./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/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_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/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_ae743ee2-7463-4e0f-b4b0-3948d87e093b/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 dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:54,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:54,258 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:05:54,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:54,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:54,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:54,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:54,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:54,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:54,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:54,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:54,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:54,330 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:54,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:54,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:54,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:54,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:54,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:54,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:54,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:54,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:54,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:54,337 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:05:54,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:54,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:54,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:54,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:54,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:54,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:54,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:54,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:54,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:54,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:54,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:54,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:54,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:54,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:54,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:54,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:54,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:54,345 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:54,345 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_ae743ee2-7463-4e0f-b4b0-3948d87e093b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbb282ba26be8214a1cf8ae9e386fa47ac739eda395572670b4579e50ef53b1a [2023-11-19 08:05:54,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:54,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:54,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:54,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:54,714 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:54,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2023-11-19 08:05:58,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:58,593 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:58,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-pthread.i [2023-11-19 08:05:58,618 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/data/1a431de24/a878dce1ef4e43f491cd325540dd95c0/FLAG55fea92b6 [2023-11-19 08:05:58,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/data/1a431de24/a878dce1ef4e43f491cd325540dd95c0 [2023-11-19 08:05:58,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:58,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:58,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:58,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:58,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:58,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:58" (1/1) ... [2023-11-19 08:05:58,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee47ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:58, skipping insertion in model container [2023-11-19 08:05:58,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:58" (1/1) ... [2023-11-19 08:05:58,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:59,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:59,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:59,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:59,373 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:59,373 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:59,382 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:59,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59 WrapperNode [2023-11-19 08:05:59,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:59,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:59,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:59,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:59,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,465 INFO L138 Inliner]: procedures = 166, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-11-19 08:05:59,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:59,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:59,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:59,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:59,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:59,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:59,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:59,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:59,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (1/1) ... [2023-11-19 08:05:59,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:59,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:59,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae743ee2-7463-4e0f-b4b0-3948d87e093b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:59,607 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 08:05:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 08:05:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:05:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:59,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:59,613 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 08:05:59,827 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:59,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:00,126 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:00,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:00,206 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:06:00,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:00 BoogieIcfgContainer [2023-11-19 08:06:00,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:00,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:00,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:00,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:00,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:58" (1/3) ... [2023-11-19 08:06:00,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6577d66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:00, skipping insertion in model container [2023-11-19 08:06:00,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:59" (2/3) ... [2023-11-19 08:06:00,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6577d66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:00, skipping insertion in model container [2023-11-19 08:06:00,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:00" (3/3) ... [2023-11-19 08:06:00,225 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-pthread.i [2023-11-19 08:06:00,235 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:06:00,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:00,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 08:06:00,248 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:06:00,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:00,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,471 INFO L124 PetriNetUnfolderBase]: 4/87 cut-off events. [2023-11-19 08:06:00,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:00,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 4/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-11-19 08:06:00,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:00,509 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 156 flow [2023-11-19 08:06:00,561 INFO L124 PetriNetUnfolderBase]: 4/87 cut-off events. [2023-11-19 08:06:00,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:00,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 4/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2023-11-19 08:06:00,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 1232 [2023-11-19 08:06:03,265 INFO L134 LiptonReduction]: Checked pairs total: 987 [2023-11-19 08:06:03,265 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-11-19 08:06:03,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:03,290 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;@58cf68e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:03,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 08:06:03,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:03,294 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:03,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:03,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:03,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:03,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:06:03,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash 10991586, now seen corresponding path program 1 times [2023-11-19 08:06:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258396759] [2023-11-19 08:06:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258396759] [2023-11-19 08:06:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258396759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:03,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:03,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:03,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838094342] [2023-11-19 08:06:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:03,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:03,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 151 [2023-11-19 08:06:03,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 12 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 08:06:03,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:03,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 151 [2023-11-19 08:06:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:03,697 INFO L124 PetriNetUnfolderBase]: 7/20 cut-off events. [2023-11-19 08:06:03,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:03,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 20 events. 7/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 4 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 08:06:03,700 INFO L140 encePairwiseOnDemand]: 147/151 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 08:06:03,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 08:06:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 147 transitions. [2023-11-19 08:06:03,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867549668874172 [2023-11-19 08:06:03,728 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 147 transitions. [2023-11-19 08:06:03,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 147 transitions. [2023-11-19 08:06:03,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:03,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 147 transitions. [2023-11-19 08:06:03,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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 08:06:03,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 08:06:03,752 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 08:06:03,754 INFO L175 Difference]: Start difference. First operand has 14 places, 12 transitions, 28 flow. Second operand 2 states and 147 transitions. [2023-11-19 08:06:03,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 08:06:03,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:03,759 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 08:06:03,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 08:06:03,768 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -3 predicate places. [2023-11-19 08:06:03,769 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 08:06:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 08:06:03,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:03,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:06:03,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:03,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 08:06:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1972945866, now seen corresponding path program 1 times [2023-11-19 08:06:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846383821] [2023-11-19 08:06:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:03,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:03,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:03,905 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:03,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-19 08:06:03,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-19 08:06:03,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-19 08:06:03,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-19 08:06:03,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-19 08:06:03,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-19 08:06:03,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-19 08:06:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:03,933 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:06:03,938 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:03,938 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:06:03,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:04,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,078 INFO L124 PetriNetUnfolderBase]: 7/145 cut-off events. [2023-11-19 08:06:04,078 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:04,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 145 events. 7/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-11-19 08:06:04,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:04,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,093 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 121 transitions, 252 flow [2023-11-19 08:06:04,129 INFO L124 PetriNetUnfolderBase]: 7/145 cut-off events. [2023-11-19 08:06:04,133 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:06:04,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 145 events. 7/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-11-19 08:06:04,141 INFO L119 LiptonReduction]: Number of co-enabled transitions 6424 [2023-11-19 08:06:07,192 INFO L134 LiptonReduction]: Checked pairs total: 8834 [2023-11-19 08:06:07,192 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-11-19 08:06:07,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:07,197 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;@58cf68e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:07,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 08:06:07,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:07,200 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:06:07,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:07,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:07,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:06:07,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash 19579110, now seen corresponding path program 1 times [2023-11-19 08:06:07,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756416664] [2023-11-19 08:06:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:07,236 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 08:06:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756416664] [2023-11-19 08:06:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756416664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:07,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:07,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:07,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623958508] [2023-11-19 08:06:07,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:07,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:07,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:07,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 233 [2023-11-19 08:06:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 70 flow. Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 08:06:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:07,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 233 [2023-11-19 08:06:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:07,305 INFO L124 PetriNetUnfolderBase]: 121/251 cut-off events. [2023-11-19 08:06:07,305 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-19 08:06:07,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 251 events. 121/251 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1034 event pairs, 95 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 188. Up to 208 conditions per place. [2023-11-19 08:06:07,308 INFO L140 encePairwiseOnDemand]: 228/233 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-11-19 08:06:07,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 92 flow [2023-11-19 08:06:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2023-11-19 08:06:07,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042918454935622 [2023-11-19 08:06:07,313 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2023-11-19 08:06:07,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2023-11-19 08:06:07,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2023-11-19 08:06:07,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 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 08:06:07,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 08:06:07,319 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 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 08:06:07,319 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 70 flow. Second operand 2 states and 235 transitions. [2023-11-19 08:06:07,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 92 flow [2023-11-19 08:06:07,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:07,321 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2023-11-19 08:06:07,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-19 08:06:07,323 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-11-19 08:06:07,323 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2023-11-19 08:06:07,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 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 08:06:07,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:07,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:07,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:06:07,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -833857021, now seen corresponding path program 1 times [2023-11-19 08:06:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674925154] [2023-11-19 08:06:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:07,381 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 08:06:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:07,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674925154] [2023-11-19 08:06:07,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674925154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:07,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:07,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:07,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936238202] [2023-11-19 08:06:07,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:07,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:07,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:07,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:07,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:07,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 233 [2023-11-19 08:06:07,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 08:06:07,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:07,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 233 [2023-11-19 08:06:07,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:07,535 INFO L124 PetriNetUnfolderBase]: 235/423 cut-off events. [2023-11-19 08:06:07,535 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-19 08:06:07,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 423 events. 235/423 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1967 event pairs, 76 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 853. Up to 263 conditions per place. [2023-11-19 08:06:07,539 INFO L140 encePairwiseOnDemand]: 223/233 looper letters, 30 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-11-19 08:06:07,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 175 flow [2023-11-19 08:06:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-11-19 08:06:07,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907010014306152 [2023-11-19 08:06:07,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-11-19 08:06:07,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-11-19 08:06:07,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-11-19 08:06:07,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:07,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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 08:06:07,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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 08:06:07,551 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 3 states and 343 transitions. [2023-11-19 08:06:07,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 175 flow [2023-11-19 08:06:07,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:07,553 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 128 flow [2023-11-19 08:06:07,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=233, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-19 08:06:07,554 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-11-19 08:06:07,555 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 128 flow [2023-11-19 08:06:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 08:06:07,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:07,555 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:06:07,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:07,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:06:07,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1328631269, now seen corresponding path program 1 times [2023-11-19 08:06:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:07,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777882584] [2023-11-19 08:06:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:07,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:07,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:07,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:07,591 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:07,591 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 08:06:07,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 08:06:07,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 08:06:07,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 08:06:07,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 08:06:07,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 08:06:07,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 08:06:07,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 08:06:07,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 08:06:07,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 08:06:07,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:07,594 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 08:06:07,595 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:07,595 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:06:07,635 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:07,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,672 INFO L124 PetriNetUnfolderBase]: 10/203 cut-off events. [2023-11-19 08:06:07,672 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:07,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 10/203 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 490 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-11-19 08:06:07,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,678 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,678 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:07,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,679 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 166 transitions, 350 flow [2023-11-19 08:06:07,710 INFO L124 PetriNetUnfolderBase]: 10/203 cut-off events. [2023-11-19 08:06:07,710 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:06:07,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 10/203 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 490 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-11-19 08:06:07,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 15576 [2023-11-19 08:06:11,404 INFO L134 LiptonReduction]: Checked pairs total: 23578 [2023-11-19 08:06:11,405 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-19 08:06:11,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:11,409 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;@58cf68e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:11,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 08:06:11,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:11,411 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:06:11,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:11,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:11,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:11,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:06:11,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 30885034, now seen corresponding path program 1 times [2023-11-19 08:06:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213821635] [2023-11-19 08:06:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:11,436 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 08:06:11,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:11,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213821635] [2023-11-19 08:06:11,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213821635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:11,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:11,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428881208] [2023-11-19 08:06:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:11,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:11,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2023-11-19 08:06:11,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 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 08:06:11,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:11,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2023-11-19 08:06:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:11,792 INFO L124 PetriNetUnfolderBase]: 1237/2011 cut-off events. [2023-11-19 08:06:11,792 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-11-19 08:06:11,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2011 events. 1237/2011 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10889 event pairs, 995 based on Foata normal form. 0/1653 useless extension candidates. Maximal degree in co-relation 485. Up to 1756 conditions per place. [2023-11-19 08:06:11,810 INFO L140 encePairwiseOnDemand]: 312/319 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-11-19 08:06:11,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 134 flow [2023-11-19 08:06:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-11-19 08:06:11,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047021943573667 [2023-11-19 08:06:11,819 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-11-19 08:06:11,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-11-19 08:06:11,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:11,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-11-19 08:06:11,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 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 08:06:11,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 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 08:06:11,826 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 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 08:06:11,826 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 102 flow. Second operand 2 states and 322 transitions. [2023-11-19 08:06:11,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 134 flow [2023-11-19 08:06:11,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 132 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:11,831 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 86 flow [2023-11-19 08:06:11,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-19 08:06:11,835 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-11-19 08:06:11,835 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 86 flow [2023-11-19 08:06:11,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 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 08:06:11,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:11,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:11,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:06:11,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 973883269, now seen corresponding path program 1 times [2023-11-19 08:06:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150514164] [2023-11-19 08:06:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:11,903 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 08:06:11,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150514164] [2023-11-19 08:06:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150514164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:11,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077247741] [2023-11-19 08:06:11,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:11,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 319 [2023-11-19 08:06:11,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 08:06:11,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:11,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 319 [2023-11-19 08:06:11,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:12,873 INFO L124 PetriNetUnfolderBase]: 4157/6220 cut-off events. [2023-11-19 08:06:12,874 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2023-11-19 08:06:12,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12531 conditions, 6220 events. 4157/6220 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36978 event pairs, 1492 based on Foata normal form. 0/5408 useless extension candidates. Maximal degree in co-relation 12525. Up to 3791 conditions per place. [2023-11-19 08:06:12,942 INFO L140 encePairwiseOnDemand]: 304/319 looper letters, 45 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-11-19 08:06:12,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 262 flow [2023-11-19 08:06:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-11-19 08:06:12,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49216300940438873 [2023-11-19 08:06:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-11-19 08:06:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-11-19 08:06:12,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:12,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-11-19 08:06:12,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 08:06:12,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 08:06:12,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 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 08:06:12,958 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 86 flow. Second operand 3 states and 471 transitions. [2023-11-19 08:06:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 262 flow [2023-11-19 08:06:12,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:12,967 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 188 flow [2023-11-19 08:06:12,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-11-19 08:06:12,970 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2023-11-19 08:06:12,970 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 188 flow [2023-11-19 08:06:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 08:06:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:12,972 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 08:06:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:12,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:06:12,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 809563508, now seen corresponding path program 1 times [2023-11-19 08:06:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895182674] [2023-11-19 08:06:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:13,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:13,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:13,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:13,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 08:06:13,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-19 08:06:13,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-19 08:06:13,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-19 08:06:13,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-19 08:06:13,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-19 08:06:13,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-19 08:06:13,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-19 08:06:13,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-19 08:06:13,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-19 08:06:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-19 08:06:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-19 08:06:13,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-19 08:06:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:13,046 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 08:06:13,047 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:13,047 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 08:06:13,116 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:13,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,184 INFO L124 PetriNetUnfolderBase]: 13/261 cut-off events. [2023-11-19 08:06:13,184 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:13,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 261 events. 13/261 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 211. Up to 10 conditions per place. [2023-11-19 08:06:13,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:13,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 211 transitions, 450 flow [2023-11-19 08:06:13,302 INFO L124 PetriNetUnfolderBase]: 13/261 cut-off events. [2023-11-19 08:06:13,302 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:06:13,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 261 events. 13/261 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 749 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 211. Up to 10 conditions per place. [2023-11-19 08:06:13,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 28688 [2023-11-19 08:06:17,813 INFO L134 LiptonReduction]: Checked pairs total: 44319 [2023-11-19 08:06:17,814 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-11-19 08:06:17,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:17,816 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;@58cf68e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:17,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 08:06:17,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:17,819 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 08:06:17,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:17,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:17,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:17,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:06:17,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:17,820 INFO L85 PathProgramCache]: Analyzing trace with hash 44447270, now seen corresponding path program 1 times [2023-11-19 08:06:17,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:17,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902936051] [2023-11-19 08:06:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:17,860 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 08:06:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902936051] [2023-11-19 08:06:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902936051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:17,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898593485] [2023-11-19 08:06:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:17,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 405 [2023-11-19 08:06:17,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 187.0) internal successors, (374), 2 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:17,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:17,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 405 [2023-11-19 08:06:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:20,069 INFO L124 PetriNetUnfolderBase]: 10525/15163 cut-off events. [2023-11-19 08:06:20,069 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2023-11-19 08:06:20,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30048 conditions, 15163 events. 10525/15163 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 92722 event pairs, 8555 based on Foata normal form. 0/12515 useless extension candidates. Maximal degree in co-relation 3973. Up to 13636 conditions per place. [2023-11-19 08:06:20,218 INFO L140 encePairwiseOnDemand]: 396/405 looper letters, 30 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-11-19 08:06:20,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 178 flow [2023-11-19 08:06:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:06:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 409 transitions. [2023-11-19 08:06:20,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049382716049383 [2023-11-19 08:06:20,222 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 409 transitions. [2023-11-19 08:06:20,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 409 transitions. [2023-11-19 08:06:20,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:20,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 409 transitions. [2023-11-19 08:06:20,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 204.5) internal successors, (409), 2 states have internal predecessors, (409), 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 08:06:20,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 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 08:06:20,229 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 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 08:06:20,229 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 136 flow. Second operand 2 states and 409 transitions. [2023-11-19 08:06:20,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 178 flow [2023-11-19 08:06:20,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 172 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:20,241 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 112 flow [2023-11-19 08:06:20,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-19 08:06:20,244 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2023-11-19 08:06:20,244 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 112 flow [2023-11-19 08:06:20,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 187.0) internal successors, (374), 2 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:20,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:20,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:20,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:20,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:06:20,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1279996769, now seen corresponding path program 1 times [2023-11-19 08:06:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348339694] [2023-11-19 08:06:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:20,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:20,296 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 08:06:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:20,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348339694] [2023-11-19 08:06:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348339694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:20,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:20,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261501924] [2023-11-19 08:06:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:20,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:20,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 405 [2023-11-19 08:06:20,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 08:06:20,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:20,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 405 [2023-11-19 08:06:20,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:27,680 INFO L124 PetriNetUnfolderBase]: 47049/64528 cut-off events. [2023-11-19 08:06:27,680 INFO L125 PetriNetUnfolderBase]: For 3562/3562 co-relation queries the response was YES. [2023-11-19 08:06:27,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129132 conditions, 64528 events. 47049/64528 cut-off events. For 3562/3562 co-relation queries the response was YES. Maximal size of possible extension queue 2743. Compared 435104 event pairs, 17172 based on Foata normal form. 0/54830 useless extension candidates. Maximal degree in co-relation 129125. Up to 37765 conditions per place. [2023-11-19 08:06:28,181 INFO L140 encePairwiseOnDemand]: 385/405 looper letters, 56 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-11-19 08:06:28,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 337 flow [2023-11-19 08:06:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:06:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-11-19 08:06:28,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897119341563786 [2023-11-19 08:06:28,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-11-19 08:06:28,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-11-19 08:06:28,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:28,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-11-19 08:06:28,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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 08:06:28,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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 08:06:28,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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 08:06:28,197 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 112 flow. Second operand 3 states and 595 transitions. [2023-11-19 08:06:28,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 337 flow [2023-11-19 08:06:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:06:28,226 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 248 flow [2023-11-19 08:06:28,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-11-19 08:06:28,227 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-19 08:06:28,228 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 248 flow [2023-11-19 08:06:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 08:06:28,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:28,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:28,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:06:28,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1384532135, now seen corresponding path program 1 times [2023-11-19 08:06:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310946157] [2023-11-19 08:06:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:06:28,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:28,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310946157] [2023-11-19 08:06:28,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310946157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:28,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:28,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:28,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898409394] [2023-11-19 08:06:28,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:28,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 405 [2023-11-19 08:06:28,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 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 08:06:28,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:28,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 405 [2023-11-19 08:06:28,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:29,343 INFO L124 PetriNetUnfolderBase]: 3431/5631 cut-off events. [2023-11-19 08:06:29,343 INFO L125 PetriNetUnfolderBase]: For 3101/3101 co-relation queries the response was YES. [2023-11-19 08:06:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15489 conditions, 5631 events. 3431/5631 cut-off events. For 3101/3101 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 36015 event pairs, 145 based on Foata normal form. 1344/6954 useless extension candidates. Maximal degree in co-relation 15480. Up to 3043 conditions per place. [2023-11-19 08:06:29,399 INFO L140 encePairwiseOnDemand]: 392/405 looper letters, 74 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2023-11-19 08:06:29,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 100 transitions, 599 flow [2023-11-19 08:06:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 959 transitions. [2023-11-19 08:06:29,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47358024691358025 [2023-11-19 08:06:29,405 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 959 transitions. [2023-11-19 08:06:29,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 959 transitions. [2023-11-19 08:06:29,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:29,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 959 transitions. [2023-11-19 08:06:29,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.8) internal successors, (959), 5 states have internal predecessors, (959), 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 08:06:29,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 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 08:06:29,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 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 08:06:29,418 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 248 flow. Second operand 5 states and 959 transitions. [2023-11-19 08:06:29,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 100 transitions, 599 flow [2023-11-19 08:06:29,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 100 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:06:29,437 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 242 flow [2023-11-19 08:06:29,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-19 08:06:29,438 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2023-11-19 08:06:29,438 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 242 flow [2023-11-19 08:06:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 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 08:06:29,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:29,439 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:29,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:06:29,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:06:29,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1957742085, now seen corresponding path program 1 times [2023-11-19 08:06:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:29,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344373639] [2023-11-19 08:06:29,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:29,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:29,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:29,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:29,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:06:29,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-19 08:06:29,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-19 08:06:29,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-19 08:06:29,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-19 08:06:29,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-19 08:06:29,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-19 08:06:29,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-19 08:06:29,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-19 08:06:29,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-19 08:06:29,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-19 08:06:29,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-19 08:06:29,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-19 08:06:29,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-19 08:06:29,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-19 08:06:29,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-19 08:06:29,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-19 08:06:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:06:29,483 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 08:06:29,484 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:06:29,484 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-19 08:06:29,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:06:29,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,604 INFO L124 PetriNetUnfolderBase]: 16/319 cut-off events. [2023-11-19 08:06:29,605 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-19 08:06:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 319 events. 16/319 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1026 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 12 conditions per place. [2023-11-19 08:06:29,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:06:29,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 256 transitions, 552 flow [2023-11-19 08:06:29,682 INFO L124 PetriNetUnfolderBase]: 16/319 cut-off events. [2023-11-19 08:06:29,683 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-19 08:06:29,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 319 events. 16/319 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1026 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 274. Up to 12 conditions per place. [2023-11-19 08:06:29,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 45760 [2023-11-19 08:06:35,232 INFO L134 LiptonReduction]: Checked pairs total: 68991 [2023-11-19 08:06:35,232 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-11-19 08:06:35,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:35,237 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;@58cf68e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:35,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 08:06:35,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:06:35,240 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:06:35,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:06:35,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:35,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:06:35,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-19 08:06:35,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 61266222, now seen corresponding path program 1 times [2023-11-19 08:06:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422297146] [2023-11-19 08:06:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:35,282 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 08:06:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422297146] [2023-11-19 08:06:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422297146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:35,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973101862] [2023-11-19 08:06:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:35,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:35,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:35,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:35,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 495 [2023-11-19 08:06:35,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 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 08:06:35,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:35,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 495 [2023-11-19 08:06:35,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand