./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:05,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:05,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:55:05,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:05,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:05,300 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:05,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:05,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:05,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:05,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:05,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:05,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:05,315 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:05,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:05,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:05,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:05,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:05,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:05,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:05,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:05,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:05,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:05,320 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:55:05,321 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:55:05,321 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:05,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:05,322 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:05,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:05,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:05,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:05,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:05,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:05,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:05,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:05,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:05,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:05,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:05,328 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:05,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:05,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:05,329 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:05,329 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_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 [2023-11-19 07:55:05,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:05,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:05,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:05,709 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:05,710 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:05,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2023-11-19 07:55:08,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:09,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:09,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2023-11-19 07:55:09,334 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/data/90b286e60/290ff08d609c46d281f43f522b7b1642/FLAGf073be9b3 [2023-11-19 07:55:09,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/data/90b286e60/290ff08d609c46d281f43f522b7b1642 [2023-11-19 07:55:09,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:09,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:09,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:09,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:09,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:09,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:09" (1/1) ... [2023-11-19 07:55:09,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1b0a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:09, skipping insertion in model container [2023-11-19 07:55:09,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:09" (1/1) ... [2023-11-19 07:55:09,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:09,653 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:55:09,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:09,950 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:09,963 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:55:09,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:10,033 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:55:10,042 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:10,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10 WrapperNode [2023-11-19 07:55:10,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:10,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:10,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:10,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:10,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,095 INFO L138 Inliner]: procedures = 169, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-11-19 07:55:10,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:10,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:10,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:10,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:10,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:10,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:10,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:10,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:10,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (1/1) ... [2023-11-19 07:55:10,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:10,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:10,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:55:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:55:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:55:10,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:55:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:55:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:55:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:10,210 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:55:10,339 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:10,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:10,683 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:10,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:10,693 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:10,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:10 BoogieIcfgContainer [2023-11-19 07:55:10,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:10,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:10,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:10,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:10,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:09" (1/3) ... [2023-11-19 07:55:10,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4edb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:10, skipping insertion in model container [2023-11-19 07:55:10,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:10" (2/3) ... [2023-11-19 07:55:10,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4edb4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:10, skipping insertion in model container [2023-11-19 07:55:10,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:10" (3/3) ... [2023-11-19 07:55:10,707 INFO L112 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2023-11-19 07:55:10,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:55:10,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:10,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 07:55:10,739 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:55:10,820 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:55:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 185 flow [2023-11-19 07:55:10,924 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2023-11-19 07:55:10,924 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:55:10,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 4/88 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-19 07:55:10,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 89 transitions, 185 flow [2023-11-19 07:55:10,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 81 transitions, 165 flow [2023-11-19 07:55:10,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:10,951 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 81 transitions, 165 flow [2023-11-19 07:55:10,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 81 transitions, 165 flow [2023-11-19 07:55:10,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 81 transitions, 165 flow [2023-11-19 07:55:10,984 INFO L124 PetriNetUnfolderBase]: 4/81 cut-off events. [2023-11-19 07:55:10,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:10,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 81 events. 4/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-19 07:55:10,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 920 [2023-11-19 07:55:16,075 INFO L134 LiptonReduction]: Checked pairs total: 1512 [2023-11-19 07:55:16,075 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-11-19 07:55:16,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:16,125 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e520fde, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:16,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:55:16,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:16,135 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:55:16,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:16,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:16,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:55:16,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:55:16,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash 9928187, now seen corresponding path program 1 times [2023-11-19 07:55:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876382412] [2023-11-19 07:55:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:16,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876382412] [2023-11-19 07:55:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876382412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:16,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:55:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761472744] [2023-11-19 07:55:16,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:16,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:55:16,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:55:16,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:16,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 167 [2023-11-19 07:55:16,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:16,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 167 [2023-11-19 07:55:16,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:16,511 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-11-19 07:55:16,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:16,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 30 events. 9/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 6 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 48. Up to 23 conditions per place. [2023-11-19 07:55:16,513 INFO L140 encePairwiseOnDemand]: 165/167 looper letters, 8 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:55:16,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 43 flow [2023-11-19 07:55:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:55:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:55:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 178 transitions. [2023-11-19 07:55:16,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329341317365269 [2023-11-19 07:55:16,540 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 178 transitions. [2023-11-19 07:55:16,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 178 transitions. [2023-11-19 07:55:16,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:16,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 178 transitions. [2023-11-19 07:55:16,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 89.0) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,564 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,566 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 31 flow. Second operand 2 states and 178 transitions. [2023-11-19 07:55:16,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 43 flow [2023-11-19 07:55:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:16,573 INFO L231 Difference]: Finished difference. Result has 15 places, 12 transitions, 26 flow [2023-11-19 07:55:16,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=12} [2023-11-19 07:55:16,582 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-11-19 07:55:16,583 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 12 transitions, 26 flow [2023-11-19 07:55:16,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:16,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:55:16,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:55:16,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:55:16,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash 9928355, now seen corresponding path program 1 times [2023-11-19 07:55:16,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:16,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312363143] [2023-11-19 07:55:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:16,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312363143] [2023-11-19 07:55:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312363143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:16,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506846625] [2023-11-19 07:55:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:16,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:16,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:16,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:16,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 167 [2023-11-19 07:55:16,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:16,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 167 [2023-11-19 07:55:16,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:16,811 INFO L124 PetriNetUnfolderBase]: 28/69 cut-off events. [2023-11-19 07:55:16,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:16,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 69 events. 28/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 3 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 136. Up to 35 conditions per place. [2023-11-19 07:55:16,813 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 14 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2023-11-19 07:55:16,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 19 transitions, 76 flow [2023-11-19 07:55:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-19 07:55:16,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169660678642715 [2023-11-19 07:55:16,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-19 07:55:16,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-19 07:55:16,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:16,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-19 07:55:16,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,827 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 26 flow. Second operand 3 states and 259 transitions. [2023-11-19 07:55:16,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 19 transitions, 76 flow [2023-11-19 07:55:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:16,829 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 48 flow [2023-11-19 07:55:16,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, 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=48, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2023-11-19 07:55:16,830 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-11-19 07:55:16,830 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 48 flow [2023-11-19 07:55:16,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:16,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:55:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:55:16,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:55:16,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash 951033200, now seen corresponding path program 1 times [2023-11-19 07:55:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:16,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118506571] [2023-11-19 07:55:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:16,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:16,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118506571] [2023-11-19 07:55:16,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118506571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608174315] [2023-11-19 07:55:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:16,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 167 [2023-11-19 07:55:16,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:16,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 167 [2023-11-19 07:55:16,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:16,967 INFO L124 PetriNetUnfolderBase]: 23/59 cut-off events. [2023-11-19 07:55:16,968 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2023-11-19 07:55:16,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 59 events. 23/59 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 163 event pairs, 10 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 144. Up to 44 conditions per place. [2023-11-19 07:55:16,969 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 9 selfloop transitions, 4 changer transitions 2/17 dead transitions. [2023-11-19 07:55:16,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 86 flow [2023-11-19 07:55:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:16,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-19 07:55:16,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48303393213572854 [2023-11-19 07:55:16,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-19 07:55:16,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-19 07:55:16,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:16,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-19 07:55:16,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,978 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 48 flow. Second operand 3 states and 242 transitions. [2023-11-19 07:55:16,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 86 flow [2023-11-19 07:55:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:16,980 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 62 flow [2023-11-19 07:55:16,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-11-19 07:55:16,981 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 4 predicate places. [2023-11-19 07:55:16,981 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 62 flow [2023-11-19 07:55:16,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:16,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:16,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:55:16,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:55:16,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:16,984 INFO L85 PathProgramCache]: Analyzing trace with hash -581903120, now seen corresponding path program 1 times [2023-11-19 07:55:16,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:16,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583015756] [2023-11-19 07:55:16,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:16,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:55:17,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:55:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:55:17,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:55:17,094 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:55:17,095 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 5 remaining) [2023-11-19 07:55:17,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:55:17,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:55:17,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-19 07:55:17,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:55:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:55:17,101 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:55:17,108 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:55:17,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:55:17,132 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-19 07:55:17,135 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-19 07:55:17,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:55:17 BasicIcfg [2023-11-19 07:55:17,146 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:55:17,147 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:55:17,147 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:55:17,147 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:55:17,148 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:10" (3/4) ... [2023-11-19 07:55:17,150 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:55:17,152 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:55:17,158 INFO L158 Benchmark]: Toolchain (without parser) took 7796.47ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 123.1MB in the beginning and 98.3MB in the end (delta: 24.9MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,158 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 57.1MB in the beginning and 56.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:55:17,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.23ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 103.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.47ms. Allocated memory is still 167.8MB. Free memory was 103.1MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,160 INFO L158 Benchmark]: Boogie Preprocessor took 33.61ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 99.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,164 INFO L158 Benchmark]: RCFGBuilder took 566.32ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 135.6MB in the end (delta: -36.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,173 INFO L158 Benchmark]: TraceAbstraction took 6446.50ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 135.0MB in the beginning and 98.3MB in the end (delta: 36.7MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2023-11-19 07:55:17,174 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 209.7MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:55:17,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 57.1MB in the beginning and 56.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.23ms. Allocated memory is still 167.8MB. Free memory was 123.1MB in the beginning and 103.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.47ms. Allocated memory is still 167.8MB. Free memory was 103.1MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.61ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 99.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.32ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 135.6MB in the end (delta: -36.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6446.50ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 135.0MB in the beginning and 98.3MB in the end (delta: 36.7MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 209.7MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 81 PlacesBefore, 16 PlacesAfterwards, 81 TransitionsBefore, 14 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 1512 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 902, independent: 815, independent conditional: 0, independent unconditional: 815, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 521, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 902, independent: 311, independent conditional: 0, independent unconditional: 311, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 521, unknown conditional: 0, unknown unconditional: 521] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 704]: Data race detected [2023-11-19 07:55:17,190 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-19 07:55:17,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-19 07:55:17,198 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-19 07:55:17,199 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated Data race detected The following path leads to a data race: [L697] 0 pthread_mutex_t lock; [L698] 0 pthread_cond_t cond; [L699] 0 int x; [L709] 0 pthread_t t; [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [cond={4:0}, lock={3:0}, t={7:0}, x=0] [L713] 0 int i = 0; VAL [cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L704] 1 x == 42 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] [L713] COND TRUE 0 i <= 42 [L714] 0 x = i VAL [cond={4:0}, i=0, lock={3:0}, t={7:0}, x=0] [L704] 1 x == 42 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] Now there is a data race on ~x~0 between C: x = i [714] and C: x == 42 [704] - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 106 locations, 5 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: 6.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 12 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=3, InterpolantAutomatonStates: 8, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-19 07:55:17,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a46e581-efa6-4880-a3fd-11992d1a05df/bin/uautomizer-verify-uCwYo4JHxu/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE