./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/06_ticket.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/06_ticket.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:52,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:53,091 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:57:53,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:53,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:53,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:53,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:53,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:53,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:53,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:53,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:53,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:53,155 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:53,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:53,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:53,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:53,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:53,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:53,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:53,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:53,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:53,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:53,162 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:57:53,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:53,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:53,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:53,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:53,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:53,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:53,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:53,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:53,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:53,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:53,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:53,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:53,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:53,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:53,169 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:53,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:53,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:53,170 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:53,170 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2023-11-19 07:57:53,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:53,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:53,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:53,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:53,546 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:53,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/06_ticket.i [2023-11-19 07:57:56,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:57,035 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:57,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/sv-benchmarks/c/pthread-ext/06_ticket.i [2023-11-19 07:57:57,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/data/dd84e6be7/913b3676c3a444ea8d6ff5ea7bbb38d4/FLAG6cbe5a089 [2023-11-19 07:57:57,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/data/dd84e6be7/913b3676c3a444ea8d6ff5ea7bbb38d4 [2023-11-19 07:57:57,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:57,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:57,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:57,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:57,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:57,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4030ab53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57, skipping insertion in model container [2023-11-19 07:57:57,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:57,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:57,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:57,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:57,628 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:57,628 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:57,636 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:57,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57 WrapperNode [2023-11-19 07:57:57,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:57,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:57,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:57,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:57,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,687 INFO L138 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-11-19 07:57:57,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:57,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:57,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:57,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:57,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:57,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:57,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:57,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:57,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (1/1) ... [2023-11-19 07:57:57,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:57,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:57,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:57,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f705a6-29e8-4653-995a-691e94efaf56/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:57,833 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:57:57,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:57:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:57:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:57,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:57:57,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:57,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:57,837 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:58,023 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:58,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:58,264 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:58,382 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:58,383 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:57:58,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:58 BoogieIcfgContainer [2023-11-19 07:57:58,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:58,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:58,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:58,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:58,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:57" (1/3) ... [2023-11-19 07:57:58,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ef19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:58, skipping insertion in model container [2023-11-19 07:57:58,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:57" (2/3) ... [2023-11-19 07:57:58,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ef19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:58, skipping insertion in model container [2023-11-19 07:57:58,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:58" (3/3) ... [2023-11-19 07:57:58,397 INFO L112 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2023-11-19 07:57:58,407 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:58,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:58,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 07:57:58,419 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:58,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:57:58,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,654 INFO L124 PetriNetUnfolderBase]: 10/123 cut-off events. [2023-11-19 07:57:58,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 10/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 98. Up to 4 conditions per place. [2023-11-19 07:57:58,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:58,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 112 transitions, 228 flow [2023-11-19 07:57:58,719 INFO L124 PetriNetUnfolderBase]: 10/123 cut-off events. [2023-11-19 07:57:58,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:58,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 10/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 98. Up to 4 conditions per place. [2023-11-19 07:57:58,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 2380 [2023-11-19 07:58:01,542 INFO L134 LiptonReduction]: Checked pairs total: 2296 [2023-11-19 07:58:01,543 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-11-19 07:58:01,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:01,565 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4151f0c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:01,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:58:01,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:01,569 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:58:01,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:01,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:01,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:01,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-11-19 07:58:01,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash 16605542, now seen corresponding path program 1 times [2023-11-19 07:58:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:01,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490513143] [2023-11-19 07:58:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490513143] [2023-11-19 07:58:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490513143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:01,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:01,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130286549] [2023-11-19 07:58:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:01,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 248 [2023-11-19 07:58:01,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:01,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 248 [2023-11-19 07:58:01,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:01,847 INFO L124 PetriNetUnfolderBase]: 9/25 cut-off events. [2023-11-19 07:58:01,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:01,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 25 events. 9/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 6 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 40. Up to 24 conditions per place. [2023-11-19 07:58:01,849 INFO L140 encePairwiseOnDemand]: 233/248 looper letters, 8 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-11-19 07:58:01,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 9 transitions, 38 flow [2023-11-19 07:58:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2023-11-19 07:58:01,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334677419354839 [2023-11-19 07:58:01,866 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 215 transitions. [2023-11-19 07:58:01,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 215 transitions. [2023-11-19 07:58:01,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:01,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 215 transitions. [2023-11-19 07:58:01,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,880 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,882 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 52 flow. Second operand 2 states and 215 transitions. [2023-11-19 07:58:01,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 9 transitions, 38 flow [2023-11-19 07:58:01,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 38 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:01,886 INFO L231 Difference]: Finished difference. Result has 12 places, 9 transitions, 22 flow [2023-11-19 07:58:01,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=12, PETRI_TRANSITIONS=9} [2023-11-19 07:58:01,891 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -13 predicate places. [2023-11-19 07:58:01,891 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 9 transitions, 22 flow [2023-11-19 07:58:01,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:01,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:01,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:58:01,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:01,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-11-19 07:58:01,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1222002536, now seen corresponding path program 1 times [2023-11-19 07:58:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:01,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091509950] [2023-11-19 07:58:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:01,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:01,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:01,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:01,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:01,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-19 07:58:01,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-19 07:58:01,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-19 07:58:01,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-19 07:58:01,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-19 07:58:01,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-19 07:58:01,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-19 07:58:01,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-19 07:58:01,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-19 07:58:01,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-19 07:58:01,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-19 07:58:01,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-19 07:58:01,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-19 07:58:01,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-19 07:58:01,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-19 07:58:01,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-19 07:58:01,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-19 07:58:01,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-19 07:58:01,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-19 07:58:01,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-19 07:58:01,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-19 07:58:01,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-19 07:58:01,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-19 07:58:01,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-19 07:58:01,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-19 07:58:01,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-19 07:58:01,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-19 07:58:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:01,960 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:01,962 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:01,963 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:58:02,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:58:02,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,057 INFO L124 PetriNetUnfolderBase]: 19/222 cut-off events. [2023-11-19 07:58:02,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:02,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 222 events. 19/222 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 515 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 183. Up to 6 conditions per place. [2023-11-19 07:58:02,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:02,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 198 transitions, 406 flow [2023-11-19 07:58:02,115 INFO L124 PetriNetUnfolderBase]: 19/222 cut-off events. [2023-11-19 07:58:02,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 222 events. 19/222 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 515 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 183. Up to 6 conditions per place. [2023-11-19 07:58:02,133 INFO L119 LiptonReduction]: Number of co-enabled transitions 19380 [2023-11-19 07:58:05,390 INFO L134 LiptonReduction]: Checked pairs total: 58783 [2023-11-19 07:58:05,390 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-11-19 07:58:05,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:05,394 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4151f0c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:05,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-19 07:58:05,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:05,397 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:58:05,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:05,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:05,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:05,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:58:05,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash 31016681, now seen corresponding path program 1 times [2023-11-19 07:58:05,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:05,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804148261] [2023-11-19 07:58:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:05,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:05,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:05,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804148261] [2023-11-19 07:58:05,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804148261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:05,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:05,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:05,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660997567] [2023-11-19 07:58:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:05,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:05,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 362 [2023-11-19 07:58:05,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 210 flow. Second operand has 2 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:05,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 362 [2023-11-19 07:58:05,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:05,674 INFO L124 PetriNetUnfolderBase]: 535/1644 cut-off events. [2023-11-19 07:58:05,675 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-19 07:58:05,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1644 events. 535/1644 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11716 event pairs, 519 based on Foata normal form. 84/1515 useless extension candidates. Maximal degree in co-relation 1344. Up to 914 conditions per place. [2023-11-19 07:58:05,691 INFO L140 encePairwiseOnDemand]: 343/362 looper letters, 29 selfloop transitions, 0 changer transitions 0/78 dead transitions. [2023-11-19 07:58:05,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 224 flow [2023-11-19 07:58:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2023-11-19 07:58:05,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303867403314917 [2023-11-19 07:58:05,700 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2023-11-19 07:58:05,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2023-11-19 07:58:05,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:05,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2023-11-19 07:58:05,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,711 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,712 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 210 flow. Second operand 2 states and 384 transitions. [2023-11-19 07:58:05,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 224 flow [2023-11-19 07:58:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:05,716 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 166 flow [2023-11-19 07:58:05,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-19 07:58:05,717 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -13 predicate places. [2023-11-19 07:58:05,718 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 166 flow [2023-11-19 07:58:05,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:05,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:58:05,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:05,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:58:05,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash -257693557, now seen corresponding path program 1 times [2023-11-19 07:58:05,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:05,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369067198] [2023-11-19 07:58:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:05,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:05,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:05,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369067198] [2023-11-19 07:58:05,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369067198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:05,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:05,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108627383] [2023-11-19 07:58:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:05,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:05,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 362 [2023-11-19 07:58:05,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:05,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:05,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 362 [2023-11-19 07:58:05,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:06,270 INFO L124 PetriNetUnfolderBase]: 878/2304 cut-off events. [2023-11-19 07:58:06,271 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-19 07:58:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 2304 events. 878/2304 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16484 event pairs, 376 based on Foata normal form. 0/2100 useless extension candidates. Maximal degree in co-relation 3873. Up to 1214 conditions per place. [2023-11-19 07:58:06,292 INFO L140 encePairwiseOnDemand]: 345/362 looper letters, 57 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2023-11-19 07:58:06,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 375 flow [2023-11-19 07:58:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-19 07:58:06,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49355432780847147 [2023-11-19 07:58:06,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-19 07:58:06,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-19 07:58:06,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:06,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-19 07:58:06,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,304 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 166 flow. Second operand 3 states and 536 transitions. [2023-11-19 07:58:06,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 375 flow [2023-11-19 07:58:06,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:06,308 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 278 flow [2023-11-19 07:58:06,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-11-19 07:58:06,309 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2023-11-19 07:58:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 278 flow [2023-11-19 07:58:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:06,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:58:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1841313190, now seen corresponding path program 1 times [2023-11-19 07:58:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569939711] [2023-11-19 07:58:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:06,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569939711] [2023-11-19 07:58:06,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569939711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:06,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:06,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868156267] [2023-11-19 07:58:06,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:06,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:06,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:06,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 362 [2023-11-19 07:58:06,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:06,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 362 [2023-11-19 07:58:06,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:07,034 INFO L124 PetriNetUnfolderBase]: 1862/4111 cut-off events. [2023-11-19 07:58:07,035 INFO L125 PetriNetUnfolderBase]: For 569/581 co-relation queries the response was YES. [2023-11-19 07:58:07,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 4111 events. 1862/4111 cut-off events. For 569/581 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30925 event pairs, 778 based on Foata normal form. 0/3937 useless extension candidates. Maximal degree in co-relation 8210. Up to 1674 conditions per place. [2023-11-19 07:58:07,073 INFO L140 encePairwiseOnDemand]: 340/362 looper letters, 80 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2023-11-19 07:58:07,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 573 flow [2023-11-19 07:58:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:07,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-11-19 07:58:07,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48987108655616945 [2023-11-19 07:58:07,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-11-19 07:58:07,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-11-19 07:58:07,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:07,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-11-19 07:58:07,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,084 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 278 flow. Second operand 3 states and 532 transitions. [2023-11-19 07:58:07,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 573 flow [2023-11-19 07:58:07,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:07,107 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 392 flow [2023-11-19 07:58:07,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2023-11-19 07:58:07,110 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -7 predicate places. [2023-11-19 07:58:07,110 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 392 flow [2023-11-19 07:58:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:07,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:07,111 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:58:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:07,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:58:07,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1655858083, now seen corresponding path program 1 times [2023-11-19 07:58:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:07,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37228671] [2023-11-19 07:58:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:07,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:07,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:58:07,181 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:07,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (39 of 40 remaining) [2023-11-19 07:58:07,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2023-11-19 07:58:07,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2023-11-19 07:58:07,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2023-11-19 07:58:07,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2023-11-19 07:58:07,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2023-11-19 07:58:07,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2023-11-19 07:58:07,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2023-11-19 07:58:07,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2023-11-19 07:58:07,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2023-11-19 07:58:07,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2023-11-19 07:58:07,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2023-11-19 07:58:07,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2023-11-19 07:58:07,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2023-11-19 07:58:07,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2023-11-19 07:58:07,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2023-11-19 07:58:07,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2023-11-19 07:58:07,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2023-11-19 07:58:07,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2023-11-19 07:58:07,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2023-11-19 07:58:07,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2023-11-19 07:58:07,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2023-11-19 07:58:07,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2023-11-19 07:58:07,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2023-11-19 07:58:07,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2023-11-19 07:58:07,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2023-11-19 07:58:07,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2023-11-19 07:58:07,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2023-11-19 07:58:07,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2023-11-19 07:58:07,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2023-11-19 07:58:07,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2023-11-19 07:58:07,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2023-11-19 07:58:07,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2023-11-19 07:58:07,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2023-11-19 07:58:07,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2023-11-19 07:58:07,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2023-11-19 07:58:07,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2023-11-19 07:58:07,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2023-11-19 07:58:07,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2023-11-19 07:58:07,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2023-11-19 07:58:07,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:58:07,192 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:58:07,193 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:58:07,193 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:58:07,234 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:58:07,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,336 INFO L124 PetriNetUnfolderBase]: 28/321 cut-off events. [2023-11-19 07:58:07,336 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:58:07,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 28/321 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1017 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 07:58:07,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:07,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,347 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 284 transitions, 586 flow [2023-11-19 07:58:07,406 INFO L124 PetriNetUnfolderBase]: 28/321 cut-off events. [2023-11-19 07:58:07,406 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:58:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 28/321 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1017 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 07:58:07,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 51000 [2023-11-19 07:58:11,718 INFO L134 LiptonReduction]: Checked pairs total: 159937 [2023-11-19 07:58:11,718 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-11-19 07:58:11,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:11,721 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4151f0c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:11,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-19 07:58:11,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:11,723 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:58:11,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:11,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:11,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:11,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 07:58:11,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 49336036, now seen corresponding path program 1 times [2023-11-19 07:58:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62351954] [2023-11-19 07:58:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:11,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:11,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62351954] [2023-11-19 07:58:11,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62351954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:11,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:11,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:11,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122037596] [2023-11-19 07:58:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:11,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:11,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:11,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 512 [2023-11-19 07:58:11,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 147 transitions, 312 flow. Second operand has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 512 [2023-11-19 07:58:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:14,898 INFO L124 PetriNetUnfolderBase]: 9867/22669 cut-off events. [2023-11-19 07:58:14,899 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2023-11-19 07:58:14,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37555 conditions, 22669 events. 9867/22669 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 228992 event pairs, 9767 based on Foata normal form. 964/20599 useless extension candidates. Maximal degree in co-relation 10674. Up to 14166 conditions per place. [2023-11-19 07:58:15,213 INFO L140 encePairwiseOnDemand]: 484/512 looper letters, 40 selfloop transitions, 0 changer transitions 0/113 dead transitions. [2023-11-19 07:58:15,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 324 flow [2023-11-19 07:58:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 548 transitions. [2023-11-19 07:58:15,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53515625 [2023-11-19 07:58:15,217 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 548 transitions. [2023-11-19 07:58:15,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 548 transitions. [2023-11-19 07:58:15,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:15,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 548 transitions. [2023-11-19 07:58:15,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 274.0) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 512.0) internal successors, (1536), 3 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 512.0) internal successors, (1536), 3 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,225 INFO L175 Difference]: Start difference. First operand has 139 places, 147 transitions, 312 flow. Second operand 2 states and 548 transitions. [2023-11-19 07:58:15,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 324 flow [2023-11-19 07:58:15,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 322 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:15,230 INFO L231 Difference]: Finished difference. Result has 118 places, 113 transitions, 242 flow [2023-11-19 07:58:15,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=512, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=118, PETRI_TRANSITIONS=113} [2023-11-19 07:58:15,232 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -21 predicate places. [2023-11-19 07:58:15,232 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 113 transitions, 242 flow [2023-11-19 07:58:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:15,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:58:15,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:58:15,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 07:58:15,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 167358136, now seen corresponding path program 1 times [2023-11-19 07:58:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:15,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711175605] [2023-11-19 07:58:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:15,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:15,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711175605] [2023-11-19 07:58:15,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711175605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:15,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734258082] [2023-11-19 07:58:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:15,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 512 [2023-11-19 07:58:15,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 113 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:15,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:15,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 512 [2023-11-19 07:58:15,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:21,027 INFO L124 PetriNetUnfolderBase]: 26121/50426 cut-off events. [2023-11-19 07:58:21,028 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-11-19 07:58:21,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89341 conditions, 50426 events. 26121/50426 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 492188 event pairs, 13172 based on Foata normal form. 0/45755 useless extension candidates. Maximal degree in co-relation 89335. Up to 28545 conditions per place. [2023-11-19 07:58:21,411 INFO L140 encePairwiseOnDemand]: 486/512 looper letters, 82 selfloop transitions, 20 changer transitions 0/160 dead transitions. [2023-11-19 07:58:21,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 550 flow [2023-11-19 07:58:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-11-19 07:58:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498046875 [2023-11-19 07:58:21,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-11-19 07:58:21,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-11-19 07:58:21,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:21,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-11-19 07:58:21,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 512.0) internal successors, (2048), 4 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 512.0) internal successors, (2048), 4 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,426 INFO L175 Difference]: Start difference. First operand has 118 places, 113 transitions, 242 flow. Second operand 3 states and 765 transitions. [2023-11-19 07:58:21,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 160 transitions, 550 flow [2023-11-19 07:58:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:21,440 INFO L231 Difference]: Finished difference. Result has 122 places, 133 transitions, 414 flow [2023-11-19 07:58:21,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=512, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=122, PETRI_TRANSITIONS=133} [2023-11-19 07:58:21,443 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, -17 predicate places. [2023-11-19 07:58:21,443 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 133 transitions, 414 flow [2023-11-19 07:58:21,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:21,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:21,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:58:21,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2023-11-19 07:58:21,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:21,445 INFO L85 PathProgramCache]: Analyzing trace with hash -689344880, now seen corresponding path program 1 times [2023-11-19 07:58:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614814145] [2023-11-19 07:58:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:21,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614814145] [2023-11-19 07:58:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614814145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:21,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456833229] [2023-11-19 07:58:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:21,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 512 [2023-11-19 07:58:21,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 133 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:21,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:21,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 512 [2023-11-19 07:58:21,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:39,076 INFO L124 PetriNetUnfolderBase]: 95283/165913 cut-off events. [2023-11-19 07:58:39,076 INFO L125 PetriNetUnfolderBase]: For 27639/28505 co-relation queries the response was YES. [2023-11-19 07:58:39,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342648 conditions, 165913 events. 95283/165913 cut-off events. For 27639/28505 co-relation queries the response was YES. Maximal size of possible extension queue 3975. Compared 1709500 event pairs, 40816 based on Foata normal form. 0/153868 useless extension candidates. Maximal degree in co-relation 342640. Up to 72423 conditions per place. [2023-11-19 07:58:40,658 INFO L140 encePairwiseOnDemand]: 479/512 looper letters, 123 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2023-11-19 07:58:40,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 201 transitions, 920 flow [2023-11-19 07:58:40,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-11-19 07:58:40,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915364583333333 [2023-11-19 07:58:40,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-11-19 07:58:40,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-11-19 07:58:40,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:40,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-11-19 07:58:40,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 512.0) internal successors, (2048), 4 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 512.0) internal successors, (2048), 4 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,689 INFO L175 Difference]: Start difference. First operand has 122 places, 133 transitions, 414 flow. Second operand 3 states and 755 transitions. [2023-11-19 07:58:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 201 transitions, 920 flow