./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.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_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/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_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/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_391aaf50-03b5-458e-98a5-57da4645dc54/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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:12,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:12,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:49:12,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:12,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:12,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:12,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:12,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:12,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:12,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:12,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:12,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:12,995 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:12,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:12,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:12,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:12,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:12,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:12,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:12,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:13,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:13,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:13,001 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:49:13,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:49:13,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:13,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:13,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:13,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:13,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:13,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:13,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:13,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:13,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:13,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:13,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:13,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:13,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:13,012 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:13,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:13,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:13,012 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:13,013 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_391aaf50-03b5-458e-98a5-57da4645dc54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2023-11-19 07:49:13,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:13,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:13,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:13,329 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:13,330 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:13,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-19 07:49:16,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:16,969 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:16,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-19 07:49:16,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/data/d8989d4ac/0e30bdbea64f462194bdbc81461dc39a/FLAG1151ad99e [2023-11-19 07:49:17,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/data/d8989d4ac/0e30bdbea64f462194bdbc81461dc39a [2023-11-19 07:49:17,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:17,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:17,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:17,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:17,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:17,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb4d616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17, skipping insertion in model container [2023-11-19 07:49:17,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,078 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:17,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:17,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:17,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:17,652 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:17,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17 WrapperNode [2023-11-19 07:49:17,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:17,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:17,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:17,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:17,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,724 INFO L138 Inliner]: procedures = 171, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 156 [2023-11-19 07:49:17,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:17,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:17,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:17,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:17,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:17,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:17,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:17,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:17,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (1/1) ... [2023-11-19 07:49:17,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:17,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:17,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391aaf50-03b5-458e-98a5-57da4645dc54/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:17,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:49:17,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:49:17,929 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:49:17,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-19 07:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:17,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:17,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:17,932 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 07:49:18,151 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:18,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:18,636 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:18,647 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:18,648 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:49:18,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:18 BoogieIcfgContainer [2023-11-19 07:49:18,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:18,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:18,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:18,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:18,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:17" (1/3) ... [2023-11-19 07:49:18,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b903bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:18, skipping insertion in model container [2023-11-19 07:49:18,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:17" (2/3) ... [2023-11-19 07:49:18,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b903bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:18, skipping insertion in model container [2023-11-19 07:49:18,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:18" (3/3) ... [2023-11-19 07:49:18,670 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-11-19 07:49:18,680 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:18,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:18,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 07:49:18,693 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:18,822 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:49:18,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,071 INFO L124 PetriNetUnfolderBase]: 53/390 cut-off events. [2023-11-19 07:49:19,073 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:19,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 390 events. 53/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1924 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 220. Up to 6 conditions per place. [2023-11-19 07:49:19,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:19,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 260 transitions, 527 flow [2023-11-19 07:49:19,271 INFO L124 PetriNetUnfolderBase]: 53/390 cut-off events. [2023-11-19 07:49:19,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 390 events. 53/390 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1924 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 220. Up to 6 conditions per place. [2023-11-19 07:49:19,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 23120 [2023-11-19 07:49:24,909 INFO L134 LiptonReduction]: Checked pairs total: 73262 [2023-11-19 07:49:24,909 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-11-19 07:49:24,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:24,934 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;@67aea4c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:24,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:49:24,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:24,941 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-11-19 07:49:24,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:24,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:24,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:49:24,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:49:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 937272981, now seen corresponding path program 1 times [2023-11-19 07:49:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:24,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025024278] [2023-11-19 07:49:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:25,270 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 07:49:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025024278] [2023-11-19 07:49:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025024278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737317219] [2023-11-19 07:49:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:25,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 473 [2023-11-19 07:49:25,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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 07:49:25,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:25,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 473 [2023-11-19 07:49:25,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:25,747 INFO L124 PetriNetUnfolderBase]: 505/1429 cut-off events. [2023-11-19 07:49:25,747 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:49:25,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 1429 events. 505/1429 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8673 event pairs, 0 based on Foata normal form. 209/1456 useless extension candidates. Maximal degree in co-relation 2426. Up to 1010 conditions per place. [2023-11-19 07:49:25,761 INFO L140 encePairwiseOnDemand]: 446/473 looper letters, 70 selfloop transitions, 2 changer transitions 2/107 dead transitions. [2023-11-19 07:49:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 369 flow [2023-11-19 07:49:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 762 transitions. [2023-11-19 07:49:25,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369978858350951 [2023-11-19 07:49:25,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 762 transitions. [2023-11-19 07:49:25,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 762 transitions. [2023-11-19 07:49:25,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:25,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 762 transitions. [2023-11-19 07:49:25,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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 07:49:25,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 07:49:25,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 473.0) internal successors, (1892), 4 states have internal predecessors, (1892), 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 07:49:25,817 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 219 flow. Second operand 3 states and 762 transitions. [2023-11-19 07:49:25,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 369 flow [2023-11-19 07:49:25,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 369 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:25,830 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 172 flow [2023-11-19 07:49:25,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=473, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-11-19 07:49:25,839 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-19 07:49:25,839 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 172 flow [2023-11-19 07:49:25,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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 07:49:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:25,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:49:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:25,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:49:25,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1019241345, now seen corresponding path program 1 times [2023-11-19 07:49:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585612464] [2023-11-19 07:49:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:25,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:25,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:49:25,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:49:25,977 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:49:25,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:49:25,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:49:25,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:49:25,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:49:25,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:49:25,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:49:25,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:49:25,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:49:25,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:49:25,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:49:25,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:49:25,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:49:25,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:49:25,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:49:25,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:49:25,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:49:25,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:49:25,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:49:25,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:49:25,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:49:25,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:49:25,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:25,997 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:49:26,000 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:49:26,000 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:49:26,061 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:49:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,189 INFO L124 PetriNetUnfolderBase]: 88/639 cut-off events. [2023-11-19 07:49:26,190 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:49:26,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 639 events. 88/639 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3478 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 392. Up to 9 conditions per place. [2023-11-19 07:49:26,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,208 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:26,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 347 transitions, 710 flow [2023-11-19 07:49:26,338 INFO L124 PetriNetUnfolderBase]: 88/639 cut-off events. [2023-11-19 07:49:26,338 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:49:26,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 639 events. 88/639 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3478 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 392. Up to 9 conditions per place. [2023-11-19 07:49:26,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 62560 [2023-11-19 07:49:31,386 INFO L134 LiptonReduction]: Checked pairs total: 251809 [2023-11-19 07:49:31,386 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-11-19 07:49:31,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:31,390 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;@67aea4c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:31,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 07:49:31,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:31,394 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-19 07:49:31,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:31,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:31,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:49:31,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 07:49:31,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1579624262, now seen corresponding path program 1 times [2023-11-19 07:49:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194571585] [2023-11-19 07:49:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:31,455 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 07:49:31,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:31,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194571585] [2023-11-19 07:49:31,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194571585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:31,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:31,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:31,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606994254] [2023-11-19 07:49:31,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:31,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:31,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:31,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 591 [2023-11-19 07:49:31,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 172 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 07:49:31,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:31,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 591 [2023-11-19 07:49:31,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:37,107 INFO L124 PetriNetUnfolderBase]: 18204/37627 cut-off events. [2023-11-19 07:49:37,107 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-19 07:49:37,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65757 conditions, 37627 events. 18204/37627 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 357228 event pairs, 17239 based on Foata normal form. 5924/40021 useless extension candidates. Maximal degree in co-relation 54071. Up to 27995 conditions per place. [2023-11-19 07:49:37,515 INFO L140 encePairwiseOnDemand]: 552/591 looper letters, 87 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2023-11-19 07:49:37,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 158 transitions, 510 flow [2023-11-19 07:49:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-11-19 07:49:37,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685279187817259 [2023-11-19 07:49:37,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-11-19 07:49:37,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-11-19 07:49:37,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:37,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-11-19 07:49:37,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 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 07:49:37,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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 07:49:37,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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 07:49:37,539 INFO L175 Difference]: Start difference. First operand has 139 places, 172 transitions, 360 flow. Second operand 3 states and 1008 transitions. [2023-11-19 07:49:37,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 158 transitions, 510 flow [2023-11-19 07:49:37,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 158 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:49:37,549 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 300 flow [2023-11-19 07:49:37,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2023-11-19 07:49:37,551 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 2 predicate places. [2023-11-19 07:49:37,552 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 300 flow [2023-11-19 07:49:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 07:49:37,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:37,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:37,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 07:49:37,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1688978824, now seen corresponding path program 1 times [2023-11-19 07:49:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195881028] [2023-11-19 07:49:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:37,623 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 07:49:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195881028] [2023-11-19 07:49:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195881028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:37,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:37,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:37,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838249104] [2023-11-19 07:49:37,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:37,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:37,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:37,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:37,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:37,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 591 [2023-11-19 07:49:37,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 07:49:37,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:37,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 591 [2023-11-19 07:49:37,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:50,224 INFO L124 PetriNetUnfolderBase]: 66637/125065 cut-off events. [2023-11-19 07:49:50,224 INFO L125 PetriNetUnfolderBase]: For 2004/2004 co-relation queries the response was YES. [2023-11-19 07:49:50,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230403 conditions, 125065 events. 66637/125065 cut-off events. For 2004/2004 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 1261649 event pairs, 22335 based on Foata normal form. 0/114442 useless extension candidates. Maximal degree in co-relation 230219. Up to 53381 conditions per place. [2023-11-19 07:49:50,921 INFO L140 encePairwiseOnDemand]: 566/591 looper letters, 149 selfloop transitions, 18 changer transitions 0/216 dead transitions. [2023-11-19 07:49:50,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 810 flow [2023-11-19 07:49:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:49:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2023-11-19 07:49:50,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-19 07:49:50,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2023-11-19 07:49:50,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2023-11-19 07:49:50,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:50,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2023-11-19 07:49:50,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 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 07:49:50,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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 07:49:50,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 591.0) internal successors, (2364), 4 states have internal predecessors, (2364), 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 07:49:50,937 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 300 flow. Second operand 3 states and 985 transitions. [2023-11-19 07:49:50,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 810 flow [2023-11-19 07:49:50,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 216 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:50,951 INFO L231 Difference]: Finished difference. Result has 144 places, 155 transitions, 456 flow [2023-11-19 07:49:50,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=591, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=144, PETRI_TRANSITIONS=155} [2023-11-19 07:49:50,953 INFO L281 CegarLoopForPetriNet]: 139 programPoint places, 5 predicate places. [2023-11-19 07:49:50,953 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 155 transitions, 456 flow [2023-11-19 07:49:50,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 07:49:50,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:50,954 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:49:50,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:50,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-19 07:49:50,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -56490995, now seen corresponding path program 1 times [2023-11-19 07:49:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:50,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433377062] [2023-11-19 07:49:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:51,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:49:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:49:51,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:49:51,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:49:51,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-11-19 07:49:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-11-19 07:49:51,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-11-19 07:49:51,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-11-19 07:49:51,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-11-19 07:49:51,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-11-19 07:49:51,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-11-19 07:49:51,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-11-19 07:49:51,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-11-19 07:49:51,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-11-19 07:49:51,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-11-19 07:49:51,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-11-19 07:49:51,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-11-19 07:49:51,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-11-19 07:49:51,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-11-19 07:49:51,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-11-19 07:49:51,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-11-19 07:49:51,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-11-19 07:49:51,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-11-19 07:49:51,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-11-19 07:49:51,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-11-19 07:49:51,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-11-19 07:49:51,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-11-19 07:49:51,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-11-19 07:49:51,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-11-19 07:49:51,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-11-19 07:49:51,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-11-19 07:49:51,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-11-19 07:49:51,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-11-19 07:49:51,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-11-19 07:49:51,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:51,058 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:49:51,059 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:49:51,059 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:49:51,110 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:49:51,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,317 INFO L124 PetriNetUnfolderBase]: 128/935 cut-off events. [2023-11-19 07:49:51,317 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:49:51,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 935 events. 128/935 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5269 event pairs, 1 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2023-11-19 07:49:51,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:51,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,352 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 434 transitions, 895 flow [2023-11-19 07:49:51,522 INFO L124 PetriNetUnfolderBase]: 128/935 cut-off events. [2023-11-19 07:49:51,522 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:49:51,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 935 events. 128/935 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5269 event pairs, 1 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 647. Up to 16 conditions per place. [2023-11-19 07:49:51,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 116280 [2023-11-19 07:49:57,082 INFO L134 LiptonReduction]: Checked pairs total: 508012 [2023-11-19 07:49:57,082 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-11-19 07:49:57,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:57,085 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;@67aea4c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:57,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 07:49:57,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:57,088 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-11-19 07:49:57,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:49:57,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:57,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:49:57,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-19 07:49:57,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1951867381, now seen corresponding path program 1 times [2023-11-19 07:49:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50944700] [2023-11-19 07:49:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:57,146 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 07:49:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50944700] [2023-11-19 07:49:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50944700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142541286] [2023-11-19 07:49:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:57,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 711 [2023-11-19 07:49:57,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 232 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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 07:49:57,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:57,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 711 [2023-11-19 07:49:57,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand