./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/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_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/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_cb345653-3e4f-44d6-8e9f-99da91225770/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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:58,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:59,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:38:59,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:59,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:59,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:59,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:59,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:59,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:59,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:59,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:59,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:59,139 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:59,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:59,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:38:59,142 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:59,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:59,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:59,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:59,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:38:59,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:59,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:38:59,145 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:38:59,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:38:59,146 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:59,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:59,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:59,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:59,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:59,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:59,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:59,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:59,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:59,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:38:59,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:59,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:59,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:59,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:38:59,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:59,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:59,151 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:59,151 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_cb345653-3e4f-44d6-8e9f-99da91225770/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2023-11-19 07:38:59,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:59,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:59,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:59,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:59,487 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:59,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-19 07:39:02,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:02,913 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:02,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2023-11-19 07:39:02,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/data/02ac898c3/30d7793e9a41457b8fd6abd98df7697b/FLAGf14a10971 [2023-11-19 07:39:02,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/data/02ac898c3/30d7793e9a41457b8fd6abd98df7697b [2023-11-19 07:39:02,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:02,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:02,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:02,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:02,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:03,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:02" (1/1) ... [2023-11-19 07:39:03,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398b0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:03, skipping insertion in model container [2023-11-19 07:39:03,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:02" (1/1) ... [2023-11-19 07:39:03,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:03,384 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:39:03,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:03,828 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:03,859 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:39:03,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:04,031 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,032 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,032 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:04,040 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:04,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04 WrapperNode [2023-11-19 07:39:04,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:04,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:04,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:04,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,137 INFO L138 Inliner]: procedures = 325, calls = 54, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-19 07:39:04,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:04,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:04,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:04,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:04,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:04,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:04,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:04,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:04,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (1/1) ... [2023-11-19 07:39:04,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:04,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:04,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:04,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb345653-3e4f-44d6-8e9f-99da91225770/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:04,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:39:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-19 07:39:04,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-19 07:39:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:39:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:39:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:39:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:39:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:39:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:39:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:04,318 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 07:39:04,536 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:04,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:04,948 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:05,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:05,030 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:39:05,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:05 BoogieIcfgContainer [2023-11-19 07:39:05,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:05,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:05,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:05,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:05,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:02" (1/3) ... [2023-11-19 07:39:05,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413266da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:05, skipping insertion in model container [2023-11-19 07:39:05,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:04" (2/3) ... [2023-11-19 07:39:05,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413266da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:05, skipping insertion in model container [2023-11-19 07:39:05,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:05" (3/3) ... [2023-11-19 07:39:05,064 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-11-19 07:39:05,077 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:39:05,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:05,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-19 07:39:05,089 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:05,303 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-19 07:39:05,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 286 transitions, 669 flow [2023-11-19 07:39:05,433 INFO L124 PetriNetUnfolderBase]: 8/199 cut-off events. [2023-11-19 07:39:05,433 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:39:05,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 199 events. 8/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 158 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-11-19 07:39:05,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 286 transitions, 669 flow [2023-11-19 07:39:05,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 173 transitions, 397 flow [2023-11-19 07:39:05,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:05,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 173 transitions, 397 flow [2023-11-19 07:39:05,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 173 transitions, 397 flow [2023-11-19 07:39:05,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 173 transitions, 397 flow [2023-11-19 07:39:05,513 INFO L124 PetriNetUnfolderBase]: 5/173 cut-off events. [2023-11-19 07:39:05,513 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:39:05,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 173 events. 5/173 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-11-19 07:39:05,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 4608 [2023-11-19 07:39:09,603 INFO L134 LiptonReduction]: Checked pairs total: 20067 [2023-11-19 07:39:09,603 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-11-19 07:39:09,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:09,627 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;@5f113c8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:09,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-19 07:39:09,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:09,632 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:39:09,632 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:09,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:09,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:39:09,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:09,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 673646075, now seen corresponding path program 1 times [2023-11-19 07:39:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383982471] [2023-11-19 07:39:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:09,948 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 07:39:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383982471] [2023-11-19 07:39:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383982471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:09,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716993935] [2023-11-19 07:39:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:09,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:09,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 388 [2023-11-19 07:39:09,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 227 flow. Second operand has 2 states, 2 states have (on average 244.5) internal successors, (489), 2 states have internal predecessors, (489), 0 states have call successors, (0), 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 07:39:09,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:10,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 388 [2023-11-19 07:39:10,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:10,226 INFO L124 PetriNetUnfolderBase]: 317/933 cut-off events. [2023-11-19 07:39:10,226 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-19 07:39:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 933 events. 317/933 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4616 event pairs, 285 based on Foata normal form. 1/837 useless extension candidates. Maximal degree in co-relation 1542. Up to 488 conditions per place. [2023-11-19 07:39:10,248 INFO L140 encePairwiseOnDemand]: 375/388 looper letters, 31 selfloop transitions, 0 changer transitions 1/75 dead transitions. [2023-11-19 07:39:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 265 flow [2023-11-19 07:39:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:39:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2023-11-19 07:39:10,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6817010309278351 [2023-11-19 07:39:10,265 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2023-11-19 07:39:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2023-11-19 07:39:10,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:10,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2023-11-19 07:39:10,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 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 07:39:10,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 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 07:39:10,286 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 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 07:39:10,288 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 227 flow. Second operand 2 states and 529 transitions. [2023-11-19 07:39:10,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 265 flow [2023-11-19 07:39:10,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 231 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-19 07:39:10,299 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 164 flow [2023-11-19 07:39:10,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2023-11-19 07:39:10,307 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -24 predicate places. [2023-11-19 07:39:10,307 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 164 flow [2023-11-19 07:39:10,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 244.5) internal successors, (489), 2 states have internal predecessors, (489), 0 states have call successors, (0), 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 07:39:10,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:10,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:10,309 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)] === [2023-11-19 07:39:10,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:10,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1447464408, now seen corresponding path program 1 times [2023-11-19 07:39:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239715767] [2023-11-19 07:39:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:10,775 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 07:39:10,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239715767] [2023-11-19 07:39:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239715767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:10,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829479836] [2023-11-19 07:39:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 388 [2023-11-19 07:39:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 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 07:39:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 388 [2023-11-19 07:39:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:12,457 INFO L124 PetriNetUnfolderBase]: 2227/4882 cut-off events. [2023-11-19 07:39:12,458 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-11-19 07:39:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8288 conditions, 4882 events. 2227/4882 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 33808 event pairs, 890 based on Foata normal form. 0/4359 useless extension candidates. Maximal degree in co-relation 8285. Up to 2312 conditions per place. [2023-11-19 07:39:12,497 INFO L140 encePairwiseOnDemand]: 378/388 looper letters, 120 selfloop transitions, 21 changer transitions 12/190 dead transitions. [2023-11-19 07:39:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 190 transitions, 762 flow [2023-11-19 07:39:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1546 transitions. [2023-11-19 07:39:12,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6640893470790378 [2023-11-19 07:39:12,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1546 transitions. [2023-11-19 07:39:12,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1546 transitions. [2023-11-19 07:39:12,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:12,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1546 transitions. [2023-11-19 07:39:12,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.6666666666667) internal successors, (1546), 6 states have internal predecessors, (1546), 0 states have call successors, (0), 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 07:39:12,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:12,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:12,565 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 164 flow. Second operand 6 states and 1546 transitions. [2023-11-19 07:39:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 190 transitions, 762 flow [2023-11-19 07:39:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 190 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:12,572 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 306 flow [2023-11-19 07:39:12,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-11-19 07:39:12,574 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -15 predicate places. [2023-11-19 07:39:12,574 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 306 flow [2023-11-19 07:39:12,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 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 07:39:12,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:12,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:12,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:12,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:12,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 284128623, now seen corresponding path program 1 times [2023-11-19 07:39:12,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:12,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973405533] [2023-11-19 07:39:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:12,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:12,986 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 07:39:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973405533] [2023-11-19 07:39:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973405533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020380687] [2023-11-19 07:39:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:13,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 388 [2023-11-19 07:39:13,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 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 07:39:13,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:13,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 388 [2023-11-19 07:39:13,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:14,186 INFO L124 PetriNetUnfolderBase]: 1593/2722 cut-off events. [2023-11-19 07:39:14,186 INFO L125 PetriNetUnfolderBase]: For 1821/2444 co-relation queries the response was YES. [2023-11-19 07:39:14,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 2722 events. 1593/2722 cut-off events. For 1821/2444 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13685 event pairs, 288 based on Foata normal form. 2/2488 useless extension candidates. Maximal degree in co-relation 7466. Up to 1837 conditions per place. [2023-11-19 07:39:14,220 INFO L140 encePairwiseOnDemand]: 379/388 looper letters, 62 selfloop transitions, 24 changer transitions 0/128 dead transitions. [2023-11-19 07:39:14,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 621 flow [2023-11-19 07:39:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2023-11-19 07:39:14,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6267182130584192 [2023-11-19 07:39:14,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2023-11-19 07:39:14,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2023-11-19 07:39:14,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:14,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2023-11-19 07:39:14,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 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 07:39:14,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:14,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:14,242 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 306 flow. Second operand 6 states and 1459 transitions. [2023-11-19 07:39:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 621 flow [2023-11-19 07:39:14,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 621 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:14,262 INFO L231 Difference]: Finished difference. Result has 92 places, 113 transitions, 525 flow [2023-11-19 07:39:14,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=92, PETRI_TRANSITIONS=113} [2023-11-19 07:39:14,264 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -10 predicate places. [2023-11-19 07:39:14,264 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 113 transitions, 525 flow [2023-11-19 07:39:14,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.5) internal successors, (1413), 6 states have internal predecessors, (1413), 0 states have call successors, (0), 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 07:39:14,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:14,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:14,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:14,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1759754885, now seen corresponding path program 1 times [2023-11-19 07:39:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942292924] [2023-11-19 07:39:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:15,157 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 07:39:15,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942292924] [2023-11-19 07:39:15,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942292924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:15,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:15,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:39:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19812979] [2023-11-19 07:39:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:39:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:39:15,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:39:17,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 388 [2023-11-19 07:39:17,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 113 transitions, 525 flow. Second operand has 11 states, 11 states have (on average 218.54545454545453) internal successors, (2404), 11 states have internal predecessors, (2404), 0 states have call successors, (0), 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 07:39:17,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:17,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 388 [2023-11-19 07:39:17,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:19,166 INFO L124 PetriNetUnfolderBase]: 3044/6579 cut-off events. [2023-11-19 07:39:19,166 INFO L125 PetriNetUnfolderBase]: For 6206/6225 co-relation queries the response was YES. [2023-11-19 07:39:19,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17962 conditions, 6579 events. 3044/6579 cut-off events. For 6206/6225 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 48192 event pairs, 1008 based on Foata normal form. 138/6028 useless extension candidates. Maximal degree in co-relation 17952. Up to 2298 conditions per place. [2023-11-19 07:39:19,237 INFO L140 encePairwiseOnDemand]: 374/388 looper letters, 191 selfloop transitions, 42 changer transitions 27/296 dead transitions. [2023-11-19 07:39:19,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 296 transitions, 1700 flow [2023-11-19 07:39:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:39:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:39:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2825 transitions. [2023-11-19 07:39:19,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067439862542955 [2023-11-19 07:39:19,247 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2825 transitions. [2023-11-19 07:39:19,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2825 transitions. [2023-11-19 07:39:19,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:19,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2825 transitions. [2023-11-19 07:39:19,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 235.41666666666666) internal successors, (2825), 12 states have internal predecessors, (2825), 0 states have call successors, (0), 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 07:39:19,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 388.0) internal successors, (5044), 13 states have internal predecessors, (5044), 0 states have call successors, (0), 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 07:39:19,274 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 388.0) internal successors, (5044), 13 states have internal predecessors, (5044), 0 states have call successors, (0), 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 07:39:19,274 INFO L175 Difference]: Start difference. First operand has 92 places, 113 transitions, 525 flow. Second operand 12 states and 2825 transitions. [2023-11-19 07:39:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 296 transitions, 1700 flow [2023-11-19 07:39:19,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 296 transitions, 1651 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:39:19,300 INFO L231 Difference]: Finished difference. Result has 106 places, 125 transitions, 746 flow [2023-11-19 07:39:19,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=746, PETRI_PLACES=106, PETRI_TRANSITIONS=125} [2023-11-19 07:39:19,301 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2023-11-19 07:39:19,301 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 125 transitions, 746 flow [2023-11-19 07:39:19,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 218.54545454545453) internal successors, (2404), 11 states have internal predecessors, (2404), 0 states have call successors, (0), 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 07:39:19,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:19,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:19,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:19,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:19,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1236072205, now seen corresponding path program 2 times [2023-11-19 07:39:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850176539] [2023-11-19 07:39:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:19,845 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 07:39:19,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850176539] [2023-11-19 07:39:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850176539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:19,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:19,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:39:19,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097867849] [2023-11-19 07:39:19,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:19,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:39:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:19,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:39:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:39:20,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 388 [2023-11-19 07:39:20,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 125 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 231.77777777777777) internal successors, (2086), 9 states have internal predecessors, (2086), 0 states have call successors, (0), 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 07:39:20,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:20,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 388 [2023-11-19 07:39:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:22,498 INFO L124 PetriNetUnfolderBase]: 2871/5583 cut-off events. [2023-11-19 07:39:22,499 INFO L125 PetriNetUnfolderBase]: For 9613/9789 co-relation queries the response was YES. [2023-11-19 07:39:22,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18256 conditions, 5583 events. 2871/5583 cut-off events. For 9613/9789 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 35234 event pairs, 659 based on Foata normal form. 69/5058 useless extension candidates. Maximal degree in co-relation 18240. Up to 2294 conditions per place. [2023-11-19 07:39:22,577 INFO L140 encePairwiseOnDemand]: 382/388 looper letters, 175 selfloop transitions, 8 changer transitions 16/234 dead transitions. [2023-11-19 07:39:22,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 234 transitions, 1510 flow [2023-11-19 07:39:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1759 transitions. [2023-11-19 07:39:22,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476435935198822 [2023-11-19 07:39:22,586 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1759 transitions. [2023-11-19 07:39:22,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1759 transitions. [2023-11-19 07:39:22,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:22,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1759 transitions. [2023-11-19 07:39:22,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 251.28571428571428) internal successors, (1759), 7 states have internal predecessors, (1759), 0 states have call successors, (0), 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 07:39:22,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 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 07:39:22,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 388.0) internal successors, (3104), 8 states have internal predecessors, (3104), 0 states have call successors, (0), 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 07:39:22,604 INFO L175 Difference]: Start difference. First operand has 106 places, 125 transitions, 746 flow. Second operand 7 states and 1759 transitions. [2023-11-19 07:39:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 234 transitions, 1510 flow [2023-11-19 07:39:22,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 234 transitions, 1451 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-19 07:39:22,700 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 684 flow [2023-11-19 07:39:22,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=684, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2023-11-19 07:39:22,701 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2023-11-19 07:39:22,701 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 684 flow [2023-11-19 07:39:22,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 231.77777777777777) internal successors, (2086), 9 states have internal predecessors, (2086), 0 states have call successors, (0), 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 07:39:22,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:22,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:22,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread0Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:22,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1898522381, now seen corresponding path program 1 times [2023-11-19 07:39:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266662216] [2023-11-19 07:39:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:23,158 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 07:39:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266662216] [2023-11-19 07:39:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266662216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261541497] [2023-11-19 07:39:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:23,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 388 [2023-11-19 07:39:23,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 684 flow. Second operand has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 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 07:39:23,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:23,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 388 [2023-11-19 07:39:23,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:26,696 INFO L124 PetriNetUnfolderBase]: 8725/14378 cut-off events. [2023-11-19 07:39:26,696 INFO L125 PetriNetUnfolderBase]: For 45845/46803 co-relation queries the response was YES. [2023-11-19 07:39:26,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51070 conditions, 14378 events. 8725/14378 cut-off events. For 45845/46803 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 93362 event pairs, 1246 based on Foata normal form. 209/13333 useless extension candidates. Maximal degree in co-relation 51057. Up to 9669 conditions per place. [2023-11-19 07:39:26,870 INFO L140 encePairwiseOnDemand]: 378/388 looper letters, 90 selfloop transitions, 197 changer transitions 0/326 dead transitions. [2023-11-19 07:39:26,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 326 transitions, 3084 flow [2023-11-19 07:39:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1469 transitions. [2023-11-19 07:39:26,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6310137457044673 [2023-11-19 07:39:26,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1469 transitions. [2023-11-19 07:39:26,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1469 transitions. [2023-11-19 07:39:26,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:26,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1469 transitions. [2023-11-19 07:39:26,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 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 07:39:26,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:26,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:26,891 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 684 flow. Second operand 6 states and 1469 transitions. [2023-11-19 07:39:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 326 transitions, 3084 flow [2023-11-19 07:39:26,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 326 transitions, 3067 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-19 07:39:26,959 INFO L231 Difference]: Finished difference. Result has 103 places, 316 transitions, 3361 flow [2023-11-19 07:39:26,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3361, PETRI_PLACES=103, PETRI_TRANSITIONS=316} [2023-11-19 07:39:26,962 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2023-11-19 07:39:26,963 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 316 transitions, 3361 flow [2023-11-19 07:39:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 0 states have call successors, (0), 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 07:39:26,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:26,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:26,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread0Err1ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:26,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1471104462, now seen corresponding path program 1 times [2023-11-19 07:39:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547561409] [2023-11-19 07:39:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:27,535 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 07:39:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547561409] [2023-11-19 07:39:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547561409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:27,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:39:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95127554] [2023-11-19 07:39:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:39:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:27,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:39:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:39:28,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 388 [2023-11-19 07:39:28,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 316 transitions, 3361 flow. Second operand has 9 states, 9 states have (on average 234.44444444444446) internal successors, (2110), 9 states have internal predecessors, (2110), 0 states have call successors, (0), 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 07:39:28,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:28,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 388 [2023-11-19 07:39:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:31,381 INFO L124 PetriNetUnfolderBase]: 8175/13995 cut-off events. [2023-11-19 07:39:31,381 INFO L125 PetriNetUnfolderBase]: For 71154/72535 co-relation queries the response was YES. [2023-11-19 07:39:31,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60657 conditions, 13995 events. 8175/13995 cut-off events. For 71154/72535 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 94516 event pairs, 682 based on Foata normal form. 841/13849 useless extension candidates. Maximal degree in co-relation 60640. Up to 7551 conditions per place. [2023-11-19 07:39:31,562 INFO L140 encePairwiseOnDemand]: 381/388 looper letters, 367 selfloop transitions, 12 changer transitions 0/418 dead transitions. [2023-11-19 07:39:31,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 418 transitions, 5217 flow [2023-11-19 07:39:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1913 transitions. [2023-11-19 07:39:31,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163015463917526 [2023-11-19 07:39:31,571 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1913 transitions. [2023-11-19 07:39:31,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1913 transitions. [2023-11-19 07:39:31,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:31,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1913 transitions. [2023-11-19 07:39:31,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.125) internal successors, (1913), 8 states have internal predecessors, (1913), 0 states have call successors, (0), 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 07:39:31,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 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 07:39:31,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 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 07:39:31,608 INFO L175 Difference]: Start difference. First operand has 103 places, 316 transitions, 3361 flow. Second operand 8 states and 1913 transitions. [2023-11-19 07:39:31,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 418 transitions, 5217 flow [2023-11-19 07:39:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 418 transitions, 5167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:31,759 INFO L231 Difference]: Finished difference. Result has 108 places, 315 transitions, 3331 flow [2023-11-19 07:39:31,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=3307, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3331, PETRI_PLACES=108, PETRI_TRANSITIONS=315} [2023-11-19 07:39:31,761 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2023-11-19 07:39:31,762 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 315 transitions, 3331 flow [2023-11-19 07:39:31,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 234.44444444444446) internal successors, (2110), 9 states have internal predecessors, (2110), 0 states have call successors, (0), 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 07:39:31,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:31,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:31,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread0Err2ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:31,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1753788163, now seen corresponding path program 1 times [2023-11-19 07:39:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:31,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408923743] [2023-11-19 07:39:31,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:31,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:32,349 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 07:39:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408923743] [2023-11-19 07:39:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408923743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:32,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:32,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427744567] [2023-11-19 07:39:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:32,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:32,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:33,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 388 [2023-11-19 07:39:33,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 315 transitions, 3331 flow. Second operand has 6 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 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 07:39:33,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:33,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 388 [2023-11-19 07:39:33,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:36,218 INFO L124 PetriNetUnfolderBase]: 11225/17818 cut-off events. [2023-11-19 07:39:36,218 INFO L125 PetriNetUnfolderBase]: For 115971/117523 co-relation queries the response was YES. [2023-11-19 07:39:36,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78526 conditions, 17818 events. 11225/17818 cut-off events. For 115971/117523 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 111941 event pairs, 1487 based on Foata normal form. 334/16949 useless extension candidates. Maximal degree in co-relation 78509. Up to 12037 conditions per place. [2023-11-19 07:39:36,433 INFO L140 encePairwiseOnDemand]: 379/388 looper letters, 280 selfloop transitions, 149 changer transitions 0/471 dead transitions. [2023-11-19 07:39:36,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 471 transitions, 5921 flow [2023-11-19 07:39:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:39:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1463 transitions. [2023-11-19 07:39:36,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6284364261168385 [2023-11-19 07:39:36,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1463 transitions. [2023-11-19 07:39:36,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1463 transitions. [2023-11-19 07:39:36,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:36,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1463 transitions. [2023-11-19 07:39:36,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.83333333333334) internal successors, (1463), 6 states have internal predecessors, (1463), 0 states have call successors, (0), 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 07:39:36,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:36,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 07:39:36,453 INFO L175 Difference]: Start difference. First operand has 108 places, 315 transitions, 3331 flow. Second operand 6 states and 1463 transitions. [2023-11-19 07:39:36,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 471 transitions, 5921 flow [2023-11-19 07:39:36,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 471 transitions, 5899 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:39:36,577 INFO L231 Difference]: Finished difference. Result has 112 places, 463 transitions, 5699 flow [2023-11-19 07:39:36,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5699, PETRI_PLACES=112, PETRI_TRANSITIONS=463} [2023-11-19 07:39:36,579 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2023-11-19 07:39:36,579 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 463 transitions, 5699 flow [2023-11-19 07:39:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 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 07:39:36,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:36,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:36,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:39:36,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread0Err2ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:36,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash -190296551, now seen corresponding path program 1 times [2023-11-19 07:39:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011912776] [2023-11-19 07:39:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:37,455 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 07:39:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011912776] [2023-11-19 07:39:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011912776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:37,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:37,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:39:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401009019] [2023-11-19 07:39:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:39:37,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:39:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:39:38,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 388 [2023-11-19 07:39:38,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 463 transitions, 5699 flow. Second operand has 9 states, 9 states have (on average 234.66666666666666) internal successors, (2112), 9 states have internal predecessors, (2112), 0 states have call successors, (0), 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 07:39:38,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:38,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 388 [2023-11-19 07:39:38,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:42,172 INFO L124 PetriNetUnfolderBase]: 11012/17784 cut-off events. [2023-11-19 07:39:42,172 INFO L125 PetriNetUnfolderBase]: For 144467/145957 co-relation queries the response was YES. [2023-11-19 07:39:42,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88190 conditions, 17784 events. 11012/17784 cut-off events. For 144467/145957 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 114305 event pairs, 1043 based on Foata normal form. 414/17130 useless extension candidates. Maximal degree in co-relation 88169. Up to 10378 conditions per place. [2023-11-19 07:39:42,365 INFO L140 encePairwiseOnDemand]: 381/388 looper letters, 487 selfloop transitions, 12 changer transitions 0/541 dead transitions. [2023-11-19 07:39:42,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 541 transitions, 7667 flow [2023-11-19 07:39:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:39:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:39:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1909 transitions. [2023-11-19 07:39:42,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6150128865979382 [2023-11-19 07:39:42,374 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1909 transitions. [2023-11-19 07:39:42,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1909 transitions. [2023-11-19 07:39:42,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:42,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1909 transitions. [2023-11-19 07:39:42,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.625) internal successors, (1909), 8 states have internal predecessors, (1909), 0 states have call successors, (0), 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 07:39:42,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 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 07:39:42,390 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 388.0) internal successors, (3492), 9 states have internal predecessors, (3492), 0 states have call successors, (0), 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 07:39:42,390 INFO L175 Difference]: Start difference. First operand has 112 places, 463 transitions, 5699 flow. Second operand 8 states and 1909 transitions. [2023-11-19 07:39:42,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 541 transitions, 7667 flow [2023-11-19 07:39:42,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 541 transitions, 7341 flow, removed 144 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:42,708 INFO L231 Difference]: Finished difference. Result has 117 places, 462 transitions, 5393 flow [2023-11-19 07:39:42,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=388, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5393, PETRI_PLACES=117, PETRI_TRANSITIONS=462} [2023-11-19 07:39:42,709 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2023-11-19 07:39:42,709 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 462 transitions, 5393 flow [2023-11-19 07:39:42,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 234.66666666666666) internal successors, (2112), 9 states have internal predecessors, (2112), 0 states have call successors, (0), 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 07:39:42,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:42,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:42,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:39:42,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread0Err3ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:39:42,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash -448487609, now seen corresponding path program 1 times [2023-11-19 07:39:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:42,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636568083] [2023-11-19 07:39:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:42,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:43,196 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 07:39:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636568083] [2023-11-19 07:39:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636568083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:43,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316930797] [2023-11-19 07:39:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:43,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 388 [2023-11-19 07:39:43,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 462 transitions, 5393 flow. Second operand has 6 states, 6 states have (on average 238.16666666666666) internal successors, (1429), 6 states have internal predecessors, (1429), 0 states have call successors, (0), 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 07:39:43,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:43,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 388 [2023-11-19 07:39:43,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand