./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl --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 ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:36,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:37,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:29:37,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:37,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:37,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:37,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:37,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:37,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:37,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:37,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:37,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:37,043 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:37,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:37,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:29:37,045 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:29:37,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:37,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:29:37,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:37,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:29:37,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:37,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:29:37,049 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:29:37,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:29:37,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:29:37,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:37,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:37,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:37,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:37,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:37,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:37,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:37,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:37,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:29:37,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:37,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:29:37,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:37,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:29:37,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:37,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:37,057 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:37,058 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_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee95c6207d65de8bda179fc4eddfd8312f741d4c9ea2d4ac3b4363fbcaae8d19 [2023-11-12 02:29:37,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:37,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:37,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:37,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:37,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:37,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2023-11-12 02:29:40,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:40,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:40,845 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/sv-benchmarks/c/pthread/singleton_with-uninit-problems-b.i [2023-11-12 02:29:40,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/data/b4e011b18/b08b8aa6157f4c45ab3cb7fb035dd5bc/FLAG02976eebe [2023-11-12 02:29:40,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/data/b4e011b18/b08b8aa6157f4c45ab3cb7fb035dd5bc [2023-11-12 02:29:40,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:40,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:40,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:40,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:40,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:40,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:40" (1/1) ... [2023-11-12 02:29:40,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476e3d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:40, skipping insertion in model container [2023-11-12 02:29:40,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:40" (1/1) ... [2023-11-12 02:29:40,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:41,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:41,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:41,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:41,810 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:41,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41 WrapperNode [2023-11-12 02:29:41,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:41,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:41,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:41,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:41,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,890 INFO L138 Inliner]: procedures = 323, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-12 02:29:41,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:41,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:41,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:41,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:41,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,933 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:41,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:41,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:41,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:41,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (1/1) ... [2023-11-12 02:29:41,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:41,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:42,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86ed365d-b803-4cbd-b516-bb37f59e6997/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:29:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:29:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:29:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-12 02:29:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-12 02:29:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:29:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:29:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:29:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:29:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:29:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:29:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:29:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:29:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:29:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:42,049 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:29:42,190 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:42,192 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:42,593 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:42,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:42,603 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:29:42,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:42 BoogieIcfgContainer [2023-11-12 02:29:42,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:42,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:42,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:42,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:42,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:40" (1/3) ... [2023-11-12 02:29:42,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddb6117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:42, skipping insertion in model container [2023-11-12 02:29:42,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:41" (2/3) ... [2023-11-12 02:29:42,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddb6117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:42, skipping insertion in model container [2023-11-12 02:29:42,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:42" (3/3) ... [2023-11-12 02:29:42,614 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems-b.i [2023-11-12 02:29:42,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:29:42,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:42,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-12 02:29:42,635 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:29:42,814 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-12 02:29:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 310 transitions, 717 flow [2023-11-12 02:29:42,995 INFO L124 PetriNetUnfolderBase]: 8/223 cut-off events. [2023-11-12 02:29:42,995 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:29:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 223 events. 8/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 233 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2023-11-12 02:29:43,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 310 transitions, 717 flow [2023-11-12 02:29:43,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 197 transitions, 445 flow [2023-11-12 02:29:43,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:29:43,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 197 transitions, 445 flow [2023-11-12 02:29:43,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 197 transitions, 445 flow [2023-11-12 02:29:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 197 transitions, 445 flow [2023-11-12 02:29:43,099 INFO L124 PetriNetUnfolderBase]: 5/197 cut-off events. [2023-11-12 02:29:43,099 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:29:43,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 197 events. 5/197 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 194 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2023-11-12 02:29:43,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2023-11-12 02:29:47,295 INFO L134 LiptonReduction]: Checked pairs total: 42502 [2023-11-12 02:29:47,296 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-12 02:29:47,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:47,325 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;@130e8a19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:47,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-12 02:29:47,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:47,331 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-12 02:29:47,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:47,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:47,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:47,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 02:29:47,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 682511882, now seen corresponding path program 1 times [2023-11-12 02:29:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:47,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167012071] [2023-11-12 02:29:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:47,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167012071] [2023-11-12 02:29:47,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167012071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:47,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:47,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:47,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516160583] [2023-11-12 02:29:47,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:47,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:29:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:29:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:29:47,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 410 [2023-11-12 02:29:47,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 259 flow. Second operand has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:47,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:47,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 410 [2023-11-12 02:29:47,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:49,764 INFO L124 PetriNetUnfolderBase]: 4535/10049 cut-off events. [2023-11-12 02:29:49,765 INFO L125 PetriNetUnfolderBase]: For 645/655 co-relation queries the response was YES. [2023-11-12 02:29:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16833 conditions, 10049 events. 4535/10049 cut-off events. For 645/655 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 88902 event pairs, 4363 based on Foata normal form. 1/8829 useless extension candidates. Maximal degree in co-relation 16816. Up to 6086 conditions per place. [2023-11-12 02:29:49,934 INFO L140 encePairwiseOnDemand]: 405/410 looper letters, 39 selfloop transitions, 0 changer transitions 1/99 dead transitions. [2023-11-12 02:29:49,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 329 flow [2023-11-12 02:29:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:29:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:29:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 601 transitions. [2023-11-12 02:29:49,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7329268292682927 [2023-11-12 02:29:49,965 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 601 transitions. [2023-11-12 02:29:49,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 601 transitions. [2023-11-12 02:29:49,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:49,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 601 transitions. [2023-11-12 02:29:49,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 300.5) internal successors, (601), 2 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:49,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:49,998 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:50,001 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 259 flow. Second operand 2 states and 601 transitions. [2023-11-12 02:29:50,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 329 flow [2023-11-12 02:29:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 295 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-12 02:29:50,030 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 212 flow [2023-11-12 02:29:50,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2023-11-12 02:29:50,038 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -16 predicate places. [2023-11-12 02:29:50,038 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 212 flow [2023-11-12 02:29:50,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:50,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:50,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:50,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:50,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 02:29:50,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1053107267, now seen corresponding path program 1 times [2023-11-12 02:29:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306600225] [2023-11-12 02:29:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:50,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:50,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:50,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306600225] [2023-11-12 02:29:50,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306600225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:50,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:29:50,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484919040] [2023-11-12 02:29:50,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:50,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:51,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 410 [2023-11-12 02:29:51,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 265.3333333333333) internal successors, (1592), 6 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:51,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:51,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 410 [2023-11-12 02:29:51,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:01,769 INFO L124 PetriNetUnfolderBase]: 47732/76095 cut-off events. [2023-11-12 02:30:01,769 INFO L125 PetriNetUnfolderBase]: For 1645/1740 co-relation queries the response was YES. [2023-11-12 02:30:01,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139217 conditions, 76095 events. 47732/76095 cut-off events. For 1645/1740 co-relation queries the response was YES. Maximal size of possible extension queue 2776. Compared 650750 event pairs, 22832 based on Foata normal form. 1/69527 useless extension candidates. Maximal degree in co-relation 139214. Up to 39485 conditions per place. [2023-11-12 02:30:02,442 INFO L140 encePairwiseOnDemand]: 400/410 looper letters, 170 selfloop transitions, 21 changer transitions 12/254 dead transitions. [2023-11-12 02:30:02,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 254 transitions, 990 flow [2023-11-12 02:30:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:30:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:30:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1788 transitions. [2023-11-12 02:30:02,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7268292682926829 [2023-11-12 02:30:02,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1788 transitions. [2023-11-12 02:30:02,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1788 transitions. [2023-11-12 02:30:02,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:02,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1788 transitions. [2023-11-12 02:30:02,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.0) internal successors, (1788), 6 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:02,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:02,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:02,477 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 212 flow. Second operand 6 states and 1788 transitions. [2023-11-12 02:30:02,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 254 transitions, 990 flow [2023-11-12 02:30:02,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 254 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:02,487 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 354 flow [2023-11-12 02:30:02,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2023-11-12 02:30:02,489 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -7 predicate places. [2023-11-12 02:30:02,495 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 354 flow [2023-11-12 02:30:02,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.3333333333333) internal successors, (1592), 6 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:02,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:02,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:02,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:30:02,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 02:30:02,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1834300669, now seen corresponding path program 1 times [2023-11-12 02:30:02,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:02,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367587826] [2023-11-12 02:30:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:02,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367587826] [2023-11-12 02:30:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367587826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:30:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43172735] [2023-11-12 02:30:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:03,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:30:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:30:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:30:04,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 410 [2023-11-12 02:30:04,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 267.5) internal successors, (1605), 6 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:04,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:04,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 410 [2023-11-12 02:30:04,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:09,427 INFO L124 PetriNetUnfolderBase]: 25507/43698 cut-off events. [2023-11-12 02:30:09,428 INFO L125 PetriNetUnfolderBase]: For 18358/20289 co-relation queries the response was YES. [2023-11-12 02:30:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97207 conditions, 43698 events. 25507/43698 cut-off events. For 18358/20289 co-relation queries the response was YES. Maximal size of possible extension queue 1964. Compared 377957 event pairs, 6122 based on Foata normal form. 48/40188 useless extension candidates. Maximal degree in co-relation 97199. Up to 31092 conditions per place. [2023-11-12 02:30:09,937 INFO L140 encePairwiseOnDemand]: 401/410 looper letters, 78 selfloop transitions, 24 changer transitions 0/158 dead transitions. [2023-11-12 02:30:09,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 158 transitions, 713 flow [2023-11-12 02:30:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:30:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:30:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1667 transitions. [2023-11-12 02:30:09,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776422764227642 [2023-11-12 02:30:09,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1667 transitions. [2023-11-12 02:30:09,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1667 transitions. [2023-11-12 02:30:09,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:09,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1667 transitions. [2023-11-12 02:30:09,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:09,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:09,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:09,967 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 354 flow. Second operand 6 states and 1667 transitions. [2023-11-12 02:30:09,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 158 transitions, 713 flow [2023-11-12 02:30:10,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 158 transitions, 713 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:30:10,238 INFO L231 Difference]: Finished difference. Result has 116 places, 137 transitions, 573 flow [2023-11-12 02:30:10,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=116, PETRI_TRANSITIONS=137} [2023-11-12 02:30:10,240 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2023-11-12 02:30:10,241 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 137 transitions, 573 flow [2023-11-12 02:30:10,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.5) internal successors, (1605), 6 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:10,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:10,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:30:10,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 02:30:10,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1494910694, now seen corresponding path program 1 times [2023-11-12 02:30:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:10,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243432168] [2023-11-12 02:30:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243432168] [2023-11-12 02:30:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243432168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921630655] [2023-11-12 02:30:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:10,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:10,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:10,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 410 [2023-11-12 02:30:10,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 137 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:10,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:10,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 410 [2023-11-12 02:30:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:30:18,657 INFO L124 PetriNetUnfolderBase]: 41896/72088 cut-off events. [2023-11-12 02:30:18,657 INFO L125 PetriNetUnfolderBase]: For 53669/66340 co-relation queries the response was YES. [2023-11-12 02:30:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165508 conditions, 72088 events. 41896/72088 cut-off events. For 53669/66340 co-relation queries the response was YES. Maximal size of possible extension queue 3808. Compared 666334 event pairs, 20730 based on Foata normal form. 110/65564 useless extension candidates. Maximal degree in co-relation 165498. Up to 50420 conditions per place. [2023-11-12 02:30:19,647 INFO L140 encePairwiseOnDemand]: 402/410 looper letters, 69 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2023-11-12 02:30:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 145 transitions, 738 flow [2023-11-12 02:30:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:30:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:30:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-11-12 02:30:19,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6796747967479675 [2023-11-12 02:30:19,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-11-12 02:30:19,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-11-12 02:30:19,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:30:19,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-11-12 02:30:19,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:19,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:19,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:19,665 INFO L175 Difference]: Start difference. First operand has 116 places, 137 transitions, 573 flow. Second operand 3 states and 836 transitions. [2023-11-12 02:30:19,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 145 transitions, 738 flow [2023-11-12 02:30:19,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 145 transitions, 711 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:30:19,863 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 566 flow [2023-11-12 02:30:19,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2023-11-12 02:30:19,866 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -7 predicate places. [2023-11-12 02:30:19,866 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 566 flow [2023-11-12 02:30:19,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:19,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:30:19,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:30:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:30:19,868 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-12 02:30:19,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:30:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1781932416, now seen corresponding path program 1 times [2023-11-12 02:30:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:30:19,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097886725] [2023-11-12 02:30:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:30:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:30:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:30:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:30:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:30:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097886725] [2023-11-12 02:30:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097886725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:30:20,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:30:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:30:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573944971] [2023-11-12 02:30:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:30:20,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:30:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:30:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:30:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:30:20,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 410 [2023-11-12 02:30:20,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:30:20,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:30:20,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 410 [2023-11-12 02:30:20,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand