./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:30:54,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:30:54,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:30:54,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:30:54,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:30:54,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:30:54,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:30:54,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:30:54,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:30:54,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:30:54,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:30:54,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:30:54,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:30:54,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:30:54,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:30:54,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:30:54,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:30:54,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:30:54,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:30:54,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:30:54,154 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:30:54,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:30:54,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:30:54,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:30:54,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:30:54,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:30:54,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:30:54,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:30:54,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:30:54,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:30:54,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:30:54,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:30:54,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:30:54,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:30:54,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:30:54,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:30:54,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:30:54,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:30:54,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:30:54,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:30:54,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:30:54,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:30:54,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:30:54,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:30:54,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:30:54,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:30:54,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:30:54,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:30:54,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:30:54,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:30:54,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:30:54,202 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:30:54,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:30:54,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:30:54,203 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:30:54,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:30:54,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:30:54,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:30:54,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:30:54,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:30:54,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:30:54,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:30:54,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:30:54,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:30:54,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:30:54,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:30:54,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:30:54,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:30:54,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:30:54,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:30:54,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:30:54,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:30:54,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:30:54,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2022-04-18 16:30:54,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:30:54,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:30:54,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:30:54,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:30:54,408 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:30:54,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i [2022-04-18 16:30:54,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ad480d/588ec5305576449eb844e903c187c5f2/FLAG4317617e1 [2022-04-18 16:30:54,916 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:30:54,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i [2022-04-18 16:30:54,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ad480d/588ec5305576449eb844e903c187c5f2/FLAG4317617e1 [2022-04-18 16:30:54,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/804ad480d/588ec5305576449eb844e903c187c5f2 [2022-04-18 16:30:54,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:30:54,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:30:54,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:30:54,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:30:54,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:30:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:30:54" (1/1) ... [2022-04-18 16:30:54,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b4a0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:54, skipping insertion in model container [2022-04-18 16:30:54,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:30:54" (1/1) ... [2022-04-18 16:30:54,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:30:54,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:30:55,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43266,43279] [2022-04-18 16:30:55,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43543,43556] [2022-04-18 16:30:55,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:30:55,341 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:30:55,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43266,43279] [2022-04-18 16:30:55,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i[43543,43556] [2022-04-18 16:30:55,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:30:55,469 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:30:55,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55 WrapperNode [2022-04-18 16:30:55,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:30:55,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:30:55,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:30:55,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:30:55,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,544 INFO L137 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 389 [2022-04-18 16:30:55,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:30:55,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:30:55,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:30:55,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:30:55,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:30:55,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:30:55,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:30:55,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:30:55,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (1/1) ... [2022-04-18 16:30:55,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:30:55,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:55,631 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 16:30:55,650 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 16:30:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-04-18 16:30:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-04-18 16:30:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-04-18 16:30:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-04-18 16:30:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:30:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:30:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:30:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:30:55,669 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 16:30:55,806 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:30:55,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:30:56,247 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:30:56,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:30:56,261 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 16:30:56,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:30:56 BoogieIcfgContainer [2022-04-18 16:30:56,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:30:56,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:30:56,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:30:56,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:30:56,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:30:54" (1/3) ... [2022-04-18 16:30:56,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d86ecc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:30:56, skipping insertion in model container [2022-04-18 16:30:56,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:55" (2/3) ... [2022-04-18 16:30:56,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d86ecc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:30:56, skipping insertion in model container [2022-04-18 16:30:56,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:30:56" (3/3) ... [2022-04-18 16:30:56,270 INFO L111 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2022-04-18 16:30:56,276 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:30:56,276 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:30:56,276 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-04-18 16:30:56,276 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:30:56,389 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 16:30:56,425 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:30:56,430 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 16:30:56,430 INFO L341 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-04-18 16:30:56,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 443 places, 449 transitions, 914 flow [2022-04-18 16:30:56,590 INFO L129 PetriNetUnfolder]: 13/447 cut-off events. [2022-04-18 16:30:56,591 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 16:30:56,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 447 events. 13/447 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 794 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-04-18 16:30:56,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 449 transitions, 914 flow [2022-04-18 16:30:56,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 437 transitions, 883 flow [2022-04-18 16:30:56,620 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2022-04-18 16:30:56,621 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:30:56,621 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:56,622 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:56,623 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-04-18 16:30:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1541684088, now seen corresponding path program 1 times [2022-04-18 16:30:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778013043] [2022-04-18 16:30:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:56,816 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 16:30:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778013043] [2022-04-18 16:30:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778013043] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:56,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:30:56,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:30:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428521060] [2022-04-18 16:30:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:56,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:30:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:30:56,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:30:56,870 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 449 [2022-04-18 16:30:56,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 437 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:56,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:56,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 449 [2022-04-18 16:30:56,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:57,066 INFO L129 PetriNetUnfolder]: 47/919 cut-off events. [2022-04-18 16:30:57,066 INFO L130 PetriNetUnfolder]: For 25/30 co-relation queries the response was YES. [2022-04-18 16:30:57,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 919 events. 47/919 cut-off events. For 25/30 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3974 event pairs, 27 based on Foata normal form. 9/812 useless extension candidates. Maximal degree in co-relation 852. Up to 70 conditions per place. [2022-04-18 16:30:57,077 INFO L132 encePairwiseOnDemand]: 442/449 looper letters, 15 selfloop transitions, 2 changer transitions 0/428 dead transitions. [2022-04-18 16:30:57,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 428 transitions, 899 flow [2022-04-18 16:30:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:30:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:30:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1291 transitions. [2022-04-18 16:30:57,097 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9584261321455085 [2022-04-18 16:30:57,098 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1291 transitions. [2022-04-18 16:30:57,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1291 transitions. [2022-04-18 16:30:57,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:57,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1291 transitions. [2022-04-18 16:30:57,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,121 INFO L186 Difference]: Start difference. First operand has 431 places, 437 transitions, 883 flow. Second operand 3 states and 1291 transitions. [2022-04-18 16:30:57,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 428 transitions, 899 flow [2022-04-18 16:30:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 428 transitions, 894 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-04-18 16:30:57,139 INFO L242 Difference]: Finished difference. Result has 425 places, 428 transitions, 864 flow [2022-04-18 16:30:57,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=425, PETRI_TRANSITIONS=428} [2022-04-18 16:30:57,144 INFO L335 CegarLoopForPetriNet]: 431 programPoint places, -6 predicate places. [2022-04-18 16:30:57,144 INFO L478 AbstractCegarLoop]: Abstraction has has 425 places, 428 transitions, 864 flow [2022-04-18 16:30:57,145 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,145 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:57,145 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] [2022-04-18 16:30:57,146 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:30:57,146 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-04-18 16:30:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1205553850, now seen corresponding path program 1 times [2022-04-18 16:30:57,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:57,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064962547] [2022-04-18 16:30:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:57,204 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 16:30:57,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:57,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064962547] [2022-04-18 16:30:57,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064962547] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:57,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:30:57,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:30:57,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137446973] [2022-04-18 16:30:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:57,206 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:30:57,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:30:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:30:57,209 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 449 [2022-04-18 16:30:57,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 428 transitions, 864 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:57,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 449 [2022-04-18 16:30:57,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:57,331 INFO L129 PetriNetUnfolder]: 53/847 cut-off events. [2022-04-18 16:30:57,332 INFO L130 PetriNetUnfolder]: For 14/25 co-relation queries the response was YES. [2022-04-18 16:30:57,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 847 events. 53/847 cut-off events. For 14/25 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3350 event pairs, 27 based on Foata normal form. 0/737 useless extension candidates. Maximal degree in co-relation 897. Up to 77 conditions per place. [2022-04-18 16:30:57,340 INFO L132 encePairwiseOnDemand]: 446/449 looper letters, 15 selfloop transitions, 2 changer transitions 0/427 dead transitions. [2022-04-18 16:30:57,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 427 transitions, 896 flow [2022-04-18 16:30:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:30:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:30:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-04-18 16:30:57,343 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.955456570155902 [2022-04-18 16:30:57,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-04-18 16:30:57,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-04-18 16:30:57,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:57,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-04-18 16:30:57,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,349 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,349 INFO L186 Difference]: Start difference. First operand has 425 places, 428 transitions, 864 flow. Second operand 3 states and 1287 transitions. [2022-04-18 16:30:57,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 427 transitions, 896 flow [2022-04-18 16:30:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 427 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:30:57,355 INFO L242 Difference]: Finished difference. Result has 424 places, 427 transitions, 862 flow [2022-04-18 16:30:57,356 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=862, PETRI_PLACES=424, PETRI_TRANSITIONS=427} [2022-04-18 16:30:57,356 INFO L335 CegarLoopForPetriNet]: 431 programPoint places, -7 predicate places. [2022-04-18 16:30:57,357 INFO L478 AbstractCegarLoop]: Abstraction has has 424 places, 427 transitions, 862 flow [2022-04-18 16:30:57,358 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:57,358 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:57,358 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:30:57,358 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-04-18 16:30:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash -690922228, now seen corresponding path program 1 times [2022-04-18 16:30:57,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:57,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878681960] [2022-04-18 16:30:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:57,522 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 16:30:57,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878681960] [2022-04-18 16:30:57,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878681960] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:57,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:30:57,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:30:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673211299] [2022-04-18 16:30:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:57,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:30:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:30:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:30:57,527 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 449 [2022-04-18 16:30:57,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 427 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:57,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:57,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 449 [2022-04-18 16:30:57,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:31:11,757 INFO L129 PetriNetUnfolder]: 49858/114806 cut-off events. [2022-04-18 16:31:11,757 INFO L130 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-04-18 16:31:11,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190340 conditions, 114806 events. 49858/114806 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 1233917 event pairs, 47568 based on Foata normal form. 0/98659 useless extension candidates. Maximal degree in co-relation 190294. Up to 75414 conditions per place. [2022-04-18 16:31:12,431 INFO L132 encePairwiseOnDemand]: 443/449 looper letters, 166 selfloop transitions, 5 changer transitions 0/426 dead transitions. [2022-04-18 16:31:12,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 426 transitions, 1202 flow [2022-04-18 16:31:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:31:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:31:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1786 transitions. [2022-04-18 16:31:12,436 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6629547141796585 [2022-04-18 16:31:12,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1786 transitions. [2022-04-18 16:31:12,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1786 transitions. [2022-04-18 16:31:12,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:31:12,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1786 transitions. [2022-04-18 16:31:12,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.6666666666667) internal successors, (1786), 6 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:12,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:12,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:12,445 INFO L186 Difference]: Start difference. First operand has 424 places, 427 transitions, 862 flow. Second operand 6 states and 1786 transitions. [2022-04-18 16:31:12,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 426 transitions, 1202 flow [2022-04-18 16:31:12,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 426 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:31:12,452 INFO L242 Difference]: Finished difference. Result has 426 places, 426 transitions, 866 flow [2022-04-18 16:31:12,452 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=866, PETRI_PLACES=426, PETRI_TRANSITIONS=426} [2022-04-18 16:31:12,454 INFO L335 CegarLoopForPetriNet]: 431 programPoint places, -5 predicate places. [2022-04-18 16:31:12,454 INFO L478 AbstractCegarLoop]: Abstraction has has 426 places, 426 transitions, 866 flow [2022-04-18 16:31:12,455 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:12,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:31:12,456 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] [2022-04-18 16:31:12,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:31:12,456 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-04-18 16:31:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:31:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash 177020895, now seen corresponding path program 1 times [2022-04-18 16:31:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:31:12,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662415661] [2022-04-18 16:31:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:31:12,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:31:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:31:12,566 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 16:31:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:31:12,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662415661] [2022-04-18 16:31:12,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662415661] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:31:12,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:31:12,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:31:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514548763] [2022-04-18 16:31:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:31:12,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:31:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:31:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:31:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:31:12,573 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 449 [2022-04-18 16:31:12,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 426 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:12,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:31:12,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 449 [2022-04-18 16:31:12,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:31:26,374 INFO L129 PetriNetUnfolder]: 49858/114805 cut-off events. [2022-04-18 16:31:26,375 INFO L130 PetriNetUnfolder]: For 133/133 co-relation queries the response was YES. [2022-04-18 16:31:26,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190341 conditions, 114805 events. 49858/114805 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 1233918 event pairs, 47568 based on Foata normal form. 0/98659 useless extension candidates. Maximal degree in co-relation 190272. Up to 75413 conditions per place. [2022-04-18 16:31:26,989 INFO L132 encePairwiseOnDemand]: 443/449 looper letters, 165 selfloop transitions, 5 changer transitions 0/425 dead transitions. [2022-04-18 16:31:26,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 425 transitions, 1204 flow [2022-04-18 16:31:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:31:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:31:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1785 transitions. [2022-04-18 16:31:26,993 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6625835189309577 [2022-04-18 16:31:26,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1785 transitions. [2022-04-18 16:31:26,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1785 transitions. [2022-04-18 16:31:26,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:31:26,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1785 transitions. [2022-04-18 16:31:26,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.5) internal successors, (1785), 6 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:27,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:27,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:27,003 INFO L186 Difference]: Start difference. First operand has 426 places, 426 transitions, 866 flow. Second operand 6 states and 1785 transitions. [2022-04-18 16:31:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 425 transitions, 1204 flow [2022-04-18 16:31:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 425 transitions, 1194 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:31:27,010 INFO L242 Difference]: Finished difference. Result has 425 places, 425 transitions, 864 flow [2022-04-18 16:31:27,015 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=864, PETRI_PLACES=425, PETRI_TRANSITIONS=425} [2022-04-18 16:31:27,017 INFO L335 CegarLoopForPetriNet]: 431 programPoint places, -6 predicate places. [2022-04-18 16:31:27,017 INFO L478 AbstractCegarLoop]: Abstraction has has 425 places, 425 transitions, 864 flow [2022-04-18 16:31:27,018 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:27,018 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:31:27,018 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:31:27,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:31:27,018 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-04-18 16:31:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:31:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -606686713, now seen corresponding path program 1 times [2022-04-18 16:31:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:31:27,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398383973] [2022-04-18 16:31:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:31:27,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:31:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:31:27,131 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 16:31:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:31:27,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398383973] [2022-04-18 16:31:27,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398383973] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:31:27,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:31:27,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:31:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686521774] [2022-04-18 16:31:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:31:27,133 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:31:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:31:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:31:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:31:27,135 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 449 [2022-04-18 16:31:27,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 425 transitions, 864 flow. Second operand has 6 states, 6 states have (on average 272.5) internal successors, (1635), 6 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:27,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:31:27,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 449 [2022-04-18 16:31:27,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand