./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --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 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:47:04,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:47:04,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:47:04,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:47:04,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:47:04,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:47:04,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:47:04,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:47:04,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:47:04,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:47:04,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:47:04,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:47:04,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:47:04,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:47:04,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:47:04,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:47:04,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:47:04,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:47:04,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:47:04,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:47:04,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:47:04,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:47:04,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:47:04,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:47:04,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:47:04,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:47:04,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:47:04,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:47:04,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:47:04,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:47:04,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:47:04,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:47:04,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:47:04,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:47:04,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:47:04,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:47:04,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:47:04,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:47:04,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:47:04,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:47:04,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:47:04,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 13:47:04,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:47:04,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:47:04,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:47:04,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:47:04,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:47:04,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:47:04,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:47:04,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:47:04,274 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:47:04,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:47:04,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:47:04,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:47:04,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:47:04,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:47:04,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:47:04,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:47:04,278 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:47:04,278 INFO L138 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_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 [2022-12-13 13:47:04,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:47:04,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:47:04,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:47:04,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:47:04,467 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:47:04,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2022-12-13 13:47:07,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:47:07,243 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:47:07,244 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2022-12-13 13:47:07,254 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/data/cf52e67f4/fba4f406bf3a45adb7104d72e766ef82/FLAGc566c6ec4 [2022-12-13 13:47:07,268 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/data/cf52e67f4/fba4f406bf3a45adb7104d72e766ef82 [2022-12-13 13:47:07,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:47:07,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:47:07,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:47:07,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:47:07,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:47:07,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c0a8e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07, skipping insertion in model container [2022-12-13 13:47:07,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:47:07,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:47:07,461 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:47:07,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,591 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-13 13:47:07,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:47:07,603 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:47:07,615 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:47:07,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,640 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/sv-benchmarks/c/pthread-ext/18_read_write_lock.i[31161,31174] [2022-12-13 13:47:07,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:47:07,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:47:07,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:47:07,668 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:47:07,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07 WrapperNode [2022-12-13 13:47:07,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:47:07,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:47:07,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:47:07,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:47:07,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,708 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2022-12-13 13:47:07,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:47:07,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:47:07,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:47:07,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:47:07,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:47:07,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:47:07,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:47:07,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:47:07,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (1/1) ... [2022-12-13 13:47:07,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:47:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:47:07,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:47:07,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:47:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 13:47:07,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 13:47:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:47:07,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:47:07,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:47:07,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:47:07,797 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:47:07,891 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:47:07,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:47:08,056 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:47:08,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:47:08,119 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:47:08,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:47:08 BoogieIcfgContainer [2022-12-13 13:47:08,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:47:08,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:47:08,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:47:08,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:47:08,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:47:07" (1/3) ... [2022-12-13 13:47:08,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3123fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:47:08, skipping insertion in model container [2022-12-13 13:47:08,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:47:07" (2/3) ... [2022-12-13 13:47:08,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3123fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:47:08, skipping insertion in model container [2022-12-13 13:47:08,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:47:08" (3/3) ... [2022-12-13 13:47:08,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2022-12-13 13:47:08,133 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:47:08,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:47:08,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 13:47:08,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:47:08,167 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:47:08,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 153 flow [2022-12-13 13:47:08,225 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-12-13 13:47:08,225 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:47:08,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:47:08,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 74 transitions, 153 flow [2022-12-13 13:47:08,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 149 flow [2022-12-13 13:47:08,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:47:08,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 73 transitions, 149 flow [2022-12-13 13:47:08,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 73 transitions, 149 flow [2022-12-13 13:47:08,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 149 flow [2022-12-13 13:47:08,262 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-12-13 13:47:08,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:47:08,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:47:08,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 1110 [2022-12-13 13:47:09,478 INFO L134 LiptonReduction]: Checked pairs total: 3029 [2022-12-13 13:47:09,478 INFO L136 LiptonReduction]: Total number of compositions: 67 [2022-12-13 13:47:09,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:47:09,493 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=LoopsAndPotentialCycles, 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;@71c608d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:47:09,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-12-13 13:47:09,495 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 13:47:09,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:47:09,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:47:09,496 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:47:09,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 13:47:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:47:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash 419922, now seen corresponding path program 1 times [2022-12-13 13:47:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:47:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082560800] [2022-12-13 13:47:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:47:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:47:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:47:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:47:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:47:09,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082560800] [2022-12-13 13:47:09,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082560800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:47:09,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:47:09,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:47:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36284469] [2022-12-13 13:47:09,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:47:09,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:47:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:47:09,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:47:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:47:09,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 141 [2022-12-13 13:47:09,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-12-13 13:47:09,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:47:09,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 141 [2022-12-13 13:47:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:47:09,668 INFO L130 PetriNetUnfolder]: 15/49 cut-off events. [2022-12-13 13:47:09,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:47:09,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 49 events. 15/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 129 event pairs, 15 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 85. Up to 41 conditions per place. [2022-12-13 13:47:09,670 INFO L137 encePairwiseOnDemand]: 128/141 looper letters, 9 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2022-12-13 13:47:09,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 49 flow [2022-12-13 13:47:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:47:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:47:09,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 121 transitions. [2022-12-13 13:47:09,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2022-12-13 13:47:09,680 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 121 transitions. [2022-12-13 13:47:09,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 121 transitions. [2022-12-13 13:47:09,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:47:09,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 121 transitions. [2022-12-13 13:47:09,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 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) [2022-12-13 13:47:09,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-12-13 13:47:09,687 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2022-12-13 13:47:09,689 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 55 flow. Second operand 2 states and 121 transitions. [2022-12-13 13:47:09,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 49 flow [2022-12-13 13:47:09,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:47:09,692 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 26 flow [2022-12-13 13:47:09,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2022-12-13 13:47:09,696 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -13 predicate places. [2022-12-13 13:47:09,696 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 26 flow [2022-12-13 13:47:09,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 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) [2022-12-13 13:47:09,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:47:09,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:47:09,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:47:09,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 13:47:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:47:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash -374591725, now seen corresponding path program 1 times [2022-12-13 13:47:09,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:47:09,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396336126] [2022-12-13 13:47:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:47:09,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:47:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:47:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:47:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:47:09,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396336126] [2022-12-13 13:47:09,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396336126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:47:09,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:47:09,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:47:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125194074] [2022-12-13 13:47:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:47:09,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:47:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:47:09,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:47:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:47:09,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 141 [2022-12-13 13:47:09,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2022-12-13 13:47:09,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:47:09,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 141 [2022-12-13 13:47:09,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:47:09,797 INFO L130 PetriNetUnfolder]: 25/68 cut-off events. [2022-12-13 13:47:09,797 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:47:09,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 68 events. 25/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 12 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 138. Up to 47 conditions per place. [2022-12-13 13:47:09,798 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 11 selfloop transitions, 3 changer transitions 4/18 dead transitions. [2022-12-13 13:47:09,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 18 transitions, 74 flow [2022-12-13 13:47:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:47:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:47:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2022-12-13 13:47:09,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35697399527186763 [2022-12-13 13:47:09,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2022-12-13 13:47:09,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2022-12-13 13:47:09,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:47:09,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2022-12-13 13:47:09,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-12-13 13:47:09,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-12-13 13:47:09,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-12-13 13:47:09,803 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 26 flow. Second operand 3 states and 151 transitions. [2022-12-13 13:47:09,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 18 transitions, 74 flow [2022-12-13 13:47:09,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:47:09,804 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 43 flow [2022-12-13 13:47:09,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 13:47:09,804 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -11 predicate places. [2022-12-13 13:47:09,805 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 43 flow [2022-12-13 13:47:09,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2022-12-13 13:47:09,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:47:09,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:47:09,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:47:09,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 13:47:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:47:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2028051153, now seen corresponding path program 1 times [2022-12-13 13:47:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:47:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956357646] [2022-12-13 13:47:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:47:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:47:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:47:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:47:09,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:47:09,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956357646] [2022-12-13 13:47:09,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956357646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:47:09,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:47:09,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:47:09,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96988561] [2022-12-13 13:47:09,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:47:09,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:47:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:47:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:47:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:47:09,922 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 141 [2022-12-13 13:47:09,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2022-12-13 13:47:09,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:47:09,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 141 [2022-12-13 13:47:09,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:47:09,944 INFO L130 PetriNetUnfolder]: 7/38 cut-off events. [2022-12-13 13:47:09,944 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-12-13 13:47:09,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 38 events. 7/38 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 5/43 useless extension candidates. Maximal degree in co-relation 90. Up to 21 conditions per place. [2022-12-13 13:47:09,944 INFO L137 encePairwiseOnDemand]: 137/141 looper letters, 9 selfloop transitions, 3 changer transitions 2/16 dead transitions. [2022-12-13 13:47:09,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 77 flow [2022-12-13 13:47:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:47:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:47:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2022-12-13 13:47:09,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36347517730496454 [2022-12-13 13:47:09,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 205 transitions. [2022-12-13 13:47:09,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 205 transitions. [2022-12-13 13:47:09,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:47:09,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 205 transitions. [2022-12-13 13:47:09,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2022-12-13 13:47:09,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2022-12-13 13:47:09,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2022-12-13 13:47:09,949 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 43 flow. Second operand 4 states and 205 transitions. [2022-12-13 13:47:09,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 77 flow [2022-12-13 13:47:09,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:47:09,949 INFO L231 Difference]: Finished difference. Result has 22 places, 13 transitions, 54 flow [2022-12-13 13:47:09,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=22, PETRI_TRANSITIONS=13} [2022-12-13 13:47:09,950 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -8 predicate places. [2022-12-13 13:47:09,950 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 13 transitions, 54 flow [2022-12-13 13:47:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2022-12-13 13:47:09,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:47:09,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:47:09,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:47:09,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-12-13 13:47:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:47:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 794683363, now seen corresponding path program 2 times [2022-12-13 13:47:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:47:09,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546178504] [2022-12-13 13:47:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:47:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:47:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:47:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:47:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:47:10,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546178504] [2022-12-13 13:47:10,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546178504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:47:10,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:47:10,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:47:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655080054] [2022-12-13 13:47:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:47:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:47:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:47:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:47:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:47:10,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 141 [2022-12-13 13:47:10,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 13 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2022-12-13 13:47:10,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:47:10,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 141 [2022-12-13 13:47:10,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:47:10,024 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 13:47:10,024 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 13:47:10,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 10 events. 0/10 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-12-13 13:47:10,024 INFO L137 encePairwiseOnDemand]: 139/141 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2022-12-13 13:47:10,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 10 transitions, 60 flow [2022-12-13 13:47:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:47:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:47:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2022-12-13 13:47:10,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3640661938534279 [2022-12-13 13:47:10,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2022-12-13 13:47:10,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2022-12-13 13:47:10,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:47:10,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2022-12-13 13:47:10,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-12-13 13:47:10,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-12-13 13:47:10,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2022-12-13 13:47:10,027 INFO L175 Difference]: Start difference. First operand has 22 places, 13 transitions, 54 flow. Second operand 3 states and 154 transitions. [2022-12-13 13:47:10,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 10 transitions, 60 flow [2022-12-13 13:47:10,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 49 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 13:47:10,028 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2022-12-13 13:47:10,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2022-12-13 13:47:10,028 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -11 predicate places. [2022-12-13 13:47:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2022-12-13 13:47:10,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2022-12-13 13:47:10,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2022-12-13 13:47:10,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2022-12-13 13:47:10,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2022-12-13 13:47:10,031 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2022-12-13 13:47:10,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2022-12-13 13:47:10,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2022-12-13 13:47:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:47:10,034 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-13 13:47:10,037 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:47:10,037 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:47:10,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:47:10 BasicIcfg [2022-12-13 13:47:10,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:47:10,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:47:10,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:47:10,041 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:47:10,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:47:08" (3/4) ... [2022-12-13 13:47:10,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:47:10,047 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 13:47:10,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 72 nodes and edges [2022-12-13 13:47:10,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 13:47:10,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:47:10,051 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:47:10,079 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:47:10,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:47:10,080 INFO L158 Benchmark]: Toolchain (without parser) took 2808.42ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 98.3MB in the beginning and 93.3MB in the end (delta: 5.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,080 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:47:10,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.28ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 76.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.80ms. Allocated memory is still 140.5MB. Free memory was 76.9MB in the beginning and 74.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,081 INFO L158 Benchmark]: Boogie Preprocessor took 23.29ms. Allocated memory is still 140.5MB. Free memory was 74.7MB in the beginning and 73.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,082 INFO L158 Benchmark]: RCFGBuilder took 388.02ms. Allocated memory is still 140.5MB. Free memory was 73.1MB in the beginning and 102.7MB in the end (delta: -29.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,082 INFO L158 Benchmark]: TraceAbstraction took 1917.77ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 102.2MB in the beginning and 96.5MB in the end (delta: 5.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,083 INFO L158 Benchmark]: Witness Printer took 38.62ms. Allocated memory is still 169.9MB. Free memory was 96.5MB in the beginning and 93.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:47:10,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 107.0MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.28ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 76.9MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.80ms. Allocated memory is still 140.5MB. Free memory was 76.9MB in the beginning and 74.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.29ms. Allocated memory is still 140.5MB. Free memory was 74.7MB in the beginning and 73.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 388.02ms. Allocated memory is still 140.5MB. Free memory was 73.1MB in the beginning and 102.7MB in the end (delta: -29.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1917.77ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 102.2MB in the beginning and 96.5MB in the end (delta: 5.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 38.62ms. Allocated memory is still 169.9MB. Free memory was 96.5MB in the beginning and 93.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 76 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 26 TransitionsAfterwards, 1110 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 3029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1542, independent: 1391, independent conditional: 0, independent unconditional: 1391, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 545, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1542, independent: 887, independent conditional: 0, independent unconditional: 887, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 545, unknown conditional: 0, unknown unconditional: 545] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 707]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 708]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 709]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 713]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 715]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 721]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 722]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 722]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 727]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 730]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 733]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 736]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 740]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 743]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:47:10,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eacee8c-4bc8-4fdf-ac2a-cc0f22f699ab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE