./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP --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 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:37,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:37,978 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 23:08:37,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:37,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:38,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:38,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:38,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:38,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:38,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:38,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:38,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:38,019 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:38,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:38,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:08:38,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:08:38,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:38,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:08:38,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:38,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:08:38,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:38,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:08:38,025 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 23:08:38,026 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:08:38,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:08:38,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:08:38,027 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:38,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:38,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:38,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:38,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:38,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:38,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:38,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:08:38,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:08:38,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:08:38,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:38,033 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:08:38,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:38,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:38,034 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:38,035 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_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2023-11-06 23:08:38,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:38,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:38,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:38,343 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:38,344 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:38,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2023-11-06 23:08:41,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:41,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:41,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2023-11-06 23:08:41,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/data/19c32b379/4b42096abcc04a758457ac9b2b9efe28/FLAGd13a91544 [2023-11-06 23:08:42,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/data/19c32b379/4b42096abcc04a758457ac9b2b9efe28 [2023-11-06 23:08:42,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:42,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:42,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:42,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:42,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:42,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:42,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1e6737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42, skipping insertion in model container [2023-11-06 23:08:42,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:42,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:42,391 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:08:42,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:42,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:42,737 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 23:08:42,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:42,853 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:42,860 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:42,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42 WrapperNode [2023-11-06 23:08:42,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:42,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:42,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:42,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:42,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:42,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:42,987 INFO L138 Inliner]: procedures = 174, calls = 87, calls flagged for inlining = 21, calls inlined = 37, statements flattened = 900 [2023-11-06 23:08:42,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:42,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:42,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:42,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:43,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:43,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:43,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:43,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:43,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (1/1) ... [2023-11-06 23:08:43,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:43,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:43,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43eade0-354c-4a0e-86f0-f6700fd28d80/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:08:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:08:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:08:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2023-11-06 23:08:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2023-11-06 23:08:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:08:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:08:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:08:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:43,324 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 23:08:43,553 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:43,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:44,952 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:08:44,974 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:08:44,975 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 23:08:44,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:44 BoogieIcfgContainer [2023-11-06 23:08:44,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:08:44,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:08:44,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:08:44,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:08:44,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:42" (1/3) ... [2023-11-06 23:08:44,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a4953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:44, skipping insertion in model container [2023-11-06 23:08:44,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:42" (2/3) ... [2023-11-06 23:08:44,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a4953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:44, skipping insertion in model container [2023-11-06 23:08:44,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:44" (3/3) ... [2023-11-06 23:08:44,992 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2023-11-06 23:08:45,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:08:45,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:08:45,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2023-11-06 23:08:45,013 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:08:45,334 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 23:08:45,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:46,395 INFO L124 PetriNetUnfolderBase]: 137/1577 cut-off events. [2023-11-06 23:08:46,395 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:08:46,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1577 events. 137/1577 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 5837 event pairs, 0 based on Foata normal form. 0/1322 useless extension candidates. Maximal degree in co-relation 935. Up to 4 conditions per place. [2023-11-06 23:08:46,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:46,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:46,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:08:46,534 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:46,539 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:46,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 988 places, 1076 transitions, 2159 flow [2023-11-06 23:08:47,264 INFO L124 PetriNetUnfolderBase]: 137/1577 cut-off events. [2023-11-06 23:08:47,264 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:08:47,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1577 events. 137/1577 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 5837 event pairs, 0 based on Foata normal form. 0/1322 useless extension candidates. Maximal degree in co-relation 935. Up to 4 conditions per place. [2023-11-06 23:08:47,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 435006 [2023-11-06 23:09:23,374 WARN L293 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 109 DAG size of output: 107 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:09:30,735 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 109 DAG size of output: 107 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:09:48,270 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 120 DAG size of output: 117 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:10:42,475 WARN L293 SmtUtils]: Spent 50.57s on a formula simplification. DAG size of input: 170 DAG size of output: 166 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:10:58,017 WARN L293 SmtUtils]: Spent 15.54s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:12:14,769 WARN L293 SmtUtils]: Spent 1.28m on a formula simplification. DAG size of input: 176 DAG size of output: 172 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:12:32,534 WARN L293 SmtUtils]: Spent 17.76s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)