./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 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_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl --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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:46,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:46,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-12 02:17:46,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:46,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:46,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:46,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:46,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:46,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:46,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:46,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:46,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:46,939 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:46,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:46,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:46,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:46,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:46,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:46,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:46,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:46,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:46,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:46,945 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 02:17:46,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:46,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:46,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:46,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:46,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:46,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:46,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:46,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:46,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:46,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:46,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:46,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:46,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:46,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:46,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:46,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:46,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:46,952 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:46,952 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_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2023-11-12 02:17:47,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:47,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:47,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:47,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:47,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:47,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-12 02:17:50,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:50,982 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:50,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-12 02:17:51,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/data/d478ed0fe/79636cb1d3374b5da2842339b4d59ab7/FLAGd5eed5a77 [2023-11-12 02:17:51,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/data/d478ed0fe/79636cb1d3374b5da2842339b4d59ab7 [2023-11-12 02:17:51,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:51,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:51,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:51,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:51,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:51,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7166e268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51, skipping insertion in model container [2023-11-12 02:17:51,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:51,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:51,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:51,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:51,856 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:51,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51 WrapperNode [2023-11-12 02:17:51,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:51,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:51,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:51,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:51,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,932 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 274 [2023-11-12 02:17:51,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:51,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:51,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:51,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:51,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:51,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:51,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:51,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:51,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (1/1) ... [2023-11-12 02:17:51,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:52,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:52,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d89eef0d-adce-44ce-8220-4d372d014d28/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:17:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:17:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:17:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:52,088 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:52,250 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:52,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:52,837 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:52,848 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:52,848 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-11-12 02:17:52,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:52 BoogieIcfgContainer [2023-11-12 02:17:52,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:52,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:52,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:52,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:52,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:51" (1/3) ... [2023-11-12 02:17:52,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29436e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:52, skipping insertion in model container [2023-11-12 02:17:52,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:51" (2/3) ... [2023-11-12 02:17:52,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29436e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:52, skipping insertion in model container [2023-11-12 02:17:52,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:52" (3/3) ... [2023-11-12 02:17:52,868 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-11-12 02:17:52,879 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:52,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:52,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:17:52,892 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:53,024 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:17:53,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 289 transitions, 585 flow [2023-11-12 02:17:53,277 INFO L124 PetriNetUnfolderBase]: 46/408 cut-off events. [2023-11-12 02:17:53,277 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:17:53,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 408 events. 46/408 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1699 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2023-11-12 02:17:53,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 289 transitions, 585 flow [2023-11-12 02:17:53,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 287 transitions, 581 flow [2023-11-12 02:17:53,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:53,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 287 transitions, 581 flow [2023-11-12 02:17:53,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 287 transitions, 581 flow [2023-11-12 02:17:53,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 287 transitions, 581 flow [2023-11-12 02:17:53,432 INFO L124 PetriNetUnfolderBase]: 45/406 cut-off events. [2023-11-12 02:17:53,433 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:17:53,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 406 events. 45/406 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1720 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2023-11-12 02:17:53,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 24250 [2023-11-12 02:18:01,908 INFO L134 LiptonReduction]: Checked pairs total: 111372 [2023-11-12 02:18:01,909 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-12 02:18:01,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:01,948 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;@6b6b7218, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:01,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-12 02:18:01,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:01,957 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-11-12 02:18:01,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:01,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:01,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:18:01,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-12 02:18:01,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 285579061, now seen corresponding path program 1 times [2023-11-12 02:18:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298356794] [2023-11-12 02:18:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:01,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:18:02,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:18:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:18:02,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:18:02,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:18:02,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-12 02:18:02,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-12 02:18:02,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-12 02:18:02,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-12 02:18:02,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-12 02:18:02,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-12 02:18:02,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-12 02:18:02,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-12 02:18:02,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-12 02:18:02,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-12 02:18:02,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-12 02:18:02,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-12 02:18:02,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-12 02:18:02,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-12 02:18:02,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-12 02:18:02,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-12 02:18:02,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-12 02:18:02,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:02,336 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 02:18:02,340 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:18:02,340 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:18:02,399 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:18:02,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 388 transitions, 792 flow [2023-11-12 02:18:02,592 INFO L124 PetriNetUnfolderBase]: 77/658 cut-off events. [2023-11-12 02:18:02,592 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:18:02,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 658 events. 77/658 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3359 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 410. Up to 12 conditions per place. [2023-11-12 02:18:02,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 388 transitions, 792 flow [2023-11-12 02:18:02,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 386 transitions, 788 flow [2023-11-12 02:18:02,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:02,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 386 transitions, 788 flow [2023-11-12 02:18:02,617 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 386 transitions, 788 flow [2023-11-12 02:18:02,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 386 transitions, 788 flow [2023-11-12 02:18:02,752 INFO L124 PetriNetUnfolderBase]: 76/656 cut-off events. [2023-11-12 02:18:02,752 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:18:02,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 656 events. 76/656 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3372 event pairs, 0 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 408. Up to 12 conditions per place. [2023-11-12 02:18:02,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 69452 [2023-11-12 02:18:11,360 INFO L134 LiptonReduction]: Checked pairs total: 352140 [2023-11-12 02:18:11,360 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-12 02:18:11,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:11,364 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;@6b6b7218, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:11,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-12 02:18:11,373 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:11,373 INFO L124 PetriNetUnfolderBase]: 17/90 cut-off events. [2023-11-12 02:18:11,374 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:18:11,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:11,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:11,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:18:11,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash -787870027, now seen corresponding path program 1 times [2023-11-12 02:18:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044652634] [2023-11-12 02:18:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044652634] [2023-11-12 02:18:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044652634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:11,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944419051] [2023-11-12 02:18:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:11,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:11,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 635 [2023-11-12 02:18:11,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 192 transitions, 400 flow. Second operand has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2023-11-12 02:18:11,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:11,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 635 [2023-11-12 02:18:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:16,898 INFO L124 PetriNetUnfolderBase]: 14723/34627 cut-off events. [2023-11-12 02:18:16,899 INFO L125 PetriNetUnfolderBase]: For 202/280 co-relation queries the response was YES. [2023-11-12 02:18:17,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55981 conditions, 34627 events. 14723/34627 cut-off events. For 202/280 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 373443 event pairs, 13600 based on Foata normal form. 5770/37132 useless extension candidates. Maximal degree in co-relation 26692. Up to 21257 conditions per place. [2023-11-12 02:18:17,236 INFO L140 encePairwiseOnDemand]: 603/635 looper letters, 61 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2023-11-12 02:18:17,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 160 transitions, 458 flow [2023-11-12 02:18:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 779 transitions. [2023-11-12 02:18:17,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133858267716535 [2023-11-12 02:18:17,262 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 779 transitions. [2023-11-12 02:18:17,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 779 transitions. [2023-11-12 02:18:17,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:17,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 779 transitions. [2023-11-12 02:18:17,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 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) [2023-11-12 02:18:17,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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) [2023-11-12 02:18:17,296 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 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) [2023-11-12 02:18:17,298 INFO L175 Difference]: Start difference. First operand has 160 places, 192 transitions, 400 flow. Second operand 2 states and 779 transitions. [2023-11-12 02:18:17,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 160 transitions, 458 flow [2023-11-12 02:18:17,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:17,315 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 336 flow [2023-11-12 02:18:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2023-11-12 02:18:17,321 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-11-12 02:18:17,326 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 336 flow [2023-11-12 02:18:17,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 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) [2023-11-12 02:18:17,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:17,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:17,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:17,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:18:17,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash 555213769, now seen corresponding path program 1 times [2023-11-12 02:18:17,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:17,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756795816] [2023-11-12 02:18:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:17,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:17,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756795816] [2023-11-12 02:18:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756795816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884773697] [2023-11-12 02:18:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:18,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 635 [2023-11-12 02:18:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 296.5) internal successors, (1779), 6 states have internal predecessors, (1779), 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) [2023-11-12 02:18:18,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:18,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 635 [2023-11-12 02:18:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:31,827 INFO L124 PetriNetUnfolderBase]: 74124/131734 cut-off events. [2023-11-12 02:18:31,828 INFO L125 PetriNetUnfolderBase]: For 406/425 co-relation queries the response was YES. [2023-11-12 02:18:32,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242800 conditions, 131734 events. 74124/131734 cut-off events. For 406/425 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 1303107 event pairs, 37379 based on Foata normal form. 6/122641 useless extension candidates. Maximal degree in co-relation 242795. Up to 81105 conditions per place. [2023-11-12 02:18:32,867 INFO L140 encePairwiseOnDemand]: 598/635 looper letters, 226 selfloop transitions, 82 changer transitions 0/371 dead transitions. [2023-11-12 02:18:32,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 371 transitions, 1380 flow [2023-11-12 02:18:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2081 transitions. [2023-11-12 02:18:32,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461942257217848 [2023-11-12 02:18:32,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2081 transitions. [2023-11-12 02:18:32,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2081 transitions. [2023-11-12 02:18:32,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:32,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2081 transitions. [2023-11-12 02:18:32,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 346.8333333333333) internal successors, (2081), 6 states have internal predecessors, (2081), 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) [2023-11-12 02:18:32,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 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) [2023-11-12 02:18:32,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 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) [2023-11-12 02:18:32,905 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 336 flow. Second operand 6 states and 2081 transitions. [2023-11-12 02:18:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 371 transitions, 1380 flow [2023-11-12 02:18:32,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 371 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:32,926 INFO L231 Difference]: Finished difference. Result has 171 places, 239 transitions, 890 flow [2023-11-12 02:18:32,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=171, PETRI_TRANSITIONS=239} [2023-11-12 02:18:32,928 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 11 predicate places. [2023-11-12 02:18:32,928 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 239 transitions, 890 flow [2023-11-12 02:18:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.5) internal successors, (1779), 6 states have internal predecessors, (1779), 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) [2023-11-12 02:18:32,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:32,930 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:18:32,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:32,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-12 02:18:32,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2138912622, now seen corresponding path program 1 times [2023-11-12 02:18:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:32,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738830106] [2023-11-12 02:18:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:18:32,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:18:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:18:33,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:18:33,013 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:18:33,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-12 02:18:33,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-12 02:18:33,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-12 02:18:33,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-12 02:18:33,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-12 02:18:33,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-12 02:18:33,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-12 02:18:33,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-12 02:18:33,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-12 02:18:33,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-12 02:18:33,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-12 02:18:33,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-12 02:18:33,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-12 02:18:33,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-12 02:18:33,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-12 02:18:33,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-12 02:18:33,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-12 02:18:33,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-12 02:18:33,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-12 02:18:33,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-12 02:18:33,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-12 02:18:33,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-12 02:18:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:33,021 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-12 02:18:33,022 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:18:33,022 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:18:33,106 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:18:33,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 487 transitions, 1001 flow [2023-11-12 02:18:33,453 INFO L124 PetriNetUnfolderBase]: 113/955 cut-off events. [2023-11-12 02:18:33,454 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:18:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 955 events. 113/955 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5340 event pairs, 1 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 666. Up to 16 conditions per place. [2023-11-12 02:18:33,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 487 transitions, 1001 flow [2023-11-12 02:18:33,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 485 transitions, 997 flow [2023-11-12 02:18:33,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:33,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 485 transitions, 997 flow [2023-11-12 02:18:33,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 485 transitions, 997 flow [2023-11-12 02:18:33,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 485 transitions, 997 flow [2023-11-12 02:18:33,790 INFO L124 PetriNetUnfolderBase]: 112/953 cut-off events. [2023-11-12 02:18:33,790 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-12 02:18:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 953 events. 112/953 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5377 event pairs, 1 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 664. Up to 16 conditions per place. [2023-11-12 02:18:33,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 133278