./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ --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 d76df1bfaca9781352b9c7afbe4683f5e649e880008edad8122f422eebb0dbe8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:34:57,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:34:57,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-23 22:34:58,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:34:58,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:34:58,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:34:58,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:34:58,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:34:58,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:34:58,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:34:58,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:34:58,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:34:58,035 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:34:58,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:34:58,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:34:58,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:34:58,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:34:58,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:34:58,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:34:58,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:34:58,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:34:58,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:34:58,041 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 22:34:58,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:34:58,042 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:34:58,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:34:58,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:34:58,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:34:58,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:34:58,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:34:58,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:34:58,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:34:58,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:34:58,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:34:58,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:34:58,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:34:58,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:34:58,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:34:58,049 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:34:58,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:34:58,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:34:58,050 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_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d76df1bfaca9781352b9c7afbe4683f5e649e880008edad8122f422eebb0dbe8 [2023-11-23 22:34:58,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:34:58,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:34:58,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:34:58,327 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:34:58,328 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:34:58,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread-race.i [2023-11-23 22:35:01,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:35:02,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:35:02,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread-race.i [2023-11-23 22:35:02,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/data/57a6fca83/b2899ed32f7446f99aa880b7767a4410/FLAGc6e9a29f7 [2023-11-23 22:35:02,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/data/57a6fca83/b2899ed32f7446f99aa880b7767a4410 [2023-11-23 22:35:02,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:35:02,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:35:02,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:02,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:35:02,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:35:02,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc25f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02, skipping insertion in model container [2023-11-23 22:35:02,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:35:02,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:02,765 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:35:02,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:35:02,878 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:35:02,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02 WrapperNode [2023-11-23 22:35:02,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:35:02,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:02,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:35:02,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:35:02,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,970 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2023-11-23 22:35:02,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:35:02,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:35:02,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:35:02,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:35:02,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:02,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:35:03,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:35:03,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:35:03,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:35:03,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (1/1) ... [2023-11-23 22:35:03,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:35:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:35:03,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:35:03,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db478016-0899-4086-9518-258a30ec240b/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:35:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:35:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-23 22:35:03,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-23 22:35:03,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:35:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:35:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:35:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:35:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:35:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:35:03,152 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:35:03,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:35:03,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:35:03,155 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:35:03,406 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:35:03,410 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:35:03,823 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:35:04,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:35:04,007 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 22:35:04,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:04 BoogieIcfgContainer [2023-11-23 22:35:04,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:35:04,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:35:04,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:35:04,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:35:04,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:02" (1/3) ... [2023-11-23 22:35:04,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b49a33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:04, skipping insertion in model container [2023-11-23 22:35:04,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:02" (2/3) ... [2023-11-23 22:35:04,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b49a33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:04, skipping insertion in model container [2023-11-23 22:35:04,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:04" (3/3) ... [2023-11-23 22:35:04,021 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur-pthread-race.i [2023-11-23 22:35:04,033 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:35:04,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:35:04,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-23 22:35:04,053 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:35:04,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:35:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 138 transitions, 280 flow [2023-11-23 22:35:04,291 INFO L124 PetriNetUnfolderBase]: 8/149 cut-off events. [2023-11-23 22:35:04,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:35:04,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 149 events. 8/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2023-11-23 22:35:04,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 138 transitions, 280 flow [2023-11-23 22:35:04,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 138 transitions, 280 flow [2023-11-23 22:35:04,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:35:04,326 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;@660dbbc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:35:04,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-23 22:35:04,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:35:04,349 INFO L124 PetriNetUnfolderBase]: 3/53 cut-off events. [2023-11-23 22:35:04,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:35:04,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:04,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:04,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-23 22:35:04,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1348882817, now seen corresponding path program 1 times [2023-11-23 22:35:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:04,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181287837] [2023-11-23 22:35:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:04,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:04,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:04,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:04,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:35:04,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-23 22:35:04,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-23 22:35:04,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-23 22:35:04,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-23 22:35:04,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-23 22:35:04,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-23 22:35:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-23 22:35:04,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-23 22:35:04,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-23 22:35:04,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-23 22:35:04,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-23 22:35:04,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-23 22:35:04,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-23 22:35:04,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-23 22:35:04,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-23 22:35:04,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-23 22:35:04,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-23 22:35:04,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-23 22:35:04,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-23 22:35:04,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-23 22:35:04,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-23 22:35:04,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-23 22:35:04,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-23 22:35:04,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-23 22:35:04,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-23 22:35:04,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-23 22:35:04,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-23 22:35:04,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-23 22:35:04,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-23 22:35:04,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-23 22:35:04,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-23 22:35:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:35:04,605 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 22:35:04,610 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:35:04,610 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 22:35:04,711 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:35:04,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 243 transitions, 496 flow [2023-11-23 22:35:04,828 INFO L124 PetriNetUnfolderBase]: 15/267 cut-off events. [2023-11-23 22:35:04,828 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:35:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 267 events. 15/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 623 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 221. Up to 6 conditions per place. [2023-11-23 22:35:04,835 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 243 transitions, 496 flow [2023-11-23 22:35:04,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 243 transitions, 496 flow [2023-11-23 22:35:04,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:35:04,844 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;@660dbbc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:35:04,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-11-23 22:35:04,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:35:04,870 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2023-11-23 22:35:04,870 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:35:04,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:04,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:04,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-23 22:35:04,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1471768278, now seen corresponding path program 1 times [2023-11-23 22:35:04,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402751045] [2023-11-23 22:35:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:04,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:05,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402751045] [2023-11-23 22:35:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402751045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:05,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:05,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:35:05,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755739392] [2023-11-23 22:35:05,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:35:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:35:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:35:05,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 243 [2023-11-23 22:35:05,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 243 transitions, 496 flow. Second operand has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2023-11-23 22:35:05,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:05,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 243 [2023-11-23 22:35:05,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:35:05,313 INFO L124 PetriNetUnfolderBase]: 22/514 cut-off events. [2023-11-23 22:35:05,313 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-23 22:35:05,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 514 events. 22/514 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1983 event pairs, 12 based on Foata normal form. 52/501 useless extension candidates. Maximal degree in co-relation 148. Up to 33 conditions per place. [2023-11-23 22:35:05,325 INFO L140 encePairwiseOnDemand]: 219/243 looper letters, 8 selfloop transitions, 0 changer transitions 0/204 dead transitions. [2023-11-23 22:35:05,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 434 flow [2023-11-23 22:35:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:35:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:35:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-11-23 22:35:05,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2023-11-23 22:35:05,348 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-11-23 22:35:05,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-11-23 22:35:05,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:35:05,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-11-23 22:35:05,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 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) [2023-11-23 22:35:05,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-11-23 22:35:05,374 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 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) [2023-11-23 22:35:05,377 INFO L175 Difference]: Start difference. First operand has 235 places, 243 transitions, 496 flow. Second operand 2 states and 450 transitions. [2023-11-23 22:35:05,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 434 flow [2023-11-23 22:35:05,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 204 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:35:05,400 INFO L231 Difference]: Finished difference. Result has 206 places, 204 transitions, 418 flow [2023-11-23 22:35:05,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=418, PETRI_PLACES=206, PETRI_TRANSITIONS=204} [2023-11-23 22:35:05,408 INFO L281 CegarLoopForPetriNet]: 235 programPoint places, -29 predicate places. [2023-11-23 22:35:05,408 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 204 transitions, 418 flow [2023-11-23 22:35:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 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) [2023-11-23 22:35:05,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:05,411 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:05,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:35:05,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-23 22:35:05,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1672418049, now seen corresponding path program 1 times [2023-11-23 22:35:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:05,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858062883] [2023-11-23 22:35:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:05,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:05,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:05,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:35:05,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-11-23 22:35:05,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-11-23 22:35:05,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-11-23 22:35:05,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-11-23 22:35:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-11-23 22:35:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-11-23 22:35:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-11-23 22:35:05,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-11-23 22:35:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-11-23 22:35:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-11-23 22:35:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-11-23 22:35:05,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-11-23 22:35:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-11-23 22:35:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-11-23 22:35:05,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-11-23 22:35:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-11-23 22:35:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-11-23 22:35:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-11-23 22:35:05,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-11-23 22:35:05,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-11-23 22:35:05,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-11-23 22:35:05,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-11-23 22:35:05,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-11-23 22:35:05,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-11-23 22:35:05,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-11-23 22:35:05,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-11-23 22:35:05,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-11-23 22:35:05,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-11-23 22:35:05,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-11-23 22:35:05,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-11-23 22:35:05,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2023-11-23 22:35:05,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-11-23 22:35:05,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-11-23 22:35:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-11-23 22:35:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-11-23 22:35:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-11-23 22:35:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-11-23 22:35:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-11-23 22:35:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-11-23 22:35:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-11-23 22:35:05,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-11-23 22:35:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-11-23 22:35:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-11-23 22:35:05,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-11-23 22:35:05,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-11-23 22:35:05,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2023-11-23 22:35:05,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:35:05,537 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 22:35:05,538 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:35:05,538 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 22:35:05,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:35:05,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 348 transitions, 714 flow [2023-11-23 22:35:05,772 INFO L124 PetriNetUnfolderBase]: 22/385 cut-off events. [2023-11-23 22:35:05,773 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-23 22:35:05,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 385 events. 22/385 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1290 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2023-11-23 22:35:05,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 348 transitions, 714 flow [2023-11-23 22:35:05,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 348 transitions, 714 flow [2023-11-23 22:35:05,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:35:05,793 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;@660dbbc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:35:05,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-23 22:35:05,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:35:05,801 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2023-11-23 22:35:05,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:35:05,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:05,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:05,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-23 22:35:05,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1915968310, now seen corresponding path program 1 times [2023-11-23 22:35:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328360814] [2023-11-23 22:35:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328360814] [2023-11-23 22:35:05,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328360814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:35:05,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798659751] [2023-11-23 22:35:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:05,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:35:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:35:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:35:05,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 348 [2023-11-23 22:35:05,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 348 transitions, 714 flow. Second operand has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 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) [2023-11-23 22:35:05,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:05,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 348 [2023-11-23 22:35:05,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:35:06,564 INFO L124 PetriNetUnfolderBase]: 150/2142 cut-off events. [2023-11-23 22:35:06,564 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-11-23 22:35:06,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 2142 events. 150/2142 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 15945 event pairs, 108 based on Foata normal form. 284/2145 useless extension candidates. Maximal degree in co-relation 556. Up to 193 conditions per place. [2023-11-23 22:35:06,608 INFO L140 encePairwiseOnDemand]: 313/348 looper letters, 12 selfloop transitions, 0 changer transitions 0/293 dead transitions. [2023-11-23 22:35:06,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 293 transitions, 628 flow [2023-11-23 22:35:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:35:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:35:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2023-11-23 22:35:06,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9238505747126436 [2023-11-23 22:35:06,615 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2023-11-23 22:35:06,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2023-11-23 22:35:06,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:35:06,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2023-11-23 22:35:06,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 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) [2023-11-23 22:35:06,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2023-11-23 22:35:06,626 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2023-11-23 22:35:06,629 INFO L175 Difference]: Start difference. First operand has 336 places, 348 transitions, 714 flow. Second operand 2 states and 643 transitions. [2023-11-23 22:35:06,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 293 transitions, 628 flow [2023-11-23 22:35:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 293 transitions, 626 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-23 22:35:06,647 INFO L231 Difference]: Finished difference. Result has 295 places, 293 transitions, 602 flow [2023-11-23 22:35:06,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=602, PETRI_PLACES=295, PETRI_TRANSITIONS=293} [2023-11-23 22:35:06,649 INFO L281 CegarLoopForPetriNet]: 336 programPoint places, -41 predicate places. [2023-11-23 22:35:06,650 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 293 transitions, 602 flow [2023-11-23 22:35:06,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.0) internal successors, (598), 2 states have internal predecessors, (598), 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) [2023-11-23 22:35:06,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:06,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:35:06,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-23 22:35:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 915202355, now seen corresponding path program 1 times [2023-11-23 22:35:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424170729] [2023-11-23 22:35:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:07,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:07,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424170729] [2023-11-23 22:35:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424170729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:35:07,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838136632] [2023-11-23 22:35:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:07,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:35:07,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:35:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:35:07,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 348 [2023-11-23 22:35:07,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 293 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-11-23 22:35:07,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:07,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 348 [2023-11-23 22:35:07,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:35:13,312 INFO L124 PetriNetUnfolderBase]: 2594/20940 cut-off events. [2023-11-23 22:35:13,313 INFO L125 PetriNetUnfolderBase]: For 784/784 co-relation queries the response was YES. [2023-11-23 22:35:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25329 conditions, 20940 events. 2594/20940 cut-off events. For 784/784 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 278558 event pairs, 432 based on Foata normal form. 0/18217 useless extension candidates. Maximal degree in co-relation 25323. Up to 2202 conditions per place. [2023-11-23 22:35:13,669 INFO L140 encePairwiseOnDemand]: 321/348 looper letters, 74 selfloop transitions, 29 changer transitions 0/356 dead transitions. [2023-11-23 22:35:13,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 356 transitions, 974 flow [2023-11-23 22:35:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:35:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:35:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1727 transitions. [2023-11-23 22:35:13,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8271072796934866 [2023-11-23 22:35:13,677 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1727 transitions. [2023-11-23 22:35:13,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1727 transitions. [2023-11-23 22:35:13,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:35:13,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1727 transitions. [2023-11-23 22:35:13,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.8333333333333) internal successors, (1727), 6 states have internal predecessors, (1727), 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) [2023-11-23 22:35:13,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 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) [2023-11-23 22:35:13,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 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) [2023-11-23 22:35:13,693 INFO L175 Difference]: Start difference. First operand has 295 places, 293 transitions, 602 flow. Second operand 6 states and 1727 transitions. [2023-11-23 22:35:13,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 356 transitions, 974 flow [2023-11-23 22:35:13,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 356 transitions, 974 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:35:13,706 INFO L231 Difference]: Finished difference. Result has 305 places, 321 transitions, 826 flow [2023-11-23 22:35:13,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=826, PETRI_PLACES=305, PETRI_TRANSITIONS=321} [2023-11-23 22:35:13,709 INFO L281 CegarLoopForPetriNet]: 336 programPoint places, -31 predicate places. [2023-11-23 22:35:13,709 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 321 transitions, 826 flow [2023-11-23 22:35:13,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-11-23 22:35:13,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:13,711 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:13,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:35:13,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-23 22:35:13,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1514357649, now seen corresponding path program 1 times [2023-11-23 22:35:13,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903483033] [2023-11-23 22:35:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:13,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:35:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:35:13,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:35:13,790 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:35:13,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2023-11-23 22:35:13,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2023-11-23 22:35:13,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2023-11-23 22:35:13,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2023-11-23 22:35:13,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2023-11-23 22:35:13,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2023-11-23 22:35:13,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2023-11-23 22:35:13,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2023-11-23 22:35:13,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2023-11-23 22:35:13,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2023-11-23 22:35:13,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2023-11-23 22:35:13,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2023-11-23 22:35:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2023-11-23 22:35:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2023-11-23 22:35:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2023-11-23 22:35:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2023-11-23 22:35:13,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2023-11-23 22:35:13,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2023-11-23 22:35:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2023-11-23 22:35:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2023-11-23 22:35:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2023-11-23 22:35:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2023-11-23 22:35:13,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2023-11-23 22:35:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2023-11-23 22:35:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2023-11-23 22:35:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2023-11-23 22:35:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2023-11-23 22:35:13,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2023-11-23 22:35:13,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2023-11-23 22:35:13,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2023-11-23 22:35:13,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2023-11-23 22:35:13,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2023-11-23 22:35:13,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2023-11-23 22:35:13,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2023-11-23 22:35:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2023-11-23 22:35:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2023-11-23 22:35:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2023-11-23 22:35:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2023-11-23 22:35:13,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2023-11-23 22:35:13,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2023-11-23 22:35:13,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2023-11-23 22:35:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:35:13,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 22:35:13,808 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:35:13,809 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 22:35:13,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:35:13,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 453 transitions, 934 flow [2023-11-23 22:35:14,101 INFO L124 PetriNetUnfolderBase]: 29/503 cut-off events. [2023-11-23 22:35:14,102 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-23 22:35:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 503 events. 29/503 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1956 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 429. Up to 10 conditions per place. [2023-11-23 22:35:14,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 437 places, 453 transitions, 934 flow [2023-11-23 22:35:14,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 453 transitions, 934 flow [2023-11-23 22:35:14,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:35:14,129 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;@660dbbc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:35:14,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-23 22:35:14,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:35:14,137 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2023-11-23 22:35:14,138 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:35:14,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:14,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:14,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-11-23 22:35:14,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1040244111, now seen corresponding path program 1 times [2023-11-23 22:35:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417505470] [2023-11-23 22:35:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:14,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417505470] [2023-11-23 22:35:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417505470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:14,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:35:14,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245914213] [2023-11-23 22:35:14,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:14,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:35:14,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:35:14,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:35:14,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 453 [2023-11-23 22:35:14,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 453 transitions, 934 flow. Second operand has 2 states, 2 states have (on average 388.0) internal successors, (776), 2 states have internal predecessors, (776), 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) [2023-11-23 22:35:14,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:14,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 453 [2023-11-23 22:35:14,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:35:16,926 INFO L124 PetriNetUnfolderBase]: 854/8846 cut-off events. [2023-11-23 22:35:16,926 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2023-11-23 22:35:17,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 8846 events. 854/8846 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 95119 event pairs, 684 based on Foata normal form. 1466/9166 useless extension candidates. Maximal degree in co-relation 2416. Up to 1025 conditions per place. [2023-11-23 22:35:17,093 INFO L140 encePairwiseOnDemand]: 407/453 looper letters, 16 selfloop transitions, 0 changer transitions 0/382 dead transitions. [2023-11-23 22:35:17,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 382 transitions, 824 flow [2023-11-23 22:35:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:35:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 22:35:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 836 transitions. [2023-11-23 22:35:17,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9227373068432672 [2023-11-23 22:35:17,098 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 836 transitions. [2023-11-23 22:35:17,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 836 transitions. [2023-11-23 22:35:17,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:35:17,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 836 transitions. [2023-11-23 22:35:17,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 418.0) internal successors, (836), 2 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:35:17,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-23 22:35:17,106 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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) [2023-11-23 22:35:17,107 INFO L175 Difference]: Start difference. First operand has 437 places, 453 transitions, 934 flow. Second operand 2 states and 836 transitions. [2023-11-23 22:35:17,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 382 transitions, 824 flow [2023-11-23 22:35:17,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 382 transitions, 818 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-23 22:35:17,117 INFO L231 Difference]: Finished difference. Result has 384 places, 382 transitions, 786 flow [2023-11-23 22:35:17,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=786, PETRI_PLACES=384, PETRI_TRANSITIONS=382} [2023-11-23 22:35:17,119 INFO L281 CegarLoopForPetriNet]: 437 programPoint places, -53 predicate places. [2023-11-23 22:35:17,119 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 382 transitions, 786 flow [2023-11-23 22:35:17,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 388.0) internal successors, (776), 2 states have internal predecessors, (776), 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) [2023-11-23 22:35:17,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:17,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:17,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:35:17,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-11-23 22:35:17,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash -670250216, now seen corresponding path program 1 times [2023-11-23 22:35:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101742013] [2023-11-23 22:35:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:35:17,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:17,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101742013] [2023-11-23 22:35:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101742013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:17,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:35:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017840720] [2023-11-23 22:35:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:35:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:35:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:35:18,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 453 [2023-11-23 22:35:18,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 382 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 360.5) internal successors, (2163), 6 states have internal predecessors, (2163), 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) [2023-11-23 22:35:18,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:18,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 453 [2023-11-23 22:35:18,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:35:41,793 INFO L124 PetriNetUnfolderBase]: 16072/86359 cut-off events. [2023-11-23 22:35:41,794 INFO L125 PetriNetUnfolderBase]: For 4105/4105 co-relation queries the response was YES. [2023-11-23 22:35:43,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110643 conditions, 86359 events. 16072/86359 cut-off events. For 4105/4105 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 1340837 event pairs, 3109 based on Foata normal form. 0/75918 useless extension candidates. Maximal degree in co-relation 110636. Up to 13298 conditions per place. [2023-11-23 22:35:44,224 INFO L140 encePairwiseOnDemand]: 425/453 looper letters, 90 selfloop transitions, 33 changer transitions 0/461 dead transitions. [2023-11-23 22:35:44,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 461 transitions, 1250 flow [2023-11-23 22:35:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:35:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:35:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2281 transitions. [2023-11-23 22:35:44,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8392200147167035 [2023-11-23 22:35:44,234 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2281 transitions. [2023-11-23 22:35:44,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2281 transitions. [2023-11-23 22:35:44,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:35:44,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2281 transitions. [2023-11-23 22:35:44,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 380.1666666666667) internal successors, (2281), 6 states have internal predecessors, (2281), 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) [2023-11-23 22:35:44,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 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) [2023-11-23 22:35:44,258 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 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) [2023-11-23 22:35:44,259 INFO L175 Difference]: Start difference. First operand has 384 places, 382 transitions, 786 flow. Second operand 6 states and 2281 transitions. [2023-11-23 22:35:44,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 461 transitions, 1250 flow [2023-11-23 22:35:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 461 transitions, 1250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:35:44,281 INFO L231 Difference]: Finished difference. Result has 394 places, 414 transitions, 1036 flow [2023-11-23 22:35:44,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1036, PETRI_PLACES=394, PETRI_TRANSITIONS=414} [2023-11-23 22:35:44,285 INFO L281 CegarLoopForPetriNet]: 437 programPoint places, -43 predicate places. [2023-11-23 22:35:44,285 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 414 transitions, 1036 flow [2023-11-23 22:35:44,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 360.5) internal successors, (2163), 6 states have internal predecessors, (2163), 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) [2023-11-23 22:35:44,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:35:44,288 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:35:44,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:35:44,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-11-23 22:35:44,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:35:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2013530212, now seen corresponding path program 1 times [2023-11-23 22:35:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:35:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312883238] [2023-11-23 22:35:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:35:44,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:35:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:35:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:35:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:35:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312883238] [2023-11-23 22:35:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312883238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:35:44,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:35:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:35:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447234877] [2023-11-23 22:35:44,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:35:44,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:35:44,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:35:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:35:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:35:45,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 453 [2023-11-23 22:35:45,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 414 transitions, 1036 flow. Second operand has 6 states, 6 states have (on average 360.6666666666667) internal successors, (2164), 6 states have internal predecessors, (2164), 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) [2023-11-23 22:35:45,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:35:45,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 453 [2023-11-23 22:35:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand