./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:57:12,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:57:12,232 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 03:57:12,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:57:12,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:57:12,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:57:12,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:57:12,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:57:12,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:57:12,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:57:12,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:57:12,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:57:12,263 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:57:12,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:57:12,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:57:12,264 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:57:12,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:57:12,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:57:12,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:57:12,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:57:12,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:57:12,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:57:12,270 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 03:57:12,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:57:12,271 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:57:12,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:57:12,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:57:12,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:57:12,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:57:12,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:57:12,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:57:12,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:57:12,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:57:12,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:57:12,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:57:12,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:57:12,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:57:12,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:57:12,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:57:12,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:57:12,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:57:12,276 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_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2023-11-29 03:57:12,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:57:12,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:57:12,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:57:12,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:57:12,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:57:12,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-29 03:57:15,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:57:15,488 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:57:15,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-29 03:57:15,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/data/fb3fe787b/25d45533044e403b9024759b1f7148d9/FLAG33bdaa1ef [2023-11-29 03:57:15,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/data/fb3fe787b/25d45533044e403b9024759b1f7148d9 [2023-11-29 03:57:15,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:57:15,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:57:15,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:57:15,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:57:15,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:57:15,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:57:15" (1/1) ... [2023-11-29 03:57:15,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5935268e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:15, skipping insertion in model container [2023-11-29 03:57:15,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:57:15" (1/1) ... [2023-11-29 03:57:15,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:57:15,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:57:15,963 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:57:16,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:57:16,060 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:57:16,066 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:57:16,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16 WrapperNode [2023-11-29 03:57:16,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:57:16,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:57:16,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:57:16,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:57:16,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,116 INFO L138 Inliner]: procedures = 274, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2023-11-29 03:57:16,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:57:16,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:57:16,117 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:57:16,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:57:16,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:57:16,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:57:16,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:57:16,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:57:16,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (1/1) ... [2023-11-29 03:57:16,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:57:16,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:16,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:57:16,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:57:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:57:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:57:16,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 03:57:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 03:57:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 03:57:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 03:57:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:57:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 03:57:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 03:57:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 03:57:16,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:57:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:57:16,219 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:57:16,365 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:57:16,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:57:16,646 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:57:16,687 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:57:16,688 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 03:57:16,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:57:16 BoogieIcfgContainer [2023-11-29 03:57:16,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:57:16,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:57:16,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:57:16,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:57:16,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:57:15" (1/3) ... [2023-11-29 03:57:16,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1e07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:57:16, skipping insertion in model container [2023-11-29 03:57:16,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:16" (2/3) ... [2023-11-29 03:57:16,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed1e07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:57:16, skipping insertion in model container [2023-11-29 03:57:16,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:57:16" (3/3) ... [2023-11-29 03:57:16,696 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-11-29 03:57:16,702 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:57:16,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:57:16,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-29 03:57:16,710 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:57:16,772 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 03:57:16,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 212 transitions, 431 flow [2023-11-29 03:57:16,893 INFO L124 PetriNetUnfolderBase]: 26/275 cut-off events. [2023-11-29 03:57:16,893 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 03:57:16,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 275 events. 26/275 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1012 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 172. Up to 4 conditions per place. [2023-11-29 03:57:16,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 212 transitions, 431 flow [2023-11-29 03:57:16,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 212 transitions, 431 flow [2023-11-29 03:57:16,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:57:16,923 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;@54bea7f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:57:16,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 03:57:16,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:57:16,934 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2023-11-29 03:57:16,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:57:16,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:16,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:16,936 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)] === [2023-11-29 03:57:16,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:16,940 INFO L85 PathProgramCache]: Analyzing trace with hash 481620851, now seen corresponding path program 1 times [2023-11-29 03:57:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127556405] [2023-11-29 03:57:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127556405] [2023-11-29 03:57:17,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127556405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:17,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:57:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792594955] [2023-11-29 03:57:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:17,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:17,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 212 [2023-11-29 03:57:17,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 212 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2023-11-29 03:57:17,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:17,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 212 [2023-11-29 03:57:17,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:17,541 INFO L124 PetriNetUnfolderBase]: 121/1015 cut-off events. [2023-11-29 03:57:17,541 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:57:17,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1015 events. 121/1015 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6751 event pairs, 0 based on Foata normal form. 142/1067 useless extension candidates. Maximal degree in co-relation 1205. Up to 254 conditions per place. [2023-11-29 03:57:17,551 INFO L140 encePairwiseOnDemand]: 191/212 looper letters, 36 selfloop transitions, 2 changer transitions 0/203 dead transitions. [2023-11-29 03:57:17,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 203 transitions, 489 flow [2023-11-29 03:57:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:17,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-11-29 03:57:17,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8977987421383647 [2023-11-29 03:57:17,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-11-29 03:57:17,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-11-29 03:57:17,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:17,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-11-29 03:57:17,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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) [2023-11-29 03:57:17,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-29 03:57:17,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-29 03:57:17,587 INFO L175 Difference]: Start difference. First operand has 195 places, 212 transitions, 431 flow. Second operand 3 states and 571 transitions. [2023-11-29 03:57:17,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 203 transitions, 489 flow [2023-11-29 03:57:17,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 203 transitions, 489 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:57:17,596 INFO L231 Difference]: Finished difference. Result has 195 places, 191 transitions, 397 flow [2023-11-29 03:57:17,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=195, PETRI_TRANSITIONS=191} [2023-11-29 03:57:17,602 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, 0 predicate places. [2023-11-29 03:57:17,602 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 191 transitions, 397 flow [2023-11-29 03:57:17,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2023-11-29 03:57:17,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:17,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:17,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:57:17,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 03:57:17,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash -935563087, now seen corresponding path program 1 times [2023-11-29 03:57:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:17,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019700666] [2023-11-29 03:57:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019700666] [2023-11-29 03:57:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019700666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:57:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660728349] [2023-11-29 03:57:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:17,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:17,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 212 [2023-11-29 03:57:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 191 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-11-29 03:57:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 212 [2023-11-29 03:57:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:18,009 INFO L124 PetriNetUnfolderBase]: 170/1617 cut-off events. [2023-11-29 03:57:18,009 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 03:57:18,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 1617 events. 170/1617 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12725 event pairs, 48 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 1945. Up to 189 conditions per place. [2023-11-29 03:57:18,018 INFO L140 encePairwiseOnDemand]: 208/212 looper letters, 41 selfloop transitions, 3 changer transitions 0/211 dead transitions. [2023-11-29 03:57:18,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 211 transitions, 528 flow [2023-11-29 03:57:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-11-29 03:57:18,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8679245283018868 [2023-11-29 03:57:18,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-11-29 03:57:18,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-11-29 03:57:18,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:18,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-11-29 03:57:18,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2023-11-29 03:57:18,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-29 03:57:18,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 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) [2023-11-29 03:57:18,027 INFO L175 Difference]: Start difference. First operand has 195 places, 191 transitions, 397 flow. Second operand 3 states and 552 transitions. [2023-11-29 03:57:18,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 211 transitions, 528 flow [2023-11-29 03:57:18,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 211 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:57:18,033 INFO L231 Difference]: Finished difference. Result has 197 places, 193 transitions, 415 flow [2023-11-29 03:57:18,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=197, PETRI_TRANSITIONS=193} [2023-11-29 03:57:18,035 INFO L281 CegarLoopForPetriNet]: 195 programPoint places, 2 predicate places. [2023-11-29 03:57:18,035 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 193 transitions, 415 flow [2023-11-29 03:57:18,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-11-29 03:57:18,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:18,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:18,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:57:18,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 03:57:18,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1374476121, now seen corresponding path program 1 times [2023-11-29 03:57:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:18,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168818228] [2023-11-29 03:57:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:57:18,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:57:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:57:18,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:57:18,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:57:18,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 03:57:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 03:57:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 03:57:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 03:57:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 03:57:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 03:57:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 03:57:18,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 03:57:18,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 03:57:18,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 03:57:18,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 03:57:18,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 03:57:18,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 03:57:18,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 03:57:18,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 03:57:18,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 03:57:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 03:57:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 03:57:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 03:57:18,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 03:57:18,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 03:57:18,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 03:57:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:57:18,117 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 03:57:18,120 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 03:57:18,120 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 03:57:18,170 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:57:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 318 transitions, 652 flow [2023-11-29 03:57:18,260 INFO L124 PetriNetUnfolderBase]: 48/476 cut-off events. [2023-11-29 03:57:18,260 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 03:57:18,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 476 events. 48/476 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2175 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 299. Up to 8 conditions per place. [2023-11-29 03:57:18,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 318 transitions, 652 flow [2023-11-29 03:57:18,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 318 transitions, 652 flow [2023-11-29 03:57:18,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:57:18,273 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;@54bea7f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:57:18,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-29 03:57:18,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:57:18,278 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2023-11-29 03:57:18,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:57:18,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:18,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:18,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:18,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:18,279 INFO L85 PathProgramCache]: Analyzing trace with hash -780183119, now seen corresponding path program 1 times [2023-11-29 03:57:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:18,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221588747] [2023-11-29 03:57:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:18,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:18,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221588747] [2023-11-29 03:57:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221588747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:18,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:18,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:57:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74506837] [2023-11-29 03:57:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 318 [2023-11-29 03:57:18,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 318 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-11-29 03:57:18,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:18,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 318 [2023-11-29 03:57:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:21,046 INFO L124 PetriNetUnfolderBase]: 3598/18477 cut-off events. [2023-11-29 03:57:21,046 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-11-29 03:57:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24028 conditions, 18477 events. 3598/18477 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 235088 event pairs, 3267 based on Foata normal form. 3073/19750 useless extension candidates. Maximal degree in co-relation 20835. Up to 5465 conditions per place. [2023-11-29 03:57:21,189 INFO L140 encePairwiseOnDemand]: 285/318 looper letters, 51 selfloop transitions, 2 changer transitions 0/298 dead transitions. [2023-11-29 03:57:21,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 298 transitions, 718 flow [2023-11-29 03:57:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-11-29 03:57:21,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8784067085953878 [2023-11-29 03:57:21,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-11-29 03:57:21,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-11-29 03:57:21,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:21,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-11-29 03:57:21,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 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) [2023-11-29 03:57:21,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:21,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:21,201 INFO L175 Difference]: Start difference. First operand has 289 places, 318 transitions, 652 flow. Second operand 3 states and 838 transitions. [2023-11-29 03:57:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 298 transitions, 718 flow [2023-11-29 03:57:21,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 298 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:57:21,209 INFO L231 Difference]: Finished difference. Result has 289 places, 286 transitions, 598 flow [2023-11-29 03:57:21,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=289, PETRI_TRANSITIONS=286} [2023-11-29 03:57:21,211 INFO L281 CegarLoopForPetriNet]: 289 programPoint places, 0 predicate places. [2023-11-29 03:57:21,211 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 286 transitions, 598 flow [2023-11-29 03:57:21,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2023-11-29 03:57:21,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:21,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:21,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:57:21,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 322526617, now seen corresponding path program 1 times [2023-11-29 03:57:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:21,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63011625] [2023-11-29 03:57:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63011625] [2023-11-29 03:57:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63011625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:21,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:21,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:57:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802342288] [2023-11-29 03:57:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:21,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:21,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:21,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:21,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 318 [2023-11-29 03:57:21,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 286 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-29 03:57:21,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:21,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 318 [2023-11-29 03:57:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:24,878 INFO L124 PetriNetUnfolderBase]: 6242/30858 cut-off events. [2023-11-29 03:57:24,878 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-11-29 03:57:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40795 conditions, 30858 events. 6242/30858 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 427025 event pairs, 1648 based on Foata normal form. 0/27518 useless extension candidates. Maximal degree in co-relation 40741. Up to 5556 conditions per place. [2023-11-29 03:57:25,063 INFO L140 encePairwiseOnDemand]: 311/318 looper letters, 74 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2023-11-29 03:57:25,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 324 transitions, 843 flow [2023-11-29 03:57:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-11-29 03:57:25,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8584905660377359 [2023-11-29 03:57:25,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-11-29 03:57:25,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-11-29 03:57:25,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:25,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-11-29 03:57:25,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-29 03:57:25,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:25,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:25,075 INFO L175 Difference]: Start difference. First operand has 289 places, 286 transitions, 598 flow. Second operand 3 states and 819 transitions. [2023-11-29 03:57:25,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 324 transitions, 843 flow [2023-11-29 03:57:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 324 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:57:25,084 INFO L231 Difference]: Finished difference. Result has 292 places, 291 transitions, 640 flow [2023-11-29 03:57:25,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=292, PETRI_TRANSITIONS=291} [2023-11-29 03:57:25,086 INFO L281 CegarLoopForPetriNet]: 289 programPoint places, 3 predicate places. [2023-11-29 03:57:25,086 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 291 transitions, 640 flow [2023-11-29 03:57:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2023-11-29 03:57:25,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:25,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:57:25,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 821797551, now seen corresponding path program 1 times [2023-11-29 03:57:25,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:25,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133985737] [2023-11-29 03:57:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:25,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133985737] [2023-11-29 03:57:25,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133985737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:57:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503566045] [2023-11-29 03:57:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:25,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:57:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:25,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:57:25,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:57:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:25,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:57:25,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:57:25,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:57:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503566045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:57:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 03:57:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844482876] [2023-11-29 03:57:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:25,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:57:25,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 318 [2023-11-29 03:57:25,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 291 transitions, 640 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2023-11-29 03:57:25,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:25,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 318 [2023-11-29 03:57:25,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:30,185 INFO L124 PetriNetUnfolderBase]: 9661/42266 cut-off events. [2023-11-29 03:57:30,185 INFO L125 PetriNetUnfolderBase]: For 2174/2178 co-relation queries the response was YES. [2023-11-29 03:57:30,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59408 conditions, 42266 events. 9661/42266 cut-off events. For 2174/2178 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 600176 event pairs, 7051 based on Foata normal form. 0/37219 useless extension candidates. Maximal degree in co-relation 56524. Up to 12810 conditions per place. [2023-11-29 03:57:30,427 INFO L140 encePairwiseOnDemand]: 312/318 looper letters, 68 selfloop transitions, 8 changer transitions 0/321 dead transitions. [2023-11-29 03:57:30,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 321 transitions, 864 flow [2023-11-29 03:57:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-11-29 03:57:30,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8427672955974843 [2023-11-29 03:57:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-11-29 03:57:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-11-29 03:57:30,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-11-29 03:57:30,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-29 03:57:30,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:30,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:30,438 INFO L175 Difference]: Start difference. First operand has 292 places, 291 transitions, 640 flow. Second operand 3 states and 804 transitions. [2023-11-29 03:57:30,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 321 transitions, 864 flow [2023-11-29 03:57:30,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 321 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:57:30,454 INFO L231 Difference]: Finished difference. Result has 294 places, 297 transitions, 696 flow [2023-11-29 03:57:30,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=696, PETRI_PLACES=294, PETRI_TRANSITIONS=297} [2023-11-29 03:57:30,456 INFO L281 CegarLoopForPetriNet]: 289 programPoint places, 5 predicate places. [2023-11-29 03:57:30,456 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 297 transitions, 696 flow [2023-11-29 03:57:30,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2023-11-29 03:57:30,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:30,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:30,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:57:30,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:57:30,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:30,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash 313509438, now seen corresponding path program 1 times [2023-11-29 03:57:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:30,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435829887] [2023-11-29 03:57:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435829887] [2023-11-29 03:57:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435829887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:57:30,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346208922] [2023-11-29 03:57:30,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:30,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:30,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 318 [2023-11-29 03:57:30,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 297 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-29 03:57:30,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:30,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 318 [2023-11-29 03:57:30,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:47,711 INFO L124 PetriNetUnfolderBase]: 41227/148494 cut-off events. [2023-11-29 03:57:47,712 INFO L125 PetriNetUnfolderBase]: For 1557/1644 co-relation queries the response was YES. [2023-11-29 03:57:48,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217404 conditions, 148494 events. 41227/148494 cut-off events. For 1557/1644 co-relation queries the response was YES. Maximal size of possible extension queue 3588. Compared 2361237 event pairs, 16161 based on Foata normal form. 17/133838 useless extension candidates. Maximal degree in co-relation 212648. Up to 35130 conditions per place. [2023-11-29 03:57:48,567 INFO L140 encePairwiseOnDemand]: 283/318 looper letters, 102 selfloop transitions, 26 changer transitions 0/356 dead transitions. [2023-11-29 03:57:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 356 transitions, 1081 flow [2023-11-29 03:57:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-11-29 03:57:48,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8291404612159329 [2023-11-29 03:57:48,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-11-29 03:57:48,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-11-29 03:57:48,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:48,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-11-29 03:57:48,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 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) [2023-11-29 03:57:48,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:48,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 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) [2023-11-29 03:57:48,582 INFO L175 Difference]: Start difference. First operand has 294 places, 297 transitions, 696 flow. Second operand 3 states and 791 transitions. [2023-11-29 03:57:48,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 356 transitions, 1081 flow [2023-11-29 03:57:48,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 356 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:57:48,600 INFO L231 Difference]: Finished difference. Result has 296 places, 323 transitions, 906 flow [2023-11-29 03:57:48,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=906, PETRI_PLACES=296, PETRI_TRANSITIONS=323} [2023-11-29 03:57:48,602 INFO L281 CegarLoopForPetriNet]: 289 programPoint places, 7 predicate places. [2023-11-29 03:57:48,602 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 323 transitions, 906 flow [2023-11-29 03:57:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-29 03:57:48,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:48,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:48,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:57:48,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:48,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 543212614, now seen corresponding path program 1 times [2023-11-29 03:57:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168784445] [2023-11-29 03:57:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:48,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:48,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168784445] [2023-11-29 03:57:48,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168784445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:57:48,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290065990] [2023-11-29 03:57:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:48,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:57:48,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:48,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:57:48,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:57:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:48,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:57:48,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:48,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:57:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290065990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:57:48,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:57:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 03:57:48,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263172824] [2023-11-29 03:57:48,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:57:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:57:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:57:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:57:48,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 318 [2023-11-29 03:57:48,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 323 transitions, 906 flow. Second operand has 10 states, 10 states have (on average 246.3) internal successors, (2463), 10 states have internal predecessors, (2463), 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) [2023-11-29 03:57:48,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:48,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 318 [2023-11-29 03:57:48,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:50,698 INFO L124 PetriNetUnfolderBase]: 2899/12973 cut-off events. [2023-11-29 03:57:50,698 INFO L125 PetriNetUnfolderBase]: For 1885/1984 co-relation queries the response was YES. [2023-11-29 03:57:50,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20426 conditions, 12973 events. 2899/12973 cut-off events. For 1885/1984 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 153495 event pairs, 424 based on Foata normal form. 327/12172 useless extension candidates. Maximal degree in co-relation 9488. Up to 1672 conditions per place. [2023-11-29 03:57:50,765 INFO L140 encePairwiseOnDemand]: 313/318 looper letters, 138 selfloop transitions, 7 changer transitions 0/366 dead transitions. [2023-11-29 03:57:50,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 366 transitions, 1218 flow [2023-11-29 03:57:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:57:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:57:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2343 transitions. [2023-11-29 03:57:50,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8186582809224319 [2023-11-29 03:57:50,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2343 transitions. [2023-11-29 03:57:50,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2343 transitions. [2023-11-29 03:57:50,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:50,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2343 transitions. [2023-11-29 03:57:50,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.3333333333333) internal successors, (2343), 9 states have internal predecessors, (2343), 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) [2023-11-29 03:57:50,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 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) [2023-11-29 03:57:50,784 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 318.0) internal successors, (3180), 10 states have internal predecessors, (3180), 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) [2023-11-29 03:57:50,784 INFO L175 Difference]: Start difference. First operand has 296 places, 323 transitions, 906 flow. Second operand 9 states and 2343 transitions. [2023-11-29 03:57:50,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 366 transitions, 1218 flow [2023-11-29 03:57:50,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 366 transitions, 1162 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 03:57:50,798 INFO L231 Difference]: Finished difference. Result has 244 places, 256 transitions, 666 flow [2023-11-29 03:57:50,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=666, PETRI_PLACES=244, PETRI_TRANSITIONS=256} [2023-11-29 03:57:50,799 INFO L281 CegarLoopForPetriNet]: 289 programPoint places, -45 predicate places. [2023-11-29 03:57:50,800 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 256 transitions, 666 flow [2023-11-29 03:57:50,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.3) internal successors, (2463), 10 states have internal predecessors, (2463), 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) [2023-11-29 03:57:50,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:50,801 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:50,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:57:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5175b9ef-82a1-4fff-9ff2-1f92447678b2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:57:51,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-29 03:57:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1643728518, now seen corresponding path program 1 times [2023-11-29 03:57:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378663537] [2023-11-29 03:57:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:57:51,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:57:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:57:51,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:57:51,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 03:57:51,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-29 03:57:51,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-29 03:57:51,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-29 03:57:51,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-29 03:57:51,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-29 03:57:51,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-29 03:57:51,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-29 03:57:51,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-29 03:57:51,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-29 03:57:51,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-29 03:57:51,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-29 03:57:51,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-29 03:57:51,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-29 03:57:51,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-29 03:57:51,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-29 03:57:51,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-29 03:57:51,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-29 03:57:51,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-29 03:57:51,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-29 03:57:51,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-29 03:57:51,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:57:51,044 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-29 03:57:51,044 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 03:57:51,044 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 03:57:51,092 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:57:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 424 transitions, 875 flow [2023-11-29 03:57:51,201 INFO L124 PetriNetUnfolderBase]: 75/724 cut-off events. [2023-11-29 03:57:51,201 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:57:51,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 724 events. 75/724 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3619 event pairs, 1 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 484. Up to 16 conditions per place. [2023-11-29 03:57:51,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 424 transitions, 875 flow [2023-11-29 03:57:51,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 424 transitions, 875 flow [2023-11-29 03:57:51,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:57:51,218 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;@54bea7f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:57:51,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-29 03:57:51,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:57:51,221 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2023-11-29 03:57:51,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:57:51,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:51,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:51,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-29 03:57:51,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1030932647, now seen corresponding path program 1 times [2023-11-29 03:57:51,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:51,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064450843] [2023-11-29 03:57:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:51,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:51,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064450843] [2023-11-29 03:57:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064450843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:57:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746440973] [2023-11-29 03:57:51,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:51,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 424 [2023-11-29 03:57:51,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 424 transitions, 875 flow. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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) [2023-11-29 03:57:51,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:51,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 424 [2023-11-29 03:57:51,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:58:28,933 INFO L124 PetriNetUnfolderBase]: 72375/274748 cut-off events. [2023-11-29 03:58:28,933 INFO L125 PetriNetUnfolderBase]: For 2899/2899 co-relation queries the response was YES. [2023-11-29 03:58:30,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373300 conditions, 274748 events. 72375/274748 cut-off events. For 2899/2899 co-relation queries the response was YES. Maximal size of possible extension queue 5619. Compared 4709160 event pairs, 67862 based on Foata normal form. 57744/307575 useless extension candidates. Maximal degree in co-relation 317440. Up to 97204 conditions per place. [2023-11-29 03:58:31,371 INFO L140 encePairwiseOnDemand]: 379/424 looper letters, 65 selfloop transitions, 2 changer transitions 0/392 dead transitions. [2023-11-29 03:58:31,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 392 transitions, 945 flow [2023-11-29 03:58:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:58:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:58:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1104 transitions. [2023-11-29 03:58:31,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8679245283018868 [2023-11-29 03:58:31,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1104 transitions. [2023-11-29 03:58:31,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1104 transitions. [2023-11-29 03:58:31,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:58:31,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1104 transitions. [2023-11-29 03:58:31,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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) [2023-11-29 03:58:31,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2023-11-29 03:58:31,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 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) [2023-11-29 03:58:31,381 INFO L175 Difference]: Start difference. First operand has 383 places, 424 transitions, 875 flow. Second operand 3 states and 1104 transitions. [2023-11-29 03:58:31,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 392 transitions, 945 flow [2023-11-29 03:58:31,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 392 transitions, 945 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:58:31,390 INFO L231 Difference]: Finished difference. Result has 383 places, 380 transitions, 797 flow [2023-11-29 03:58:31,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=797, PETRI_PLACES=383, PETRI_TRANSITIONS=380} [2023-11-29 03:58:31,391 INFO L281 CegarLoopForPetriNet]: 383 programPoint places, 0 predicate places. [2023-11-29 03:58:31,392 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 380 transitions, 797 flow [2023-11-29 03:58:31,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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) [2023-11-29 03:58:31,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:58:31,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:31,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:58:31,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-11-29 03:58:31,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1138619391, now seen corresponding path program 1 times [2023-11-29 03:58:31,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:31,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275053301] [2023-11-29 03:58:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:31,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275053301] [2023-11-29 03:58:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275053301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:58:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029759054] [2023-11-29 03:58:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:58:31,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:58:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:31,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 424 [2023-11-29 03:58:31,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 380 transitions, 797 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-11-29 03:58:31,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:58:31,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 424 [2023-11-29 03:58:31,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand