based on Foata normal form. 34/9175 useless extension candidates. Maximal degree in co-relation 14680. Up to 1319 conditions per place. [2022-04-18 16:32:25,367 INFO L132 encePairwiseOnDemand]: 436/442 looper letters, 144 selfloop transitions, 5 changer transitions 0/500 dead transitions. [2022-04-18 16:32:25,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 500 transitions, 1425 flow [2022-04-18 16:32:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-18 16:32:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-04-18 16:32:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2712 transitions. [2022-04-18 16:32:25,371 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8765352294764059 [2022-04-18 16:32:25,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2712 transitions. [2022-04-18 16:32:25,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2712 transitions. [2022-04-18 16:32:25,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:25,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2712 transitions. [2022-04-18 16:32:25,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 387.42857142857144) internal successors, (2712), 7 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,379 INFO L186 Difference]: Start difference. First operand has 404 places, 405 transitions, 937 flow. Second operand 7 states and 2712 transitions. [2022-04-18 16:32:25,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 500 transitions, 1425 flow [2022-04-18 16:32:25,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 500 transitions, 1408 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-04-18 16:32:25,387 INFO L242 Difference]: Finished difference. Result has 406 places, 404 transitions, 928 flow [2022-04-18 16:32:25,388 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=928, PETRI_PLACES=406, PETRI_TRANSITIONS=404} [2022-04-18 16:32:25,388 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 4 predicate places. [2022-04-18 16:32:25,388 INFO L478 AbstractCegarLoop]: Abstraction has has 406 places, 404 transitions, 928 flow [2022-04-18 16:32:25,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,389 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:25,389 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:25,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 16:32:25,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-18 16:32:25,596 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1734871073, now seen corresponding path program 1 times [2022-04-18 16:32:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:25,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963357708] [2022-04-18 16:32:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:25,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963357708] [2022-04-18 16:32:25,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963357708] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:25,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:25,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156888163] [2022-04-18 16:32:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:25,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:25,648 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-04-18 16:32:25,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 404 transitions, 928 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:25,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-04-18 16:32:25,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:25,747 INFO L129 PetriNetUnfolder]: 33/737 cut-off events. [2022-04-18 16:32:25,747 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-04-18 16:32:25,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 737 events. 33/737 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2726 event pairs, 14 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 902. Up to 71 conditions per place. [2022-04-18 16:32:25,753 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 28 selfloop transitions, 2 changer transitions 0/404 dead transitions. [2022-04-18 16:32:25,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 404 transitions, 989 flow [2022-04-18 16:32:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2022-04-18 16:32:25,755 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9147812971342383 [2022-04-18 16:32:25,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1213 transitions. [2022-04-18 16:32:25,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1213 transitions. [2022-04-18 16:32:25,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:25,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1213 transitions. [2022-04-18 16:32:25,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,759 INFO L186 Difference]: Start difference. First operand has 406 places, 404 transitions, 928 flow. Second operand 3 states and 1213 transitions. [2022-04-18 16:32:25,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 404 transitions, 989 flow [2022-04-18 16:32:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 404 transitions, 980 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:32:25,765 INFO L242 Difference]: Finished difference. Result has 402 places, 403 transitions, 921 flow [2022-04-18 16:32:25,766 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=921, PETRI_PLACES=402, PETRI_TRANSITIONS=403} [2022-04-18 16:32:25,766 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 0 predicate places. [2022-04-18 16:32:25,767 INFO L478 AbstractCegarLoop]: Abstraction has has 402 places, 403 transitions, 921 flow [2022-04-18 16:32:25,767 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,767 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:25,767 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:25,768 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 16:32:25,768 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 336570330, now seen corresponding path program 1 times [2022-04-18 16:32:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115114999] [2022-04-18 16:32:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:25,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115114999] [2022-04-18 16:32:25,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115114999] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:25,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:25,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:25,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526548085] [2022-04-18 16:32:25,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:25,911 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:25,913 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-04-18 16:32:25,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 403 transitions, 921 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:25,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:25,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-04-18 16:32:25,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:26,066 INFO L129 PetriNetUnfolder]: 43/1183 cut-off events. [2022-04-18 16:32:26,066 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-04-18 16:32:26,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 1183 events. 43/1183 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5428 event pairs, 2 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 1299. Up to 41 conditions per place. [2022-04-18 16:32:26,075 INFO L132 encePairwiseOnDemand]: 438/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/406 dead transitions. [2022-04-18 16:32:26,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 406 transitions, 960 flow [2022-04-18 16:32:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2022-04-18 16:32:26,077 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.942684766214178 [2022-04-18 16:32:26,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2022-04-18 16:32:26,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2022-04-18 16:32:26,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:26,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2022-04-18 16:32:26,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,082 INFO L186 Difference]: Start difference. First operand has 402 places, 403 transitions, 921 flow. Second operand 3 states and 1250 transitions. [2022-04-18 16:32:26,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 406 transitions, 960 flow [2022-04-18 16:32:26,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 406 transitions, 956 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:26,088 INFO L242 Difference]: Finished difference. Result has 401 places, 403 transitions, 927 flow [2022-04-18 16:32:26,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=927, PETRI_PLACES=401, PETRI_TRANSITIONS=403} [2022-04-18 16:32:26,088 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -1 predicate places. [2022-04-18 16:32:26,088 INFO L478 AbstractCegarLoop]: Abstraction has has 401 places, 403 transitions, 927 flow [2022-04-18 16:32:26,089 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:26,089 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:26,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 16:32:26,089 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1843714889, now seen corresponding path program 1 times [2022-04-18 16:32:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:26,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343416370] [2022-04-18 16:32:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343416370] [2022-04-18 16:32:26,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343416370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:26,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:26,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76833649] [2022-04-18 16:32:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:26,135 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:26,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:26,137 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 442 [2022-04-18 16:32:26,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 403 transitions, 927 flow. Second operand has 3 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:26,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 442 [2022-04-18 16:32:26,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:26,290 INFO L129 PetriNetUnfolder]: 49/1197 cut-off events. [2022-04-18 16:32:26,290 INFO L130 PetriNetUnfolder]: For 16/35 co-relation queries the response was YES. [2022-04-18 16:32:26,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1197 events. 49/1197 cut-off events. For 16/35 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5402 event pairs, 12 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 1395. Up to 61 conditions per place. [2022-04-18 16:32:26,301 INFO L132 encePairwiseOnDemand]: 432/442 looper letters, 21 selfloop transitions, 5 changer transitions 0/402 dead transitions. [2022-04-18 16:32:26,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 402 transitions, 978 flow [2022-04-18 16:32:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-04-18 16:32:26,303 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9193061840120663 [2022-04-18 16:32:26,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-04-18 16:32:26,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-04-18 16:32:26,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:26,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-04-18 16:32:26,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,307 INFO L186 Difference]: Start difference. First operand has 401 places, 403 transitions, 927 flow. Second operand 3 states and 1219 transitions. [2022-04-18 16:32:26,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 402 transitions, 978 flow [2022-04-18 16:32:26,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 402 transitions, 978 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:26,313 INFO L242 Difference]: Finished difference. Result has 400 places, 401 transitions, 949 flow [2022-04-18 16:32:26,313 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=949, PETRI_PLACES=400, PETRI_TRANSITIONS=401} [2022-04-18 16:32:26,313 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -2 predicate places. [2022-04-18 16:32:26,314 INFO L478 AbstractCegarLoop]: Abstraction has has 400 places, 401 transitions, 949 flow [2022-04-18 16:32:26,314 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.6666666666667) internal successors, (1193), 3 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:26,314 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:26,314 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 16:32:26,314 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1946456246, now seen corresponding path program 1 times [2022-04-18 16:32:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:26,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362769065] [2022-04-18 16:32:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:26,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:26,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362769065] [2022-04-18 16:32:26,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362769065] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:26,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:26,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251557053] [2022-04-18 16:32:26,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:26,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:26,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:26,366 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-04-18 16:32:26,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 401 transitions, 949 flow. Second operand has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:26,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-04-18 16:32:26,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:26,534 INFO L129 PetriNetUnfolder]: 74/1182 cut-off events. [2022-04-18 16:32:26,534 INFO L130 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2022-04-18 16:32:26,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 1182 events. 74/1182 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5883 event pairs, 23 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 1457. Up to 151 conditions per place. [2022-04-18 16:32:26,543 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 27 selfloop transitions, 2 changer transitions 0/401 dead transitions. [2022-04-18 16:32:26,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 401 transitions, 1008 flow [2022-04-18 16:32:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1212 transitions. [2022-04-18 16:32:26,546 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9140271493212669 [2022-04-18 16:32:26,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1212 transitions. [2022-04-18 16:32:26,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1212 transitions. [2022-04-18 16:32:26,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:26,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1212 transitions. [2022-04-18 16:32:26,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,550 INFO L186 Difference]: Start difference. First operand has 400 places, 401 transitions, 949 flow. Second operand 3 states and 1212 transitions. [2022-04-18 16:32:26,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 401 transitions, 1008 flow [2022-04-18 16:32:26,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 401 transitions, 998 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:26,555 INFO L242 Difference]: Finished difference. Result has 399 places, 400 transitions, 941 flow [2022-04-18 16:32:26,555 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=941, PETRI_PLACES=399, PETRI_TRANSITIONS=400} [2022-04-18 16:32:26,556 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -3 predicate places. [2022-04-18 16:32:26,556 INFO L478 AbstractCegarLoop]: Abstraction has has 399 places, 400 transitions, 941 flow [2022-04-18 16:32:26,556 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.6666666666667) internal successors, (1187), 3 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,557 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:26,558 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:26,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 16:32:26,558 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2099113054, now seen corresponding path program 1 times [2022-04-18 16:32:26,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082223933] [2022-04-18 16:32:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-04-18 16:32:26,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:26,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082223933] [2022-04-18 16:32:26,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082223933] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:26,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:26,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-18 16:32:26,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267106405] [2022-04-18 16:32:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:26,646 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-18 16:32:26,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:26,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-18 16:32:26,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-18 16:32:26,648 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 442 [2022-04-18 16:32:26,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 400 transitions, 941 flow. Second operand has 4 states, 4 states have (on average 398.25) internal successors, (1593), 4 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:26,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 442 [2022-04-18 16:32:26,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:26,899 INFO L129 PetriNetUnfolder]: 76/1394 cut-off events. [2022-04-18 16:32:26,899 INFO L130 PetriNetUnfolder]: For 20/72 co-relation queries the response was YES. [2022-04-18 16:32:26,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 1394 events. 76/1394 cut-off events. For 20/72 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6981 event pairs, 22 based on Foata normal form. 3/1261 useless extension candidates. Maximal degree in co-relation 1748. Up to 94 conditions per place. [2022-04-18 16:32:26,907 INFO L132 encePairwiseOnDemand]: 437/442 looper letters, 50 selfloop transitions, 4 changer transitions 0/426 dead transitions. [2022-04-18 16:32:26,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 426 transitions, 1106 flow [2022-04-18 16:32:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-18 16:32:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-04-18 16:32:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2040 transitions. [2022-04-18 16:32:26,911 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2022-04-18 16:32:26,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2040 transitions. [2022-04-18 16:32:26,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2040 transitions. [2022-04-18 16:32:26,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:26,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2040 transitions. [2022-04-18 16:32:26,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,917 INFO L186 Difference]: Start difference. First operand has 399 places, 400 transitions, 941 flow. Second operand 5 states and 2040 transitions. [2022-04-18 16:32:26,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 426 transitions, 1106 flow [2022-04-18 16:32:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 426 transitions, 1102 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:26,923 INFO L242 Difference]: Finished difference. Result has 404 places, 402 transitions, 962 flow [2022-04-18 16:32:26,923 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=962, PETRI_PLACES=404, PETRI_TRANSITIONS=402} [2022-04-18 16:32:26,923 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 2 predicate places. [2022-04-18 16:32:26,923 INFO L478 AbstractCegarLoop]: Abstraction has has 404 places, 402 transitions, 962 flow [2022-04-18 16:32:26,924 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.25) internal successors, (1593), 4 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:26,924 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:26,924 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:26,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 16:32:26,924 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash 352996643, now seen corresponding path program 1 times [2022-04-18 16:32:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:26,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671561728] [2022-04-18 16:32:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-18 16:32:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:27,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671561728] [2022-04-18 16:32:27,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671561728] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:32:27,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369829260] [2022-04-18 16:32:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:27,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:32:27,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:32:27,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:32:27,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 16:32:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:27,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-18 16:32:27,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:32:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-18 16:32:27,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:32:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-18 16:32:27,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369829260] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:32:27,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:32:27,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-04-18 16:32:27,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836086070] [2022-04-18 16:32:27,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:32:27,842 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-18 16:32:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-18 16:32:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-04-18 16:32:27,847 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 442 [2022-04-18 16:32:27,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 402 transitions, 962 flow. Second operand has 22 states, 22 states have (on average 386.8636363636364) internal successors, (8511), 22 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:27,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:27,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 442 [2022-04-18 16:32:27,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:28,266 INFO L129 PetriNetUnfolder]: 28/1208 cut-off events. [2022-04-18 16:32:28,266 INFO L130 PetriNetUnfolder]: For 51/59 co-relation queries the response was YES. [2022-04-18 16:32:28,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 1208 events. 28/1208 cut-off events. For 51/59 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4796 event pairs, 1 based on Foata normal form. 4/1100 useless extension candidates. Maximal degree in co-relation 1490. Up to 29 conditions per place. [2022-04-18 16:32:28,276 INFO L132 encePairwiseOnDemand]: 426/442 looper letters, 88 selfloop transitions, 34 changer transitions 0/470 dead transitions. [2022-04-18 16:32:28,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 470 transitions, 1398 flow [2022-04-18 16:32:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-18 16:32:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-04-18 16:32:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6620 transitions. [2022-04-18 16:32:28,287 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8810220920947565 [2022-04-18 16:32:28,287 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6620 transitions. [2022-04-18 16:32:28,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6620 transitions. [2022-04-18 16:32:28,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:28,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6620 transitions. [2022-04-18 16:32:28,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 389.4117647058824) internal successors, (6620), 17 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,306 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,306 INFO L186 Difference]: Start difference. First operand has 404 places, 402 transitions, 962 flow. Second operand 17 states and 6620 transitions. [2022-04-18 16:32:28,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 470 transitions, 1398 flow [2022-04-18 16:32:28,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 470 transitions, 1398 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:28,313 INFO L242 Difference]: Finished difference. Result has 423 places, 416 transitions, 1137 flow [2022-04-18 16:32:28,313 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1137, PETRI_PLACES=423, PETRI_TRANSITIONS=416} [2022-04-18 16:32:28,314 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 21 predicate places. [2022-04-18 16:32:28,314 INFO L478 AbstractCegarLoop]: Abstraction has has 423 places, 416 transitions, 1137 flow [2022-04-18 16:32:28,315 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 386.8636363636364) internal successors, (8511), 22 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,316 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:28,316 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:28,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-18 16:32:28,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:32:28,532 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1906497059, now seen corresponding path program 1 times [2022-04-18 16:32:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190678219] [2022-04-18 16:32:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:28,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:28,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190678219] [2022-04-18 16:32:28,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190678219] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:28,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:28,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046410651] [2022-04-18 16:32:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:28,590 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:28,592 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-04-18 16:32:28,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 416 transitions, 1137 flow. Second operand has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:28,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-04-18 16:32:28,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:28,768 INFO L129 PetriNetUnfolder]: 58/1396 cut-off events. [2022-04-18 16:32:28,768 INFO L130 PetriNetUnfolder]: For 88/131 co-relation queries the response was YES. [2022-04-18 16:32:28,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 1396 events. 58/1396 cut-off events. For 88/131 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6481 event pairs, 23 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 1805. Up to 127 conditions per place. [2022-04-18 16:32:28,779 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 24 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2022-04-18 16:32:28,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 416 transitions, 1190 flow [2022-04-18 16:32:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1207 transitions. [2022-04-18 16:32:28,781 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2022-04-18 16:32:28,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1207 transitions. [2022-04-18 16:32:28,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1207 transitions. [2022-04-18 16:32:28,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:28,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1207 transitions. [2022-04-18 16:32:28,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,786 INFO L186 Difference]: Start difference. First operand has 423 places, 416 transitions, 1137 flow. Second operand 3 states and 1207 transitions. [2022-04-18 16:32:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 416 transitions, 1190 flow [2022-04-18 16:32:28,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 416 transitions, 1145 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-04-18 16:32:28,792 INFO L242 Difference]: Finished difference. Result has 416 places, 415 transitions, 1094 flow [2022-04-18 16:32:28,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1094, PETRI_PLACES=416, PETRI_TRANSITIONS=415} [2022-04-18 16:32:28,793 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 14 predicate places. [2022-04-18 16:32:28,793 INFO L478 AbstractCegarLoop]: Abstraction has has 416 places, 415 transitions, 1094 flow [2022-04-18 16:32:28,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,793 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:28,793 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:28,794 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 16:32:28,794 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1801497057, now seen corresponding path program 2 times [2022-04-18 16:32:28,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:28,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177204547] [2022-04-18 16:32:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177204547] [2022-04-18 16:32:28,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177204547] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:28,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:28,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688888796] [2022-04-18 16:32:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:28,954 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:28,958 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-04-18 16:32:28,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 415 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 365.5) internal successors, (2193), 6 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:28,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:28,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-04-18 16:32:28,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:32,623 INFO L129 PetriNetUnfolder]: 6486/23527 cut-off events. [2022-04-18 16:32:32,623 INFO L130 PetriNetUnfolder]: For 1085/1100 co-relation queries the response was YES. [2022-04-18 16:32:32,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36365 conditions, 23527 events. 6486/23527 cut-off events. For 1085/1100 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 250202 event pairs, 1987 based on Foata normal form. 0/21135 useless extension candidates. Maximal degree in co-relation 36347. Up to 5130 conditions per place. [2022-04-18 16:32:32,804 INFO L132 encePairwiseOnDemand]: 436/442 looper letters, 130 selfloop transitions, 6 changer transitions 0/490 dead transitions. [2022-04-18 16:32:32,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 490 transitions, 1524 flow [2022-04-18 16:32:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:32:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:32:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2307 transitions. [2022-04-18 16:32:32,808 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8699095022624435 [2022-04-18 16:32:32,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2307 transitions. [2022-04-18 16:32:32,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2307 transitions. [2022-04-18 16:32:32,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:32,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2307 transitions. [2022-04-18 16:32:32,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 384.5) internal successors, (2307), 6 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:32,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:32,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:32,814 INFO L186 Difference]: Start difference. First operand has 416 places, 415 transitions, 1094 flow. Second operand 6 states and 2307 transitions. [2022-04-18 16:32:32,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 490 transitions, 1524 flow [2022-04-18 16:32:32,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 1520 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:32,832 INFO L242 Difference]: Finished difference. Result has 418 places, 414 transitions, 1100 flow [2022-04-18 16:32:32,832 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1100, PETRI_PLACES=418, PETRI_TRANSITIONS=414} [2022-04-18 16:32:32,832 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 16 predicate places. [2022-04-18 16:32:32,832 INFO L478 AbstractCegarLoop]: Abstraction has has 418 places, 414 transitions, 1100 flow [2022-04-18 16:32:32,833 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.5) internal successors, (2193), 6 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:32,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:32,833 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:32,833 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 16:32:32,833 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:32,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 532354056, now seen corresponding path program 1 times [2022-04-18 16:32:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:32,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178392046] [2022-04-18 16:32:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178392046] [2022-04-18 16:32:32,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178392046] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:32,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:32,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683952954] [2022-04-18 16:32:32,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:32,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:32,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:32,891 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 442 [2022-04-18 16:32:32,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 414 transitions, 1100 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:32,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:32,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 442 [2022-04-18 16:32:32,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:33,166 INFO L129 PetriNetUnfolder]: 62/1784 cut-off events. [2022-04-18 16:32:33,166 INFO L130 PetriNetUnfolder]: For 96/97 co-relation queries the response was YES. [2022-04-18 16:32:33,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 1784 events. 62/1784 cut-off events. For 96/97 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9871 event pairs, 7 based on Foata normal form. 0/1639 useless extension candidates. Maximal degree in co-relation 2140. Up to 76 conditions per place. [2022-04-18 16:32:33,175 INFO L132 encePairwiseOnDemand]: 438/442 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-04-18 16:32:33,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 417 transitions, 1139 flow [2022-04-18 16:32:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2022-04-18 16:32:33,177 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.942684766214178 [2022-04-18 16:32:33,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2022-04-18 16:32:33,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2022-04-18 16:32:33,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:33,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2022-04-18 16:32:33,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,181 INFO L186 Difference]: Start difference. First operand has 418 places, 414 transitions, 1100 flow. Second operand 3 states and 1250 transitions. [2022-04-18 16:32:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 417 transitions, 1139 flow [2022-04-18 16:32:33,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 417 transitions, 1127 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:32:33,187 INFO L242 Difference]: Finished difference. Result has 414 places, 414 transitions, 1098 flow [2022-04-18 16:32:33,187 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1098, PETRI_PLACES=414, PETRI_TRANSITIONS=414} [2022-04-18 16:32:33,188 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 12 predicate places. [2022-04-18 16:32:33,188 INFO L478 AbstractCegarLoop]: Abstraction has has 414 places, 414 transitions, 1098 flow [2022-04-18 16:32:33,188 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,188 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:33,189 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:33,189 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-18 16:32:33,189 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -676924094, now seen corresponding path program 1 times [2022-04-18 16:32:33,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523436127] [2022-04-18 16:32:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:33,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:33,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523436127] [2022-04-18 16:32:33,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523436127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:33,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:33,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:33,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490458235] [2022-04-18 16:32:33,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:33,250 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:33,252 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 442 [2022-04-18 16:32:33,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 414 transitions, 1098 flow. Second operand has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:33,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 442 [2022-04-18 16:32:33,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:33,552 INFO L129 PetriNetUnfolder]: 105/2054 cut-off events. [2022-04-18 16:32:33,552 INFO L130 PetriNetUnfolder]: For 125/128 co-relation queries the response was YES. [2022-04-18 16:32:33,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 2054 events. 105/2054 cut-off events. For 125/128 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12557 event pairs, 32 based on Foata normal form. 4/1878 useless extension candidates. Maximal degree in co-relation 2507. Up to 121 conditions per place. [2022-04-18 16:32:33,587 INFO L132 encePairwiseOnDemand]: 430/442 looper letters, 15 selfloop transitions, 4 changer transitions 39/415 dead transitions. [2022-04-18 16:32:33,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 415 transitions, 1155 flow [2022-04-18 16:32:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1220 transitions. [2022-04-18 16:32:33,589 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9200603318250377 [2022-04-18 16:32:33,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1220 transitions. [2022-04-18 16:32:33,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1220 transitions. [2022-04-18 16:32:33,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:33,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1220 transitions. [2022-04-18 16:32:33,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,607 INFO L186 Difference]: Start difference. First operand has 414 places, 414 transitions, 1098 flow. Second operand 3 states and 1220 transitions. [2022-04-18 16:32:33,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 415 transitions, 1155 flow [2022-04-18 16:32:33,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 415 transitions, 1155 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:33,613 INFO L242 Difference]: Finished difference. Result has 413 places, 375 transitions, 1039 flow [2022-04-18 16:32:33,614 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1039, PETRI_PLACES=413, PETRI_TRANSITIONS=375} [2022-04-18 16:32:33,614 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, 11 predicate places. [2022-04-18 16:32:33,614 INFO L478 AbstractCegarLoop]: Abstraction has has 413 places, 375 transitions, 1039 flow [2022-04-18 16:32:33,614 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.0) internal successors, (1194), 3 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:33,615 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:33,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-18 16:32:33,615 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:33,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1343491252, now seen corresponding path program 1 times [2022-04-18 16:32:33,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:33,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954157984] [2022-04-18 16:32:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:33,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:33,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954157984] [2022-04-18 16:32:33,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954157984] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:33,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:33,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-18 16:32:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78224085] [2022-04-18 16:32:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:33,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-18 16:32:33,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-18 16:32:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-18 16:32:33,679 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 442 [2022-04-18 16:32:33,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 375 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 398.5) internal successors, (1594), 4 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:33,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:33,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 442 [2022-04-18 16:32:33,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:34,078 INFO L129 PetriNetUnfolder]: 154/2139 cut-off events. [2022-04-18 16:32:34,080 INFO L130 PetriNetUnfolder]: For 241/244 co-relation queries the response was YES. [2022-04-18 16:32:34,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 2139 events. 154/2139 cut-off events. For 241/244 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 15079 event pairs, 100 based on Foata normal form. 0/1897 useless extension candidates. Maximal degree in co-relation 2898. Up to 219 conditions per place. [2022-04-18 16:32:34,092 INFO L132 encePairwiseOnDemand]: 437/442 looper letters, 45 selfloop transitions, 4 changer transitions 0/397 dead transitions. [2022-04-18 16:32:34,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 397 transitions, 1182 flow [2022-04-18 16:32:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-18 16:32:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-04-18 16:32:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2035 transitions. [2022-04-18 16:32:34,098 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.920814479638009 [2022-04-18 16:32:34,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2035 transitions. [2022-04-18 16:32:34,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2035 transitions. [2022-04-18 16:32:34,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:34,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2035 transitions. [2022-04-18 16:32:34,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,123 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,123 INFO L186 Difference]: Start difference. First operand has 413 places, 375 transitions, 1039 flow. Second operand 5 states and 2035 transitions. [2022-04-18 16:32:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 397 transitions, 1182 flow [2022-04-18 16:32:34,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 1174 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:34,129 INFO L242 Difference]: Finished difference. Result has 383 places, 377 transitions, 1056 flow [2022-04-18 16:32:34,135 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1056, PETRI_PLACES=383, PETRI_TRANSITIONS=377} [2022-04-18 16:32:34,136 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -19 predicate places. [2022-04-18 16:32:34,136 INFO L478 AbstractCegarLoop]: Abstraction has has 383 places, 377 transitions, 1056 flow [2022-04-18 16:32:34,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 398.5) internal successors, (1594), 4 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:34,139 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:34,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-18 16:32:34,139 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash -969920209, now seen corresponding path program 1 times [2022-04-18 16:32:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:34,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155166128] [2022-04-18 16:32:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:34,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:34,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155166128] [2022-04-18 16:32:34,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155166128] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:34,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:34,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:32:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9278266] [2022-04-18 16:32:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:34,192 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:32:34,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:32:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:32:34,194 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 442 [2022-04-18 16:32:34,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 377 transitions, 1056 flow. Second operand has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:34,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 442 [2022-04-18 16:32:34,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:34,440 INFO L129 PetriNetUnfolder]: 112/1887 cut-off events. [2022-04-18 16:32:34,441 INFO L130 PetriNetUnfolder]: For 206/209 co-relation queries the response was YES. [2022-04-18 16:32:34,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 1887 events. 112/1887 cut-off events. For 206/209 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13242 event pairs, 73 based on Foata normal form. 0/1730 useless extension candidates. Maximal degree in co-relation 2539. Up to 221 conditions per place. [2022-04-18 16:32:34,454 INFO L132 encePairwiseOnDemand]: 439/442 looper letters, 17 selfloop transitions, 2 changer transitions 0/377 dead transitions. [2022-04-18 16:32:34,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 377 transitions, 1095 flow [2022-04-18 16:32:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:32:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:32:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2022-04-18 16:32:34,456 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9049773755656109 [2022-04-18 16:32:34,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2022-04-18 16:32:34,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2022-04-18 16:32:34,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:34,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2022-04-18 16:32:34,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,459 INFO L186 Difference]: Start difference. First operand has 383 places, 377 transitions, 1056 flow. Second operand 3 states and 1200 transitions. [2022-04-18 16:32:34,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 377 transitions, 1095 flow [2022-04-18 16:32:34,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 377 transitions, 1095 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:32:34,465 INFO L242 Difference]: Finished difference. Result has 384 places, 376 transitions, 1058 flow [2022-04-18 16:32:34,466 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=384, PETRI_TRANSITIONS=376} [2022-04-18 16:32:34,466 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -18 predicate places. [2022-04-18 16:32:34,466 INFO L478 AbstractCegarLoop]: Abstraction has has 384 places, 376 transitions, 1058 flow [2022-04-18 16:32:34,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.0) internal successors, (1191), 3 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:34,467 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:34,467 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-18 16:32:34,467 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:34,467 INFO L85 PathProgramCache]: Analyzing trace with hash -864920207, now seen corresponding path program 1 times [2022-04-18 16:32:34,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:34,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490064980] [2022-04-18 16:32:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:34,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:34,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:34,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490064980] [2022-04-18 16:32:34,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490064980] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:34,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:34,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620727047] [2022-04-18 16:32:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:34,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:34,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:34,568 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-04-18 16:32:34,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 376 transitions, 1058 flow. Second operand has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:34,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:34,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-04-18 16:32:34,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:41,767 INFO L129 PetriNetUnfolder]: 11016/42248 cut-off events. [2022-04-18 16:32:41,767 INFO L130 PetriNetUnfolder]: For 1813/1906 co-relation queries the response was YES. [2022-04-18 16:32:42,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66008 conditions, 42248 events. 11016/42248 cut-off events. For 1813/1906 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 478874 event pairs, 2870 based on Foata normal form. 4/39600 useless extension candidates. Maximal degree in co-relation 65985. Up to 9814 conditions per place. [2022-04-18 16:32:42,144 INFO L132 encePairwiseOnDemand]: 436/442 looper letters, 148 selfloop transitions, 6 changer transitions 0/471 dead transitions. [2022-04-18 16:32:42,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 471 transitions, 1564 flow [2022-04-18 16:32:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:32:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:32:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2325 transitions. [2022-04-18 16:32:42,147 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8766968325791855 [2022-04-18 16:32:42,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2325 transitions. [2022-04-18 16:32:42,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2325 transitions. [2022-04-18 16:32:42,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:42,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2325 transitions. [2022-04-18 16:32:42,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 387.5) internal successors, (2325), 6 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:42,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:42,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:42,156 INFO L186 Difference]: Start difference. First operand has 384 places, 376 transitions, 1058 flow. Second operand 6 states and 2325 transitions. [2022-04-18 16:32:42,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 471 transitions, 1564 flow [2022-04-18 16:32:42,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 471 transitions, 1560 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:32:42,186 INFO L242 Difference]: Finished difference. Result has 386 places, 375 transitions, 1064 flow [2022-04-18 16:32:42,187 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1064, PETRI_PLACES=386, PETRI_TRANSITIONS=375} [2022-04-18 16:32:42,187 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -16 predicate places. [2022-04-18 16:32:42,187 INFO L478 AbstractCegarLoop]: Abstraction has has 386 places, 375 transitions, 1064 flow [2022-04-18 16:32:42,188 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:42,188 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:42,188 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:42,188 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-18 16:32:42,188 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1063313254, now seen corresponding path program 1 times [2022-04-18 16:32:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:42,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950263500] [2022-04-18 16:32:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:42,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950263500] [2022-04-18 16:32:42,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950263500] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:42,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:42,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622943315] [2022-04-18 16:32:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:42,283 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:42,285 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-04-18 16:32:42,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 375 transitions, 1064 flow. Second operand has 6 states, 6 states have (on average 366.5) internal successors, (2199), 6 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:42,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:42,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-04-18 16:32:42,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:50,357 INFO L129 PetriNetUnfolder]: 10526/47120 cut-off events. [2022-04-18 16:32:50,357 INFO L130 PetriNetUnfolder]: For 3122/3122 co-relation queries the response was YES. [2022-04-18 16:32:50,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72250 conditions, 47120 events. 10526/47120 cut-off events. For 3122/3122 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 571324 event pairs, 6692 based on Foata normal form. 0/44479 useless extension candidates. Maximal degree in co-relation 72227. Up to 11081 conditions per place. [2022-04-18 16:32:50,827 INFO L132 encePairwiseOnDemand]: 436/442 looper letters, 123 selfloop transitions, 6 changer transitions 0/446 dead transitions. [2022-04-18 16:32:50,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 446 transitions, 1504 flow [2022-04-18 16:32:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:32:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:32:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2300 transitions. [2022-04-18 16:32:50,829 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8672699849170438 [2022-04-18 16:32:50,830 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2300 transitions. [2022-04-18 16:32:50,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2300 transitions. [2022-04-18 16:32:50,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:50,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2300 transitions. [2022-04-18 16:32:50,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 383.3333333333333) internal successors, (2300), 6 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:50,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:50,834 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:50,834 INFO L186 Difference]: Start difference. First operand has 386 places, 375 transitions, 1064 flow. Second operand 6 states and 2300 transitions. [2022-04-18 16:32:50,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 446 transitions, 1504 flow [2022-04-18 16:32:50,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 446 transitions, 1460 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:32:50,851 INFO L242 Difference]: Finished difference. Result has 385 places, 374 transitions, 1062 flow [2022-04-18 16:32:50,852 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1062, PETRI_PLACES=385, PETRI_TRANSITIONS=374} [2022-04-18 16:32:50,852 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -17 predicate places. [2022-04-18 16:32:50,852 INFO L478 AbstractCegarLoop]: Abstraction has has 385 places, 374 transitions, 1062 flow [2022-04-18 16:32:50,853 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 366.5) internal successors, (2199), 6 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:50,853 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:50,853 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:50,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-18 16:32:50,853 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash 453138488, now seen corresponding path program 1 times [2022-04-18 16:32:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:50,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103419778] [2022-04-18 16:32:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103419778] [2022-04-18 16:32:51,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103419778] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:51,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:51,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668522792] [2022-04-18 16:32:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:51,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:51,087 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 442 [2022-04-18 16:32:51,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 374 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 366.6666666666667) internal successors, (2200), 6 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:51,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:51,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 442 [2022-04-18 16:32:51,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:32:59,259 INFO L129 PetriNetUnfolder]: 9813/47202 cut-off events. [2022-04-18 16:32:59,260 INFO L130 PetriNetUnfolder]: For 3120/3213 co-relation queries the response was YES. [2022-04-18 16:32:59,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71635 conditions, 47202 events. 9813/47202 cut-off events. For 3120/3213 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 583687 event pairs, 6084 based on Foata normal form. 0/45118 useless extension candidates. Maximal degree in co-relation 71612. Up to 10123 conditions per place. [2022-04-18 16:32:59,714 INFO L132 encePairwiseOnDemand]: 436/442 looper letters, 142 selfloop transitions, 6 changer transitions 0/465 dead transitions. [2022-04-18 16:32:59,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 465 transitions, 1580 flow [2022-04-18 16:32:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:32:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:32:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2319 transitions. [2022-04-18 16:32:59,716 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8744343891402715 [2022-04-18 16:32:59,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2319 transitions. [2022-04-18 16:32:59,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2319 transitions. [2022-04-18 16:32:59,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:32:59,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2319 transitions. [2022-04-18 16:32:59,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 386.5) internal successors, (2319), 6 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,728 INFO L186 Difference]: Start difference. First operand has 385 places, 374 transitions, 1062 flow. Second operand 6 states and 2319 transitions. [2022-04-18 16:32:59,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 465 transitions, 1580 flow [2022-04-18 16:32:59,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 465 transitions, 1536 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:32:59,749 INFO L242 Difference]: Finished difference. Result has 384 places, 373 transitions, 1060 flow [2022-04-18 16:32:59,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1060, PETRI_PLACES=384, PETRI_TRANSITIONS=373} [2022-04-18 16:32:59,755 INFO L335 CegarLoopForPetriNet]: 402 programPoint places, -18 predicate places. [2022-04-18 16:32:59,756 INFO L478 AbstractCegarLoop]: Abstraction has has 384 places, 373 transitions, 1060 flow [2022-04-18 16:32:59,756 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 366.6666666666667) internal successors, (2200), 6 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,756 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:32:59,756 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:59,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-18 16:32:59,757 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2022-04-18 16:32:59,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:32:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1981281832, now seen corresponding path program 1 times [2022-04-18 16:32:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:32:59,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569927216] [2022-04-18 16:32:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:32:59,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:32:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:32:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-04-18 16:32:59,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:32:59,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569927216] [2022-04-18 16:32:59,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569927216] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:32:59,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:32:59,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:32:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132935284] [2022-04-18 16:32:59,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:32:59,922 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:32:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:32:59,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:32:59,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:32:59,923 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 442 [2022-04-18 16:32:59,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 373 transitions, 1060 flow. Second operand has 6 states, 6 states have (on average 370.5) internal successors, (2223), 6 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:32:59,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:32:59,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 442 [2022-04-18 16:32:59,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand