./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d76df1bfaca9781352b9c7afbe4683f5e649e880008edad8122f422eebb0dbe8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:32,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:32,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:50:32,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:32,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:32,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:32,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:32,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:32,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:32,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:32,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:32,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:32,120 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:32,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:32,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:32,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:32,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:32,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:32,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:32,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:32,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:32,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:32,126 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:50:32,127 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:32,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:32,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:32,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:32,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:32,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:32,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:32,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:32,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:32,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:32,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:32,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:32,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:32,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:32,133 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:32,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:32,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:32,134 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:32,134 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_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d76df1bfaca9781352b9c7afbe4683f5e649e880008edad8122f422eebb0dbe8 [2023-11-19 07:50:32,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:32,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:32,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:32,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:32,444 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:32,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-11-19 07:50:35,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:35,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:35,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2023-11-19 07:50:35,931 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/data/dcc97938d/81fe9a2ee517441ba0efa2c1d3b5f00c/FLAG3b8841e61 [2023-11-19 07:50:35,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/data/dcc97938d/81fe9a2ee517441ba0efa2c1d3b5f00c [2023-11-19 07:50:35,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:35,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:35,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:35,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:35,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:35,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:35" (1/1) ... [2023-11-19 07:50:35,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c21f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:35, skipping insertion in model container [2023-11-19 07:50:35,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:35" (1/1) ... [2023-11-19 07:50:36,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:36,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:36,450 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:36,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:36,570 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:36,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36 WrapperNode [2023-11-19 07:50:36,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:36,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:36,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:36,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:36,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,656 INFO L138 Inliner]: procedures = 164, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 140 [2023-11-19 07:50:36,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:36,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:36,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:36,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:36,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,673 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:36,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:36,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:36,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:36,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (1/1) ... [2023-11-19 07:50:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:36,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:36,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:36,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3754f788-2ebd-43ec-a8d4-b2a46b4053c2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:50:36,798 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:50:36,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:50:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:36,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:36,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:36,801 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:50:36,937 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:36,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:37,320 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:37,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:37,530 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:50:37,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:37 BoogieIcfgContainer [2023-11-19 07:50:37,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:37,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:37,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:37,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:37,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:35" (1/3) ... [2023-11-19 07:50:37,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e1b280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:37, skipping insertion in model container [2023-11-19 07:50:37,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:36" (2/3) ... [2023-11-19 07:50:37,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e1b280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:37, skipping insertion in model container [2023-11-19 07:50:37,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:37" (3/3) ... [2023-11-19 07:50:37,549 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur-pthread.i [2023-11-19 07:50:37,559 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:50:37,570 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:37,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-19 07:50:37,572 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:50:37,652 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:50:37,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,764 INFO L124 PetriNetUnfolderBase]: 9/149 cut-off events. [2023-11-19 07:50:37,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:37,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 149 events. 9/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 168 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2023-11-19 07:50:37,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:37,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,803 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 280 flow [2023-11-19 07:50:37,881 INFO L124 PetriNetUnfolderBase]: 9/149 cut-off events. [2023-11-19 07:50:37,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:37,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 149 events. 9/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 168 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2023-11-19 07:50:37,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 2912 [2023-11-19 07:50:41,955 INFO L134 LiptonReduction]: Checked pairs total: 5095 [2023-11-19 07:50:41,957 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-11-19 07:50:41,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:41,990 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;@40c03eae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:41,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 07:50:41,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:41,996 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:50:41,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:41,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:41,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:50:41,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 07:50:42,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 648890506, now seen corresponding path program 1 times [2023-11-19 07:50:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515267975] [2023-11-19 07:50:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:42,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515267975] [2023-11-19 07:50:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515267975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:42,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:42,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:50:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994779297] [2023-11-19 07:50:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:42,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:42,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 309 [2023-11-19 07:50:42,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:42,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:42,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 309 [2023-11-19 07:50:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:42,308 INFO L124 PetriNetUnfolderBase]: 18/51 cut-off events. [2023-11-19 07:50:42,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:50:42,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 51 events. 18/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 15 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 88. Up to 47 conditions per place. [2023-11-19 07:50:42,313 INFO L140 encePairwiseOnDemand]: 291/309 looper letters, 12 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-11-19 07:50:42,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 58 flow [2023-11-19 07:50:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:50:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 272 transitions. [2023-11-19 07:50:42,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401294498381877 [2023-11-19 07:50:42,337 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 272 transitions. [2023-11-19 07:50:42,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 272 transitions. [2023-11-19 07:50:42,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:42,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 272 transitions. [2023-11-19 07:50:42,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:42,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:42,351 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:42,353 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 70 flow. Second operand 2 states and 272 transitions. [2023-11-19 07:50:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 58 flow [2023-11-19 07:50:42,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:42,358 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 34 flow [2023-11-19 07:50:42,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-11-19 07:50:42,366 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -16 predicate places. [2023-11-19 07:50:42,367 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 34 flow [2023-11-19 07:50:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:42,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:42,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:50:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:42,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 07:50:42,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1359117583, now seen corresponding path program 1 times [2023-11-19 07:50:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806279878] [2023-11-19 07:50:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:42,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:42,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:50:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:42,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:50:42,480 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:50:42,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-19 07:50:42,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-19 07:50:42,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-19 07:50:42,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-19 07:50:42,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-19 07:50:42,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-19 07:50:42,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-19 07:50:42,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-19 07:50:42,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-19 07:50:42,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-19 07:50:42,487 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-19 07:50:42,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-19 07:50:42,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-19 07:50:42,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-19 07:50:42,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-19 07:50:42,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-19 07:50:42,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-19 07:50:42,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-19 07:50:42,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-19 07:50:42,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-19 07:50:42,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-19 07:50:42,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-19 07:50:42,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-19 07:50:42,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-19 07:50:42,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-19 07:50:42,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-19 07:50:42,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-19 07:50:42,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-19 07:50:42,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-19 07:50:42,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-19 07:50:42,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-19 07:50:42,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:50:42,493 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:50:42,496 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:50:42,496 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:50:42,560 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:50:42,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,626 INFO L124 PetriNetUnfolderBase]: 17/267 cut-off events. [2023-11-19 07:50:42,626 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:50:42,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 267 events. 17/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 628 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 221. Up to 6 conditions per place. [2023-11-19 07:50:42,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:42,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 243 transitions, 496 flow [2023-11-19 07:50:42,721 INFO L124 PetriNetUnfolderBase]: 17/267 cut-off events. [2023-11-19 07:50:42,722 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:50:42,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 267 events. 17/267 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 628 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 221. Up to 6 conditions per place. [2023-11-19 07:50:42,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 27664 [2023-11-19 07:50:45,298 INFO L134 LiptonReduction]: Checked pairs total: 152998 [2023-11-19 07:50:45,299 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-11-19 07:50:45,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:45,309 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;@40c03eae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:45,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-11-19 07:50:45,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:45,313 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 07:50:45,313 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:50:45,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:45,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:45,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-11-19 07:50:45,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -816474952, now seen corresponding path program 1 times [2023-11-19 07:50:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:45,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064188631] [2023-11-19 07:50:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:45,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064188631] [2023-11-19 07:50:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064188631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:50:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301566848] [2023-11-19 07:50:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:45,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:45,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 374 [2023-11-19 07:50:45,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:45,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:45,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 374 [2023-11-19 07:50:45,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:46,027 INFO L124 PetriNetUnfolderBase]: 1091/3332 cut-off events. [2023-11-19 07:50:46,027 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-19 07:50:46,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 3332 events. 1091/3332 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 26045 event pairs, 977 based on Foata normal form. 180/3160 useless extension candidates. Maximal degree in co-relation 3073. Up to 1810 conditions per place. [2023-11-19 07:50:46,060 INFO L140 encePairwiseOnDemand]: 354/374 looper letters, 40 selfloop transitions, 0 changer transitions 0/120 dead transitions. [2023-11-19 07:50:46,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 120 transitions, 330 flow [2023-11-19 07:50:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:50:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 482 transitions. [2023-11-19 07:50:46,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6443850267379679 [2023-11-19 07:50:46,066 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 482 transitions. [2023-11-19 07:50:46,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 482 transitions. [2023-11-19 07:50:46,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:46,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 482 transitions. [2023-11-19 07:50:46,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:46,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:46,078 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:46,078 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 296 flow. Second operand 2 states and 482 transitions. [2023-11-19 07:50:46,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 120 transitions, 330 flow [2023-11-19 07:50:46,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:46,083 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 250 flow [2023-11-19 07:50:46,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2023-11-19 07:50:46,084 INFO L281 CegarLoopForPetriNet]: 140 programPoint places, -17 predicate places. [2023-11-19 07:50:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 250 flow [2023-11-19 07:50:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:46,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:46,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:50:46,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:50:46,086 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)] === [2023-11-19 07:50:46,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash -81920241, now seen corresponding path program 1 times [2023-11-19 07:50:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:46,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594294437] [2023-11-19 07:50:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:46,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:46,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:50:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:50:46,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:50:46,129 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:50:46,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-11-19 07:50:46,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-11-19 07:50:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-11-19 07:50:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-11-19 07:50:46,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-11-19 07:50:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-11-19 07:50:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-11-19 07:50:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-11-19 07:50:46,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-11-19 07:50:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-11-19 07:50:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-11-19 07:50:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-11-19 07:50:46,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-11-19 07:50:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-11-19 07:50:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-11-19 07:50:46,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-11-19 07:50:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-11-19 07:50:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-11-19 07:50:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-11-19 07:50:46,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-11-19 07:50:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-11-19 07:50:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-11-19 07:50:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-11-19 07:50:46,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-11-19 07:50:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-11-19 07:50:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-11-19 07:50:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-11-19 07:50:46,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-11-19 07:50:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-11-19 07:50:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-11-19 07:50:46,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2023-11-19 07:50:46,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-11-19 07:50:46,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-11-19 07:50:46,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-11-19 07:50:46,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-11-19 07:50:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-11-19 07:50:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-11-19 07:50:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-11-19 07:50:46,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-11-19 07:50:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-11-19 07:50:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-11-19 07:50:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-11-19 07:50:46,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-11-19 07:50:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-11-19 07:50:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-11-19 07:50:46,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2023-11-19 07:50:46,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:50:46,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:50:46,143 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:50:46,143 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:50:46,218 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:50:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,355 INFO L124 PetriNetUnfolderBase]: 25/385 cut-off events. [2023-11-19 07:50:46,356 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:50:46,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 385 events. 25/385 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1285 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2023-11-19 07:50:46,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:50:46,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 348 transitions, 714 flow [2023-11-19 07:50:46,464 INFO L124 PetriNetUnfolderBase]: 25/385 cut-off events. [2023-11-19 07:50:46,464 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:50:46,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 385 events. 25/385 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1285 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2023-11-19 07:50:46,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 74256 [2023-11-19 07:50:49,494 INFO L134 LiptonReduction]: Checked pairs total: 427613 [2023-11-19 07:50:49,495 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-11-19 07:50:49,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:49,498 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;@40c03eae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:49,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 07:50:49,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:50:49,502 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-19 07:50:49,502 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:50:49,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:49,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:49,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 07:50:49,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2118659175, now seen corresponding path program 1 times [2023-11-19 07:50:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798378421] [2023-11-19 07:50:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:49,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798378421] [2023-11-19 07:50:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798378421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:49,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:49,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:50:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206637429] [2023-11-19 07:50:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:50:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:50:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:50:49,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 531 [2023-11-19 07:50:49,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 209 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 303.5) internal successors, (607), 2 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:49,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:50:49,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 531 [2023-11-19 07:50:49,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:50:57,901 INFO L124 PetriNetUnfolderBase]: 24232/50888 cut-off events. [2023-11-19 07:50:57,901 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2023-11-19 07:50:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86064 conditions, 50888 events. 24232/50888 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 522603 event pairs, 22498 based on Foata normal form. 4548/50071 useless extension candidates. Maximal degree in co-relation 48693. Up to 34034 conditions per place. [2023-11-19 07:50:58,651 INFO L140 encePairwiseOnDemand]: 501/531 looper letters, 52 selfloop transitions, 0 changer transitions 0/175 dead transitions. [2023-11-19 07:50:58,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 175 transitions, 472 flow [2023-11-19 07:50:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:50:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:50:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 684 transitions. [2023-11-19 07:50:58,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2023-11-19 07:50:58,655 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 684 transitions. [2023-11-19 07:50:58,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 684 transitions. [2023-11-19 07:50:58,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:50:58,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 684 transitions. [2023-11-19 07:50:58,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 342.0) internal successors, (684), 2 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,664 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,664 INFO L175 Difference]: Start difference. First operand has 205 places, 209 transitions, 436 flow. Second operand 2 states and 684 transitions. [2023-11-19 07:50:58,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 175 transitions, 472 flow [2023-11-19 07:50:58,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 175 transitions, 470 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:50:58,676 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 366 flow [2023-11-19 07:50:58,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=366, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2023-11-19 07:50:58,680 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -25 predicate places. [2023-11-19 07:50:58,680 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 366 flow [2023-11-19 07:50:58,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 303.5) internal successors, (607), 2 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:58,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:50:58,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:58,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:50:58,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-11-19 07:50:58,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1469807117, now seen corresponding path program 1 times [2023-11-19 07:50:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:58,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794060691] [2023-11-19 07:50:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:59,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794060691] [2023-11-19 07:50:59,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794060691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668378303] [2023-11-19 07:50:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:51:00,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 531 [2023-11-19 07:51:00,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 175 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 274.6666666666667) internal successors, (1648), 6 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:51:00,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:51:00,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 531 [2023-11-19 07:51:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand