./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/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_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/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_8f8a057a-f1fc-4c5d-8624-87af9aa33042/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 e59f443204e7aefe0ca3d3f3de602e655d8cad2a85fca6022b51e9f5ca070bcf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:23,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:23,620 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:54:23,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:23,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:23,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:23,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:23,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:23,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:23,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:23,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:23,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:23,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:23,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:23,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:23,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:23,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:23,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:23,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:23,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:23,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:23,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:23,663 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:54:23,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:23,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:23,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:23,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:23,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:23,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:23,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:23,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:23,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:23,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:23,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:23,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:23,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:23,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:23,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:23,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:23,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:23,671 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:23,672 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_8f8a057a-f1fc-4c5d-8624-87af9aa33042/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59f443204e7aefe0ca3d3f3de602e655d8cad2a85fca6022b51e9f5ca070bcf [2023-11-19 07:54:23,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:23,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:23,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:23,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:23,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:23,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2023-11-19 07:54:27,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:27,391 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:27,392 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2023-11-19 07:54:27,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/data/8a2c32d35/60b39e3cd7f94d719680428c78d804b0/FLAG0a4c10514 [2023-11-19 07:54:27,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/data/8a2c32d35/60b39e3cd7f94d719680428c78d804b0 [2023-11-19 07:54:27,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:27,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:27,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:27,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:27,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:27,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:27" (1/1) ... [2023-11-19 07:54:27,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddbf636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:27, skipping insertion in model container [2023-11-19 07:54:27,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:27" (1/1) ... [2023-11-19 07:54:27,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:27,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:27,888 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:27,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:28,049 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:28,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28 WrapperNode [2023-11-19 07:54:28,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:28,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:28,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:28,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:28,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,123 INFO L138 Inliner]: procedures = 164, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2023-11-19 07:54:28,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:28,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:28,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:28,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:28,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:28,156 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:28,156 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:28,156 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:28,157 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (1/1) ... [2023-11-19 07:54:28,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:28,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:28,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8a057a-f1fc-4c5d-8624-87af9aa33042/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:28,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:54:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:54:28,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:54:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:54:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:28,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:28,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:28,251 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 07:54:28,437 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:28,440 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:28,714 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:28,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:28,724 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:54:28,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:28 BoogieIcfgContainer [2023-11-19 07:54:28,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:28,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:28,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:28,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:28,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:27" (1/3) ... [2023-11-19 07:54:28,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505753d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:28, skipping insertion in model container [2023-11-19 07:54:28,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:28" (2/3) ... [2023-11-19 07:54:28,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505753d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:28, skipping insertion in model container [2023-11-19 07:54:28,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:28" (3/3) ... [2023-11-19 07:54:28,738 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2023-11-19 07:54:28,747 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:54:28,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:28,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:54:28,760 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:28,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:28,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:28,954 INFO L124 PetriNetUnfolderBase]: 8/115 cut-off events. [2023-11-19 07:54:28,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:28,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 115 events. 8/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-11-19 07:54:28,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:28,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:28,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:28,980 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:28,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 212 flow [2023-11-19 07:54:29,019 INFO L124 PetriNetUnfolderBase]: 8/115 cut-off events. [2023-11-19 07:54:29,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:29,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 115 events. 8/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-11-19 07:54:29,029 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-11-19 07:54:33,834 INFO L134 LiptonReduction]: Checked pairs total: 1909 [2023-11-19 07:54:33,834 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-11-19 07:54:33,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:33,858 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;@16e53e92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:33,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:54:33,865 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:33,866 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-19 07:54:33,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:33,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:33,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:54:33,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:54:33,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash 431443981, now seen corresponding path program 1 times [2023-11-19 07:54:33,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:33,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406949538] [2023-11-19 07:54:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:33,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:34,145 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 07:54:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406949538] [2023-11-19 07:54:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406949538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:34,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760124453] [2023-11-19 07:54:34,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:34,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:34,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:34,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 225 [2023-11-19 07:54:34,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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 07:54:34,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:34,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 225 [2023-11-19 07:54:34,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:34,268 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-19 07:54:34,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:34,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 07:54:34,269 INFO L140 encePairwiseOnDemand]: 220/225 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 07:54:34,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 07:54:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2023-11-19 07:54:34,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2023-11-19 07:54:34,294 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2023-11-19 07:54:34,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2023-11-19 07:54:34,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:34,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2023-11-19 07:54:34,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 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 07:54:34,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 07:54:34,310 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 07:54:34,312 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 2 states and 204 transitions. [2023-11-19 07:54:34,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 07:54:34,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:34,317 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 07:54:34,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 07:54:34,323 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -4 predicate places. [2023-11-19 07:54:34,323 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 07:54:34,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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 07:54:34,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:34,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:54:34,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:34,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:54:34,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 489773479, now seen corresponding path program 1 times [2023-11-19 07:54:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326781643] [2023-11-19 07:54:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:34,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:54:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:34,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:54:34,398 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:54:34,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 07:54:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 07:54:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 07:54:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 07:54:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 07:54:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 07:54:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 07:54:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 07:54:34,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 07:54:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:34,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:54:34,407 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:54:34,407 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:54:34,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:34,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,531 INFO L124 PetriNetUnfolderBase]: 15/193 cut-off events. [2023-11-19 07:54:34,531 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:34,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 193 events. 15/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 344 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 141. Up to 6 conditions per place. [2023-11-19 07:54:34,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:34,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 169 transitions, 348 flow [2023-11-19 07:54:34,592 INFO L124 PetriNetUnfolderBase]: 15/193 cut-off events. [2023-11-19 07:54:34,593 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:34,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 193 events. 15/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 344 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 141. Up to 6 conditions per place. [2023-11-19 07:54:34,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 11904 [2023-11-19 07:54:37,958 INFO L134 LiptonReduction]: Checked pairs total: 36007 [2023-11-19 07:54:37,958 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-19 07:54:37,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:37,968 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;@16e53e92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:37,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:54:37,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:37,978 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 07:54:37,979 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:37,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:37,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:37,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 07:54:37,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1803933055, now seen corresponding path program 1 times [2023-11-19 07:54:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:37,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539233527] [2023-11-19 07:54:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:38,534 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 07:54:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539233527] [2023-11-19 07:54:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539233527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:38,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346405292] [2023-11-19 07:54:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:38,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-11-19 07:54:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 07:54:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:38,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-11-19 07:54:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:39,157 INFO L124 PetriNetUnfolderBase]: 343/907 cut-off events. [2023-11-19 07:54:39,157 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-19 07:54:39,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 907 events. 343/907 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5702 event pairs, 69 based on Foata normal form. 56/806 useless extension candidates. Maximal degree in co-relation 996. Up to 248 conditions per place. [2023-11-19 07:54:39,166 INFO L140 encePairwiseOnDemand]: 303/312 looper letters, 60 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-19 07:54:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 352 flow [2023-11-19 07:54:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2023-11-19 07:54:39,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49946581196581197 [2023-11-19 07:54:39,177 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 935 transitions. [2023-11-19 07:54:39,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 935 transitions. [2023-11-19 07:54:39,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:39,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 935 transitions. [2023-11-19 07:54:39,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.83333333333334) internal successors, (935), 6 states have internal predecessors, (935), 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 07:54:39,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:54:39,195 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 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 07:54:39,195 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 130 flow. Second operand 6 states and 935 transitions. [2023-11-19 07:54:39,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 352 flow [2023-11-19 07:54:39,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:39,199 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 132 flow [2023-11-19 07:54:39,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-11-19 07:54:39,200 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-11-19 07:54:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 132 flow [2023-11-19 07:54:39,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 07:54:39,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:39,202 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:54:39,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:39,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 07:54:39,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:39,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1290158960, now seen corresponding path program 1 times [2023-11-19 07:54:39,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675411118] [2023-11-19 07:54:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:39,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:54:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:39,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:54:39,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:54:39,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 07:54:39,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-19 07:54:39,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-19 07:54:39,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-19 07:54:39,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-19 07:54:39,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-19 07:54:39,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-19 07:54:39,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-19 07:54:39,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-19 07:54:39,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-19 07:54:39,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-19 07:54:39,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-19 07:54:39,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-19 07:54:39,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:39,259 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:54:39,260 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:54:39,261 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:54:39,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:39,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,386 INFO L124 PetriNetUnfolderBase]: 22/271 cut-off events. [2023-11-19 07:54:39,387 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:54:39,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 271 events. 22/271 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 709 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 205. Up to 8 conditions per place. [2023-11-19 07:54:39,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,394 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:39,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,394 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 234 transitions, 486 flow [2023-11-19 07:54:39,445 INFO L124 PetriNetUnfolderBase]: 22/271 cut-off events. [2023-11-19 07:54:39,446 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:54:39,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 271 events. 22/271 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 709 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 205. Up to 8 conditions per place. [2023-11-19 07:54:39,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 30336 [2023-11-19 07:54:43,368 INFO L134 LiptonReduction]: Checked pairs total: 95082 [2023-11-19 07:54:43,368 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-11-19 07:54:43,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:43,371 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;@16e53e92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:43,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:54:43,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:43,376 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 07:54:43,376 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:54:43,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:43,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:43,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:54:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash 418566445, now seen corresponding path program 1 times [2023-11-19 07:54:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185841613] [2023-11-19 07:54:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:43,663 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 07:54:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185841613] [2023-11-19 07:54:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185841613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166063208] [2023-11-19 07:54:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:43,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:43,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 431 [2023-11-19 07:54:43,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 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 07:54:43,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:43,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 431 [2023-11-19 07:54:43,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:45,530 INFO L124 PetriNetUnfolderBase]: 5159/10271 cut-off events. [2023-11-19 07:54:45,531 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-11-19 07:54:45,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17723 conditions, 10271 events. 5159/10271 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 85949 event pairs, 1131 based on Foata normal form. 923/9467 useless extension candidates. Maximal degree in co-relation 2906. Up to 3122 conditions per place. [2023-11-19 07:54:45,644 INFO L140 encePairwiseOnDemand]: 421/431 looper letters, 110 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2023-11-19 07:54:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 161 transitions, 618 flow [2023-11-19 07:54:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2023-11-19 07:54:45,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197215777262181 [2023-11-19 07:54:45,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1344 transitions. [2023-11-19 07:54:45,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1344 transitions. [2023-11-19 07:54:45,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:45,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1344 transitions. [2023-11-19 07:54:45,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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 07:54:45,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 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 07:54:45,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 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 07:54:45,668 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 190 flow. Second operand 6 states and 1344 transitions. [2023-11-19 07:54:45,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 161 transitions, 618 flow [2023-11-19 07:54:45,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 161 transitions, 608 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:45,678 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 188 flow [2023-11-19 07:54:45,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2023-11-19 07:54:45,680 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-11-19 07:54:45,681 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 188 flow [2023-11-19 07:54:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 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 07:54:45,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:45,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:45,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:54:45,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1229348401, now seen corresponding path program 1 times [2023-11-19 07:54:45,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55990587] [2023-11-19 07:54:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:45,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:45,726 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 07:54:45,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55990587] [2023-11-19 07:54:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55990587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:45,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:45,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534839332] [2023-11-19 07:54:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:45,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:45,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:45,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 431 [2023-11-19 07:54:45,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 07:54:45,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:45,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 431 [2023-11-19 07:54:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:50,351 INFO L124 PetriNetUnfolderBase]: 20427/35429 cut-off events. [2023-11-19 07:54:50,352 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2023-11-19 07:54:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66437 conditions, 35429 events. 20427/35429 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 303739 event pairs, 5999 based on Foata normal form. 0/31297 useless extension candidates. Maximal degree in co-relation 51541. Up to 20580 conditions per place. [2023-11-19 07:54:50,698 INFO L140 encePairwiseOnDemand]: 410/431 looper letters, 75 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2023-11-19 07:54:50,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 462 flow [2023-11-19 07:54:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-11-19 07:54:50,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220417633410673 [2023-11-19 07:54:50,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-11-19 07:54:50,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-11-19 07:54:50,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:50,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-11-19 07:54:50,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 07:54:50,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 07:54:50,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 07:54:50,711 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 188 flow. Second operand 3 states and 675 transitions. [2023-11-19 07:54:50,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 462 flow [2023-11-19 07:54:50,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 450 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:50,755 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 310 flow [2023-11-19 07:54:50,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=86, PETRI_TRANSITIONS=96} [2023-11-19 07:54:50,759 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-19 07:54:50,759 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 310 flow [2023-11-19 07:54:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 07:54:50,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:50,760 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:50,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:54:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1823970289, now seen corresponding path program 1 times [2023-11-19 07:54:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759904794] [2023-11-19 07:54:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:50,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:51,104 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 07:54:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759904794] [2023-11-19 07:54:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759904794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:51,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452743931] [2023-11-19 07:54:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:51,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 431 [2023-11-19 07:54:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 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 07:54:51,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:51,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 431 [2023-11-19 07:54:51,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:53,057 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1230] L706-2-->L697-6: Formula: (and (<= |v_thr1Thread1of3ForFork0_findMax_~e~0#1_43| v_~max~0_131) (= (+ |v_thr1Thread1of3ForFork0_findMax_~i~0#1_60| 1) |v_thr1Thread1of3ForFork0_findMax_~i~0#1_59|)) InVars {thr1Thread1of3ForFork0_findMax_~e~0#1=|v_thr1Thread1of3ForFork0_findMax_~e~0#1_43|, thr1Thread1of3ForFork0_findMax_~i~0#1=|v_thr1Thread1of3ForFork0_findMax_~i~0#1_60|, ~max~0=v_~max~0_131} OutVars{thr1Thread1of3ForFork0_findMax_~e~0#1=|v_thr1Thread1of3ForFork0_findMax_~e~0#1_43|, thr1Thread1of3ForFork0_findMax_~i~0#1=|v_thr1Thread1of3ForFork0_findMax_~i~0#1_59|, thr1Thread1of3ForFork0_findMax_#t~post1#1=|v_thr1Thread1of3ForFork0_findMax_#t~post1#1_31|, ~max~0=v_~max~0_131} AuxVars[] AssignedVars[thr1Thread1of3ForFork0_findMax_~i~0#1, thr1Thread1of3ForFork0_findMax_#t~post1#1][133], [139#L698-4true, 88#L701-1true, 157#L697-6true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 234#(= |#race~max~0| 0), thr1Thread1of3ForFork0InUse, 144#L717-5true, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,058 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-11-19 07:54:53,058 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:54:53,058 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:54:53,058 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:54:53,389 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1113] L702-->L702-2: Formula: (= v_~max~0_105 |v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|) InVars {thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|} OutVars{thr1Thread3of3ForFork0_findMax_#t~nondet4#1=|v_thr1Thread3of3ForFork0_findMax_#t~nondet4#1_17|, ~max~0=v_~max~0_105, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_#t~nondet4#1, ~max~0][145], [139#L698-4true, 35#L702-2true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 234#(= |#race~max~0| 0), thr1Thread1of3ForFork0InUse, 19#L706-2true, 144#L717-5true, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,390 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-11-19 07:54:53,390 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:54:53,390 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:54:53,390 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:54:53,414 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1230] L706-2-->L697-6: Formula: (and (<= |v_thr1Thread1of3ForFork0_findMax_~e~0#1_43| v_~max~0_131) (= (+ |v_thr1Thread1of3ForFork0_findMax_~i~0#1_60| 1) |v_thr1Thread1of3ForFork0_findMax_~i~0#1_59|)) InVars {thr1Thread1of3ForFork0_findMax_~e~0#1=|v_thr1Thread1of3ForFork0_findMax_~e~0#1_43|, thr1Thread1of3ForFork0_findMax_~i~0#1=|v_thr1Thread1of3ForFork0_findMax_~i~0#1_60|, ~max~0=v_~max~0_131} OutVars{thr1Thread1of3ForFork0_findMax_~e~0#1=|v_thr1Thread1of3ForFork0_findMax_~e~0#1_43|, thr1Thread1of3ForFork0_findMax_~i~0#1=|v_thr1Thread1of3ForFork0_findMax_~i~0#1_59|, thr1Thread1of3ForFork0_findMax_#t~post1#1=|v_thr1Thread1of3ForFork0_findMax_#t~post1#1_31|, ~max~0=v_~max~0_131} AuxVars[] AssignedVars[thr1Thread1of3ForFork0_findMax_~i~0#1, thr1Thread1of3ForFork0_findMax_#t~post1#1][133], [139#L698-4true, 88#L701-1true, 157#L697-6true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 168#L717-4true, 234#(= |#race~max~0| 0), thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,414 INFO L294 olderBase$Statistics]: this new event has 43 ancestors and is cut-off event [2023-11-19 07:54:53,414 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-11-19 07:54:53,414 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-11-19 07:54:53,415 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-11-19 07:54:53,647 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1113] L702-->L702-2: Formula: (= v_~max~0_105 |v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|) InVars {thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|} OutVars{thr1Thread3of3ForFork0_findMax_#t~nondet4#1=|v_thr1Thread3of3ForFork0_findMax_#t~nondet4#1_17|, ~max~0=v_~max~0_105, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_21|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_#t~nondet4#1, ~max~0][145], [139#L698-4true, 35#L702-2true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 168#L717-4true, 234#(= |#race~max~0| 0), 19#L706-2true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,647 INFO L294 olderBase$Statistics]: this new event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,647 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,647 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,647 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,700 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1234] L706-2-->L697-6: Formula: (and (<= |v_thr1Thread3of3ForFork0_findMax_~e~0#1_37| v_~max~0_135) (= (+ |v_thr1Thread3of3ForFork0_findMax_~i~0#1_58| 1) |v_thr1Thread3of3ForFork0_findMax_~i~0#1_57|)) InVars {thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_58|, ~max~0=v_~max~0_135, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_37|} OutVars{thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_57|, thr1Thread3of3ForFork0_findMax_#t~post1#1=|v_thr1Thread3of3ForFork0_findMax_#t~post1#1_31|, ~max~0=v_~max~0_135, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_37|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_~i~0#1, thr1Thread3of3ForFork0_findMax_#t~post1#1][157], [139#L698-4true, 74#L697-6true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 234#(= |#race~max~0| 0), thr1Thread1of3ForFork0InUse, 19#L706-2true, 144#L717-5true, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,701 INFO L294 olderBase$Statistics]: this new event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,701 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,701 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,701 INFO L297 olderBase$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-11-19 07:54:53,966 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1234] L706-2-->L697-6: Formula: (and (<= |v_thr1Thread3of3ForFork0_findMax_~e~0#1_37| v_~max~0_135) (= (+ |v_thr1Thread3of3ForFork0_findMax_~i~0#1_58| 1) |v_thr1Thread3of3ForFork0_findMax_~i~0#1_57|)) InVars {thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_58|, ~max~0=v_~max~0_135, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_37|} OutVars{thr1Thread3of3ForFork0_findMax_~i~0#1=|v_thr1Thread3of3ForFork0_findMax_~i~0#1_57|, thr1Thread3of3ForFork0_findMax_#t~post1#1=|v_thr1Thread3of3ForFork0_findMax_#t~post1#1_31|, ~max~0=v_~max~0_135, thr1Thread3of3ForFork0_findMax_~e~0#1=|v_thr1Thread3of3ForFork0_findMax_~e~0#1_37|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_findMax_~i~0#1, thr1Thread3of3ForFork0_findMax_#t~post1#1][157], [139#L698-4true, 74#L697-6true, 242#(and (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4) 1)) 0) (= (select (select |#race| |~#storage~0.base|) (+ |~#storage~0.offset| 2 (* |thr1Thread2of3ForFork0_findMax_~i~0#1| 4))) 0)), 168#L717-4true, 234#(= |#race~max~0| 0), 19#L706-2true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 232#true, thr1Thread3of3ForFork0InUse]) [2023-11-19 07:54:53,967 INFO L294 olderBase$Statistics]: this new event has 48 ancestors and is cut-off event [2023-11-19 07:54:53,967 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-11-19 07:54:53,967 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-11-19 07:54:53,967 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-11-19 07:54:55,309 INFO L124 PetriNetUnfolderBase]: 17540/33305 cut-off events. [2023-11-19 07:54:55,309 INFO L125 PetriNetUnfolderBase]: For 6212/6346 co-relation queries the response was YES. [2023-11-19 07:54:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67465 conditions, 33305 events. 17540/33305 cut-off events. For 6212/6346 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 310119 event pairs, 4064 based on Foata normal form. 70/29466 useless extension candidates. Maximal degree in co-relation 53427. Up to 10109 conditions per place. [2023-11-19 07:54:55,605 INFO L140 encePairwiseOnDemand]: 425/431 looper letters, 121 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2023-11-19 07:54:55,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 183 transitions, 804 flow [2023-11-19 07:54:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1328 transitions. [2023-11-19 07:54:55,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135344160866203 [2023-11-19 07:54:55,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1328 transitions. [2023-11-19 07:54:55,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1328 transitions. [2023-11-19 07:54:55,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:55,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1328 transitions. [2023-11-19 07:54:55,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.33333333333334) internal successors, (1328), 6 states have internal predecessors, (1328), 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 07:54:55,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 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 07:54:55,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 431.0) internal successors, (3017), 7 states have internal predecessors, (3017), 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 07:54:55,627 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 310 flow. Second operand 6 states and 1328 transitions. [2023-11-19 07:54:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 183 transitions, 804 flow [2023-11-19 07:54:55,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 183 transitions, 758 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:55,950 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 288 flow [2023-11-19 07:54:55,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2023-11-19 07:54:55,956 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-19 07:54:55,957 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 288 flow [2023-11-19 07:54:55,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 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 07:54:55,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:55,960 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:55,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 07:54:55,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 132738791, now seen corresponding path program 1 times [2023-11-19 07:54:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998085839] [2023-11-19 07:54:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:55,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:54:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:54:56,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:54:56,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:54:56,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:54:56,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 07:54:56,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 07:54:56,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 07:54:56,012 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 07:54:56,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 07:54:56,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 07:54:56,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 07:54:56,013 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 07:54:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 07:54:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 07:54:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 07:54:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 07:54:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 07:54:56,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 07:54:56,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 07:54:56,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 07:54:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:56,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:54:56,017 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:54:56,017 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:54:56,066 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:56,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,160 INFO L124 PetriNetUnfolderBase]: 29/349 cut-off events. [2023-11-19 07:54:56,160 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:54:56,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 349 events. 29/349 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1095 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 279. Up to 10 conditions per place. [2023-11-19 07:54:56,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:56,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 299 transitions, 626 flow [2023-11-19 07:54:56,243 INFO L124 PetriNetUnfolderBase]: 29/349 cut-off events. [2023-11-19 07:54:56,244 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 07:54:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 349 events. 29/349 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1095 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 279. Up to 10 conditions per place. [2023-11-19 07:54:56,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 57088 [2023-11-19 07:55:01,058 INFO L134 LiptonReduction]: Checked pairs total: 187309 [2023-11-19 07:55:01,058 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-19 07:55:01,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:01,061 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;@16e53e92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:01,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:55:01,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:01,066 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-19 07:55:01,066 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:55:01,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:01,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:01,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-19 07:55:01,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1746120451, now seen corresponding path program 1 times [2023-11-19 07:55:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905603214] [2023-11-19 07:55:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:01,305 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 07:55:01,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:01,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905603214] [2023-11-19 07:55:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905603214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215417958] [2023-11-19 07:55:01,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:01,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 550 [2023-11-19 07:55:01,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 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 07:55:01,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:01,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 550 [2023-11-19 07:55:01,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand