./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-dynamic.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/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_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-dynamic.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/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_056079be-84ef-4771-b878-6cee0fb9ca28/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 e281184c6e6629633efbcea3a2283a3a54dcfd040e15fa389b71c86937ccbf2b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:43,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:43,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:56:43,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:43,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:43,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:43,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:43,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:43,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:43,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:43,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:43,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:43,247 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:43,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:43,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:43,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:43,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:43,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:43,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:43,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:43,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:43,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:43,254 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:56:43,254 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:43,255 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:43,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:43,256 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:43,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:43,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:43,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:43,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:43,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:43,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:43,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:43,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:43,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:43,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:43,262 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:43,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:43,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:43,263 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:43,264 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_056079be-84ef-4771-b878-6cee0fb9ca28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e281184c6e6629633efbcea3a2283a3a54dcfd040e15fa389b71c86937ccbf2b [2023-11-19 07:56:43,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:43,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:43,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:43,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:43,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:43,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-dynamic.i [2023-11-19 07:56:46,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:47,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:47,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/sv-benchmarks/c/pthread-race-challenges/thread-join-array-dynamic.i [2023-11-19 07:56:47,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/data/f77351d97/52d4a18808e14eaa9eab877d85632c7f/FLAGda6cd62dd [2023-11-19 07:56:47,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/data/f77351d97/52d4a18808e14eaa9eab877d85632c7f [2023-11-19 07:56:47,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:47,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:47,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:47,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:47,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:47,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:47,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b55d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47, skipping insertion in model container [2023-11-19 07:56:47,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:47,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:47,432 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:56:47,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:47,781 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:47,808 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:56:47,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:47,922 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:47,930 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:47,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47 WrapperNode [2023-11-19 07:56:47,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:47,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:47,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:47,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:47,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:47,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,001 INFO L138 Inliner]: procedures = 269, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-11-19 07:56:48,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:48,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:48,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:48,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:48,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:48,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:48,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:48,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:48,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (1/1) ... [2023-11-19 07:56:48,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:48,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:48,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:48,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:56:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:56:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:56:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:48,127 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 07:56:48,268 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:48,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:48,622 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:48,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:48,633 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:48,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:48 BoogieIcfgContainer [2023-11-19 07:56:48,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:48,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:48,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:48,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:48,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:47" (1/3) ... [2023-11-19 07:56:48,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5950d5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:48, skipping insertion in model container [2023-11-19 07:56:48,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:47" (2/3) ... [2023-11-19 07:56:48,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5950d5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:48, skipping insertion in model container [2023-11-19 07:56:48,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:48" (3/3) ... [2023-11-19 07:56:48,646 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-array-dynamic.i [2023-11-19 07:56:48,655 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:48,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:48,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:56:48,666 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:48,726 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:56:48,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,832 INFO L124 PetriNetUnfolderBase]: 6/160 cut-off events. [2023-11-19 07:56:48,834 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:48,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 160 events. 6/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-11-19 07:56:48,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,851 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:48,862 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 225 flow [2023-11-19 07:56:48,919 INFO L124 PetriNetUnfolderBase]: 6/160 cut-off events. [2023-11-19 07:56:48,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:48,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 160 events. 6/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2023-11-19 07:56:48,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 1740 [2023-11-19 07:56:54,179 INFO L134 LiptonReduction]: Checked pairs total: 2171 [2023-11-19 07:56:54,179 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-19 07:56:54,196 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:54,203 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;@510e03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:54,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:56:54,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:54,206 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:56:54,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:54,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:54,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:54,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:54,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash 12350, now seen corresponding path program 1 times [2023-11-19 07:56:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:54,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081663726] [2023-11-19 07:56:54,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:54,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:54,412 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 07:56:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081663726] [2023-11-19 07:56:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081663726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018111804] [2023-11-19 07:56:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:54,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 210 [2023-11-19 07:56:54,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 07:56:54,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:54,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 210 [2023-11-19 07:56:54,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:54,517 INFO L124 PetriNetUnfolderBase]: 19/69 cut-off events. [2023-11-19 07:56:54,518 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:54,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 69 events. 19/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 235 event pairs, 18 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 101. Up to 55 conditions per place. [2023-11-19 07:56:54,520 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 13 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-19 07:56:54,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 67 flow [2023-11-19 07:56:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:56:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2023-11-19 07:56:54,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-19 07:56:54,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 225 transitions. [2023-11-19 07:56:54,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 225 transitions. [2023-11-19 07:56:54,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:54,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 225 transitions. [2023-11-19 07:56:54,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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 07:56:54,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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 07:56:54,552 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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 07:56:54,554 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 49 flow. Second operand 2 states and 225 transitions. [2023-11-19 07:56:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 67 flow [2023-11-19 07:56:54,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 67 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:54,559 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 41 flow [2023-11-19 07:56:54,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=41, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2023-11-19 07:56:54,568 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-11-19 07:56:54,568 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 41 flow [2023-11-19 07:56:54,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 07:56:54,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:54,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:56:54,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:54,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:54,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 11855336, now seen corresponding path program 1 times [2023-11-19 07:56:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:54,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439851622] [2023-11-19 07:56:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:54,706 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 07:56:54,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:54,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439851622] [2023-11-19 07:56:54,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439851622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:54,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:54,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:54,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235854383] [2023-11-19 07:56:54,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:54,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:54,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 210 [2023-11-19 07:56:54,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:56:54,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:54,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 210 [2023-11-19 07:56:54,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:54,792 INFO L124 PetriNetUnfolderBase]: 24/82 cut-off events. [2023-11-19 07:56:54,792 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:54,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 82 events. 24/82 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 13 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 157. Up to 50 conditions per place. [2023-11-19 07:56:54,796 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 14 selfloop transitions, 3 changer transitions 3/22 dead transitions. [2023-11-19 07:56:54,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 91 flow [2023-11-19 07:56:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-11-19 07:56:54,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095238095238095 [2023-11-19 07:56:54,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-11-19 07:56:54,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-11-19 07:56:54,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:54,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-11-19 07:56:54,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 07:56:54,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 07:56:54,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 07:56:54,823 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 41 flow. Second operand 3 states and 321 transitions. [2023-11-19 07:56:54,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 91 flow [2023-11-19 07:56:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:54,826 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 56 flow [2023-11-19 07:56:54,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-11-19 07:56:54,828 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-11-19 07:56:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 56 flow [2023-11-19 07:56:54,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 07:56:54,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:54,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:56:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:54,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:54,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1472376656, now seen corresponding path program 1 times [2023-11-19 07:56:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88664942] [2023-11-19 07:56:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:54,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:55,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:55,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:55,004 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-19 07:56:55,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-19 07:56:55,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-19 07:56:55,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-19 07:56:55,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-19 07:56:55,008 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-19 07:56:55,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-19 07:56:55,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-19 07:56:55,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:55,013 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:56:55,016 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:56:55,016 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:56:55,048 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:56:55,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,115 INFO L124 PetriNetUnfolderBase]: 11/282 cut-off events. [2023-11-19 07:56:55,115 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 282 events. 11/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 666 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-11-19 07:56:55,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,120 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:55,120 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 126 transitions, 268 flow [2023-11-19 07:56:55,161 INFO L124 PetriNetUnfolderBase]: 11/282 cut-off events. [2023-11-19 07:56:55,161 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:55,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 282 events. 11/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 666 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-11-19 07:56:55,170 INFO L119 LiptonReduction]: Number of co-enabled transitions 4320 [2023-11-19 07:56:59,623 INFO L134 LiptonReduction]: Checked pairs total: 7761 [2023-11-19 07:56:59,624 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-19 07:56:59,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:59,628 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;@510e03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:59,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:56:59,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:59,630 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:56:59,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:59,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:59,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:59,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:59,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 20445, now seen corresponding path program 1 times [2023-11-19 07:56:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:59,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365397083] [2023-11-19 07:56:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,653 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 07:56:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:59,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365397083] [2023-11-19 07:56:59,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365397083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:59,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:59,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507878872] [2023-11-19 07:56:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:59,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:59,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 234 [2023-11-19 07:56:59,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 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 07:56:59,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:59,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 234 [2023-11-19 07:56:59,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:59,809 INFO L124 PetriNetUnfolderBase]: 382/792 cut-off events. [2023-11-19 07:56:59,809 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:56:59,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 792 events. 382/792 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4100 event pairs, 374 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 630. Up to 673 conditions per place. [2023-11-19 07:56:59,819 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 21 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-19 07:56:59,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 116 flow [2023-11-19 07:56:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:56:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-11-19 07:56:59,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.561965811965812 [2023-11-19 07:56:59,821 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-11-19 07:56:59,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-11-19 07:56:59,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:59,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-11-19 07:56:59,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 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 07:56:59,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 07:56:59,827 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 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 07:56:59,827 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 82 flow. Second operand 2 states and 263 transitions. [2023-11-19 07:56:59,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 116 flow [2023-11-19 07:56:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:59,831 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 74 flow [2023-11-19 07:56:59,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-11-19 07:56:59,835 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-11-19 07:56:59,835 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 74 flow [2023-11-19 07:56:59,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 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 07:56:59,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:59,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:56:59,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:59,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:59,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:59,837 INFO L85 PathProgramCache]: Analyzing trace with hash 19644592, now seen corresponding path program 1 times [2023-11-19 07:56:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884984752] [2023-11-19 07:56:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,904 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 07:56:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:59,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884984752] [2023-11-19 07:56:59,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884984752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543147676] [2023-11-19 07:56:59,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:59,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:59,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:59,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:59,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 234 [2023-11-19 07:56:59,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 07:56:59,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:59,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 234 [2023-11-19 07:56:59,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:00,131 INFO L124 PetriNetUnfolderBase]: 574/1132 cut-off events. [2023-11-19 07:57:00,132 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:57:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1132 events. 574/1132 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6180 event pairs, 350 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 2191. Up to 736 conditions per place. [2023-11-19 07:57:00,140 INFO L140 encePairwiseOnDemand]: 229/234 looper letters, 30 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-11-19 07:57:00,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 164 flow [2023-11-19 07:57:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-11-19 07:57:00,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-11-19 07:57:00,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-11-19 07:57:00,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-11-19 07:57:00,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:00,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-11-19 07:57:00,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 07:57:00,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:57:00,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:57:00,149 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 74 flow. Second operand 3 states and 377 transitions. [2023-11-19 07:57:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 164 flow [2023-11-19 07:57:00,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:00,151 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 104 flow [2023-11-19 07:57:00,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-19 07:57:00,152 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-19 07:57:00,153 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 104 flow [2023-11-19 07:57:00,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 07:57:00,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:00,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:00,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:57:00,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1655234422, now seen corresponding path program 1 times [2023-11-19 07:57:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495398363] [2023-11-19 07:57:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,193 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 07:57:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495398363] [2023-11-19 07:57:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495398363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752446746] [2023-11-19 07:57:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:00,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 234 [2023-11-19 07:57:00,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 07:57:00,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:00,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 234 [2023-11-19 07:57:00,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:00,441 INFO L124 PetriNetUnfolderBase]: 643/1292 cut-off events. [2023-11-19 07:57:00,441 INFO L125 PetriNetUnfolderBase]: For 357/367 co-relation queries the response was YES. [2023-11-19 07:57:00,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2827 conditions, 1292 events. 643/1292 cut-off events. For 357/367 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7656 event pairs, 370 based on Foata normal form. 0/1181 useless extension candidates. Maximal degree in co-relation 2820. Up to 837 conditions per place. [2023-11-19 07:57:00,453 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 33 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-11-19 07:57:00,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 234 flow [2023-11-19 07:57:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-11-19 07:57:00,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327635327635327 [2023-11-19 07:57:00,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-11-19 07:57:00,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-11-19 07:57:00,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:00,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-11-19 07:57:00,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 07:57:00,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:57:00,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:57:00,461 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 104 flow. Second operand 3 states and 374 transitions. [2023-11-19 07:57:00,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 234 flow [2023-11-19 07:57:00,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:00,468 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 152 flow [2023-11-19 07:57:00,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-19 07:57:00,469 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-19 07:57:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 152 flow [2023-11-19 07:57:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 07:57:00,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:00,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:00,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:57:00,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1011210458, now seen corresponding path program 1 times [2023-11-19 07:57:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306079452] [2023-11-19 07:57:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306079452] [2023-11-19 07:57:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306079452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945135013] [2023-11-19 07:57:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:00,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:00,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:00,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:00,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945135013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:57:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024305173] [2023-11-19 07:57:00,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:00,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:00,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 234 [2023-11-19 07:57:00,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 152 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 07:57:00,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:00,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 234 [2023-11-19 07:57:00,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:01,372 INFO L124 PetriNetUnfolderBase]: 349/738 cut-off events. [2023-11-19 07:57:01,372 INFO L125 PetriNetUnfolderBase]: For 632/646 co-relation queries the response was YES. [2023-11-19 07:57:01,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 738 events. 349/738 cut-off events. For 632/646 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3684 event pairs, 73 based on Foata normal form. 44/735 useless extension candidates. Maximal degree in co-relation 1843. Up to 277 conditions per place. [2023-11-19 07:57:01,378 INFO L140 encePairwiseOnDemand]: 226/234 looper letters, 53 selfloop transitions, 7 changer transitions 27/96 dead transitions. [2023-11-19 07:57:01,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 96 transitions, 554 flow [2023-11-19 07:57:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:57:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:57:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1027 transitions. [2023-11-19 07:57:01,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2023-11-19 07:57:01,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1027 transitions. [2023-11-19 07:57:01,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1027 transitions. [2023-11-19 07:57:01,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:01,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1027 transitions. [2023-11-19 07:57:01,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.11111111111111) internal successors, (1027), 9 states have internal predecessors, (1027), 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 07:57:01,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 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 07:57:01,397 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 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 07:57:01,397 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 152 flow. Second operand 9 states and 1027 transitions. [2023-11-19 07:57:01,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 96 transitions, 554 flow [2023-11-19 07:57:01,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 96 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:01,405 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 175 flow [2023-11-19 07:57:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-19 07:57:01,407 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-19 07:57:01,407 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 175 flow [2023-11-19 07:57:01,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 07:57:01,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:01,408 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:57:01,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:01,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:01,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:57:01,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -477305936, now seen corresponding path program 1 times [2023-11-19 07:57:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:01,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839327974] [2023-11-19 07:57:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:01,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:01,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:01,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:01,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:01,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 07:57:01,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 07:57:01,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 07:57:01,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 07:57:01,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 07:57:01,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 07:57:01,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 07:57:01,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 07:57:01,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 07:57:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:57:01,723 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:57:01,723 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:01,724 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:57:01,748 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:57:01,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,828 INFO L124 PetriNetUnfolderBase]: 21/491 cut-off events. [2023-11-19 07:57:01,828 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:57:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 491 events. 21/491 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1456 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-11-19 07:57:01,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:01,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 143 transitions, 313 flow [2023-11-19 07:57:01,922 INFO L124 PetriNetUnfolderBase]: 21/491 cut-off events. [2023-11-19 07:57:01,922 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:57:01,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 491 events. 21/491 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1456 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-11-19 07:57:01,936 INFO L119 LiptonReduction]: Number of co-enabled transitions 7290 [2023-11-19 07:57:06,799 INFO L134 LiptonReduction]: Checked pairs total: 15187 [2023-11-19 07:57:06,802 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-19 07:57:06,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:06,805 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;@510e03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:06,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:57:06,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:06,807 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-19 07:57:06,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:06,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:06,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:57:06,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:06,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash 29370, now seen corresponding path program 1 times [2023-11-19 07:57:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309101462] [2023-11-19 07:57:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:06,827 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 07:57:06,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309101462] [2023-11-19 07:57:06,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309101462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:06,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:06,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002237558] [2023-11-19 07:57:06,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:06,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:06,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:06,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 262 [2023-11-19 07:57:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 135.0) internal successors, (270), 2 states have internal predecessors, (270), 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 07:57:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:06,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 262 [2023-11-19 07:57:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:07,624 INFO L124 PetriNetUnfolderBase]: 4003/6542 cut-off events. [2023-11-19 07:57:07,624 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2023-11-19 07:57:07,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12757 conditions, 6542 events. 4003/6542 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 40334 event pairs, 3954 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 1727. Up to 5941 conditions per place. [2023-11-19 07:57:07,720 INFO L140 encePairwiseOnDemand]: 258/262 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-11-19 07:57:07,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 157 flow [2023-11-19 07:57:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 300 transitions. [2023-11-19 07:57:07,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725190839694656 [2023-11-19 07:57:07,723 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 300 transitions. [2023-11-19 07:57:07,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 300 transitions. [2023-11-19 07:57:07,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:07,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 300 transitions. [2023-11-19 07:57:07,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 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 07:57:07,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 07:57:07,727 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 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 07:57:07,727 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 109 flow. Second operand 2 states and 300 transitions. [2023-11-19 07:57:07,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 157 flow [2023-11-19 07:57:07,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:07,730 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 101 flow [2023-11-19 07:57:07,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=101, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-19 07:57:07,731 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-19 07:57:07,732 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 101 flow [2023-11-19 07:57:07,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.0) internal successors, (270), 2 states have internal predecessors, (270), 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 07:57:07,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:07,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:57:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:57:07,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:07,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 28229487, now seen corresponding path program 1 times [2023-11-19 07:57:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:07,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651061093] [2023-11-19 07:57:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:07,770 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 07:57:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651061093] [2023-11-19 07:57:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651061093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:07,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:07,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400812140] [2023-11-19 07:57:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:07,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:07,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 262 [2023-11-19 07:57:07,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 07:57:07,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:07,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 262 [2023-11-19 07:57:07,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:09,260 INFO L124 PetriNetUnfolderBase]: 7618/11966 cut-off events. [2023-11-19 07:57:09,260 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-19 07:57:09,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23635 conditions, 11966 events. 7618/11966 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 74612 event pairs, 4897 based on Foata normal form. 0/11079 useless extension candidates. Maximal degree in co-relation 23629. Up to 8281 conditions per place. [2023-11-19 07:57:09,360 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 43 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-19 07:57:09,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 231 flow [2023-11-19 07:57:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:57:09,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508905852417303 [2023-11-19 07:57:09,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:57:09,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:57:09,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:09,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:57:09,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 07:57:09,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:09,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:09,370 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 101 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:57:09,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 231 flow [2023-11-19 07:57:09,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:09,374 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 139 flow [2023-11-19 07:57:09,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-19 07:57:09,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-19 07:57:09,378 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 139 flow [2023-11-19 07:57:09,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 07:57:09,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:09,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:09,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:09,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:09,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash -214735850, now seen corresponding path program 1 times [2023-11-19 07:57:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340758542] [2023-11-19 07:57:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,419 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 07:57:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:09,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340758542] [2023-11-19 07:57:09,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340758542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:09,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:09,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:09,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377778701] [2023-11-19 07:57:09,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:09,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:09,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 262 [2023-11-19 07:57:09,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 07:57:09,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:09,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 262 [2023-11-19 07:57:09,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:11,086 INFO L124 PetriNetUnfolderBase]: 8140/13055 cut-off events. [2023-11-19 07:57:11,087 INFO L125 PetriNetUnfolderBase]: For 3385/3385 co-relation queries the response was YES. [2023-11-19 07:57:11,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29141 conditions, 13055 events. 8140/13055 cut-off events. For 3385/3385 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 86968 event pairs, 6157 based on Foata normal form. 0/12134 useless extension candidates. Maximal degree in co-relation 29133. Up to 10670 conditions per place. [2023-11-19 07:57:11,178 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 49 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-19 07:57:11,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 335 flow [2023-11-19 07:57:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-19 07:57:11,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483460559796438 [2023-11-19 07:57:11,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-19 07:57:11,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-19 07:57:11,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:11,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-19 07:57:11,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 07:57:11,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:11,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:11,188 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 139 flow. Second operand 3 states and 431 transitions. [2023-11-19 07:57:11,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 335 flow [2023-11-19 07:57:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:11,257 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 189 flow [2023-11-19 07:57:11,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-19 07:57:11,259 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-19 07:57:11,259 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 189 flow [2023-11-19 07:57:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 07:57:11,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:11,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:11,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1264631312, now seen corresponding path program 1 times [2023-11-19 07:57:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672521409] [2023-11-19 07:57:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672521409] [2023-11-19 07:57:11,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672521409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:11,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475332296] [2023-11-19 07:57:11,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:11,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 262 [2023-11-19 07:57:11,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 07:57:11,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:11,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 262 [2023-11-19 07:57:11,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,160 INFO L124 PetriNetUnfolderBase]: 10329/16338 cut-off events. [2023-11-19 07:57:13,161 INFO L125 PetriNetUnfolderBase]: For 9072/9327 co-relation queries the response was YES. [2023-11-19 07:57:13,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39831 conditions, 16338 events. 10329/16338 cut-off events. For 9072/9327 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 112187 event pairs, 5912 based on Foata normal form. 0/14923 useless extension candidates. Maximal degree in co-relation 39822. Up to 11665 conditions per place. [2023-11-19 07:57:13,259 INFO L140 encePairwiseOnDemand]: 255/262 looper letters, 53 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2023-11-19 07:57:13,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 434 flow [2023-11-19 07:57:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-19 07:57:13,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483460559796438 [2023-11-19 07:57:13,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-19 07:57:13,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-19 07:57:13,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-19 07:57:13,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 07:57:13,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:13,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:13,268 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 189 flow. Second operand 3 states and 431 transitions. [2023-11-19 07:57:13,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 434 flow [2023-11-19 07:57:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:13,351 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 311 flow [2023-11-19 07:57:13,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-11-19 07:57:13,353 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-19 07:57:13,353 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 311 flow [2023-11-19 07:57:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 07:57:13,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:13,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:13,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 656062150, now seen corresponding path program 1 times [2023-11-19 07:57:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125680830] [2023-11-19 07:57:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125680830] [2023-11-19 07:57:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125680830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442189450] [2023-11-19 07:57:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:13,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:13,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:13,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442189450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:13,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:13,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:57:13,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044826489] [2023-11-19 07:57:13,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:13,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 262 [2023-11-19 07:57:13,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 311 flow. Second operand has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 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 07:57:13,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:13,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 262 [2023-11-19 07:57:13,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:15,219 INFO L124 PetriNetUnfolderBase]: 5378/8912 cut-off events. [2023-11-19 07:57:15,219 INFO L125 PetriNetUnfolderBase]: For 11097/12353 co-relation queries the response was YES. [2023-11-19 07:57:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23974 conditions, 8912 events. 5378/8912 cut-off events. For 11097/12353 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 58296 event pairs, 1135 based on Foata normal form. 670/9069 useless extension candidates. Maximal degree in co-relation 23964. Up to 2939 conditions per place. [2023-11-19 07:57:15,273 INFO L140 encePairwiseOnDemand]: 254/262 looper letters, 132 selfloop transitions, 8 changer transitions 4/157 dead transitions. [2023-11-19 07:57:15,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 157 transitions, 1060 flow [2023-11-19 07:57:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:57:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:57:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1189 transitions. [2023-11-19 07:57:15,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042408821034775 [2023-11-19 07:57:15,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1189 transitions. [2023-11-19 07:57:15,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1189 transitions. [2023-11-19 07:57:15,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:15,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1189 transitions. [2023-11-19 07:57:15,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.11111111111111) internal successors, (1189), 9 states have internal predecessors, (1189), 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 07:57:15,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 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 07:57:15,294 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 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 07:57:15,294 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 311 flow. Second operand 9 states and 1189 transitions. [2023-11-19 07:57:15,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 157 transitions, 1060 flow [2023-11-19 07:57:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 157 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:15,319 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 327 flow [2023-11-19 07:57:15,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-11-19 07:57:15,320 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2023-11-19 07:57:15,320 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 327 flow [2023-11-19 07:57:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 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 07:57:15,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:15,322 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:15,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:15,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056079be-84ef-4771-b878-6cee0fb9ca28/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:15,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1685421084, now seen corresponding path program 1 times [2023-11-19 07:57:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031654056] [2023-11-19 07:57:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031654056] [2023-11-19 07:57:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031654056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676725821] [2023-11-19 07:57:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:15,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 262 [2023-11-19 07:57:15,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 07:57:15,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:15,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 262 [2023-11-19 07:57:15,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:16,021 INFO L124 PetriNetUnfolderBase]: 840/2011 cut-off events. [2023-11-19 07:57:16,021 INFO L125 PetriNetUnfolderBase]: For 2903/2913 co-relation queries the response was YES. [2023-11-19 07:57:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6261 conditions, 2011 events. 840/2011 cut-off events. For 2903/2913 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13938 event pairs, 171 based on Foata normal form. 407/2366 useless extension candidates. Maximal degree in co-relation 6247. Up to 1348 conditions per place. [2023-11-19 07:57:16,030 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 47 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-11-19 07:57:16,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 440 flow [2023-11-19 07:57:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-11-19 07:57:16,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539440203562341 [2023-11-19 07:57:16,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-11-19 07:57:16,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-11-19 07:57:16,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:16,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-11-19 07:57:16,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 07:57:16,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:16,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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 07:57:16,039 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 327 flow. Second operand 3 states and 424 transitions. [2023-11-19 07:57:16,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 440 flow [2023-11-19 07:57:16,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 426 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:16,049 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 249 flow [2023-11-19 07:57:16,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-19 07:57:16,050 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-19 07:57:16,050 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 249 flow [2023-11-19 07:57:16,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 07:57:16,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:16,051 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:57:16,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:57:16,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:16,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 71729553, now seen corresponding path program 1 times [2023-11-19 07:57:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:16,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670404729] [2023-11-19 07:57:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:16,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:16,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:16,124 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:16,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:57:16,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 07:57:16,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 07:57:16,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 07:57:16,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 07:57:16,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 07:57:16,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 07:57:16,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 07:57:16,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 07:57:16,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 07:57:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:57:16,127 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:16,128 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:16,128 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:57:16,155 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:57:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,367 INFO L124 PetriNetUnfolderBase]: 43/876 cut-off events. [2023-11-19 07:57:16,368 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:57:16,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 876 events. 43/876 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3524 event pairs, 6 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 511. Up to 32 conditions per place. [2023-11-19 07:57:16,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:16,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 160 transitions, 360 flow [2023-11-19 07:57:16,563 INFO L124 PetriNetUnfolderBase]: 43/876 cut-off events. [2023-11-19 07:57:16,563 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:57:16,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 876 events. 43/876 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3524 event pairs, 6 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 511. Up to 32 conditions per place. [2023-11-19 07:57:16,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 10800 [2023-11-19 07:57:21,381 INFO L134 LiptonReduction]: Checked pairs total: 23615 [2023-11-19 07:57:21,381 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-11-19 07:57:21,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:21,384 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;@510e03a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:21,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:57:21,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:21,385 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:57:21,385 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:21,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:21,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:57:21,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:57:21,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 39064, now seen corresponding path program 1 times [2023-11-19 07:57:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930467650] [2023-11-19 07:57:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,399 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 07:57:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930467650] [2023-11-19 07:57:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930467650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:21,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830267266] [2023-11-19 07:57:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:21,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:21,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 286 [2023-11-19 07:57:21,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 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 07:57:21,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:21,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 286 [2023-11-19 07:57:21,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:26,214 INFO L124 PetriNetUnfolderBase]: 31319/48454 cut-off events. [2023-11-19 07:57:26,215 INFO L125 PetriNetUnfolderBase]: For 4852/4852 co-relation queries the response was YES. [2023-11-19 07:57:26,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93223 conditions, 48454 events. 31319/48454 cut-off events. For 4852/4852 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 362651 event pairs, 30968 based on Foata normal form. 0/44995 useless extension candidates. Maximal degree in co-relation 13209. Up to 42608 conditions per place. [2023-11-19 07:57:26,548 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 34 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-11-19 07:57:26,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 198 flow [2023-11-19 07:57:26,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 336 transitions. [2023-11-19 07:57:26,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5874125874125874 [2023-11-19 07:57:26,550 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 336 transitions. [2023-11-19 07:57:26,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 336 transitions. [2023-11-19 07:57:26,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:26,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 336 transitions. [2023-11-19 07:57:26,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 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 07:57:26,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 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 07:57:26,554 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 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 07:57:26,555 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 2 states and 336 transitions. [2023-11-19 07:57:26,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 198 flow [2023-11-19 07:57:26,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:26,557 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 130 flow [2023-11-19 07:57:26,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-19 07:57:26,558 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-19 07:57:26,558 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 130 flow [2023-11-19 07:57:26,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.0) internal successors, (300), 2 states have internal predecessors, (300), 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 07:57:26,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:26,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:57:26,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:57:26,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:57:26,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash 37559960, now seen corresponding path program 1 times [2023-11-19 07:57:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:26,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283924912] [2023-11-19 07:57:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:26,579 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 07:57:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283924912] [2023-11-19 07:57:26,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283924912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:26,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:26,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032292376] [2023-11-19 07:57:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:26,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 286 [2023-11-19 07:57:26,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:57:26,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:26,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 286 [2023-11-19 07:57:26,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:35,215 INFO L124 PetriNetUnfolderBase]: 73069/103628 cut-off events. [2023-11-19 07:57:35,215 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2023-11-19 07:57:35,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205674 conditions, 103628 events. 73069/103628 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 2367. Compared 705013 event pairs, 48108 based on Foata normal form. 0/97521 useless extension candidates. Maximal degree in co-relation 205667. Up to 73612 conditions per place. [2023-11-19 07:57:35,608 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 54 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-11-19 07:57:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 294 flow [2023-11-19 07:57:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-11-19 07:57:35,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675990675990676 [2023-11-19 07:57:35,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-11-19 07:57:35,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-11-19 07:57:35,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:35,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-11-19 07:57:35,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 07:57:35,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 07:57:35,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 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 07:57:35,617 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 130 flow. Second operand 3 states and 487 transitions. [2023-11-19 07:57:35,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 294 flow [2023-11-19 07:57:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:35,620 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 176 flow [2023-11-19 07:57:35,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-19 07:57:35,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-19 07:57:35,621 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 176 flow [2023-11-19 07:57:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 07:57:35,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:35,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:35,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:57:35,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:57:35,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1633763326, now seen corresponding path program 1 times [2023-11-19 07:57:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317415179] [2023-11-19 07:57:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:35,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:35,656 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 07:57:35,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:35,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317415179] [2023-11-19 07:57:35,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317415179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:35,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:35,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:35,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363762100] [2023-11-19 07:57:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:35,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:35,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 286 [2023-11-19 07:57:35,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 07:57:35,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:35,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 286 [2023-11-19 07:57:35,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand