./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/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_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/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_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:44:29,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:44:30,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 01:44:30,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:44:30,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:44:30,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:44:30,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:44:30,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:44:30,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:44:30,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:44:30,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:44:30,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:44:30,075 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:44:30,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:44:30,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:44:30,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:44:30,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:44:30,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:44:30,078 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:44:30,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:44:30,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:44:30,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:44:30,080 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 01:44:30,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:44:30,081 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:44:30,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:44:30,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:44:30,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:44:30,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:44:30,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:44:30,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:44:30,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:44:30,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:44:30,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:44:30,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:44:30,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:44:30,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:44:30,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:44:30,086 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:44:30,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:44:30,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:44:30,087 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_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2023-11-29 01:44:30,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:44:30,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:44:30,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:44:30,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:44:30,352 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:44:30,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-29 01:44:33,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:44:33,334 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:44:33,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-29 01:44:33,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/data/34f45ddbb/45322d1bde1d497caaacdee16f0f571c/FLAG06e4a802d [2023-11-29 01:44:33,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/data/34f45ddbb/45322d1bde1d497caaacdee16f0f571c [2023-11-29 01:44:33,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:44:33,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:44:33,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:44:33,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:44:33,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:44:33,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:44:33" (1/1) ... [2023-11-29 01:44:33,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303990c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:33, skipping insertion in model container [2023-11-29 01:44:33,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:44:33" (1/1) ... [2023-11-29 01:44:33,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:44:33,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:44:33,926 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:44:33,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:44:34,038 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:44:34,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34 WrapperNode [2023-11-29 01:44:34,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:44:34,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:44:34,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:44:34,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:44:34,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,104 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 285 [2023-11-29 01:44:34,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:44:34,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:44:34,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:44:34,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:44:34,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:44:34,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:44:34,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:44:34,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:44:34,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (1/1) ... [2023-11-29 01:44:34,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:44:34,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:34,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:44:34,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 01:44:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 01:44:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:44:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 01:44:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 01:44:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 01:44:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:44:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:44:34,236 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 01:44:34,395 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:44:34,397 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:44:34,793 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:44:34,829 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:44:34,829 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-29 01:44:34,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:44:34 BoogieIcfgContainer [2023-11-29 01:44:34,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:44:34,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:44:34,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:44:34,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:44:34,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:44:33" (1/3) ... [2023-11-29 01:44:34,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6c4759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:44:34, skipping insertion in model container [2023-11-29 01:44:34,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:34" (2/3) ... [2023-11-29 01:44:34,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6c4759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:44:34, skipping insertion in model container [2023-11-29 01:44:34,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:44:34" (3/3) ... [2023-11-29 01:44:34,838 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-11-29 01:44:34,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:44:34,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:44:34,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-29 01:44:34,852 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:44:34,925 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 01:44:34,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 290 transitions, 587 flow [2023-11-29 01:44:35,107 INFO L124 PetriNetUnfolderBase]: 48/413 cut-off events. [2023-11-29 01:44:35,107 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:44:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 413 events. 48/413 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1763 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-29 01:44:35,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 290 transitions, 587 flow [2023-11-29 01:44:35,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 290 transitions, 587 flow [2023-11-29 01:44:35,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:44:35,142 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;@35a75481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:44:35,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 01:44:35,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:44:35,159 INFO L124 PetriNetUnfolderBase]: 12/123 cut-off events. [2023-11-29 01:44:35,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:44:35,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:35,160 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 01:44:35,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:44:35,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2042058286, now seen corresponding path program 1 times [2023-11-29 01:44:35,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960156417] [2023-11-29 01:44:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:35,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960156417] [2023-11-29 01:44:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960156417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:35,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859121842] [2023-11-29 01:44:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:35,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 290 [2023-11-29 01:44:35,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 290 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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 01:44:35,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:35,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 290 [2023-11-29 01:44:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:35,799 INFO L124 PetriNetUnfolderBase]: 85/1237 cut-off events. [2023-11-29 01:44:35,799 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 01:44:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1237 events. 85/1237 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8302 event pairs, 72 based on Foata normal form. 209/1336 useless extension candidates. Maximal degree in co-relation 1242. Up to 178 conditions per place. [2023-11-29 01:44:35,811 INFO L140 encePairwiseOnDemand]: 258/290 looper letters, 23 selfloop transitions, 2 changer transitions 1/256 dead transitions. [2023-11-29 01:44:35,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 569 flow [2023-11-29 01:44:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:44:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-29 01:44:35,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8747126436781609 [2023-11-29 01:44:35,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-29 01:44:35,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-29 01:44:35,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:35,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-29 01:44:35,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 01:44:35,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 01:44:35,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 01:44:35,852 INFO L175 Difference]: Start difference. First operand has 260 places, 290 transitions, 587 flow. Second operand 3 states and 761 transitions. [2023-11-29 01:44:35,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 569 flow [2023-11-29 01:44:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 256 transitions, 569 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:44:35,866 INFO L231 Difference]: Finished difference. Result has 257 places, 255 transitions, 527 flow [2023-11-29 01:44:35,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=257, PETRI_TRANSITIONS=255} [2023-11-29 01:44:35,872 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, -3 predicate places. [2023-11-29 01:44:35,872 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 255 transitions, 527 flow [2023-11-29 01:44:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 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 01:44:35,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:35,873 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, 1, 1, 1, 1, 1] [2023-11-29 01:44:35,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:44:35,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:44:35,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1433501784, now seen corresponding path program 1 times [2023-11-29 01:44:35,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:35,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153611086] [2023-11-29 01:44:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:36,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:36,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153611086] [2023-11-29 01:44:36,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153611086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:36,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035029798] [2023-11-29 01:44:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:36,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:36,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:36,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:44:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:36,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:44:36,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:36,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035029798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:36,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:36,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:44:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828198221] [2023-11-29 01:44:36,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:36,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:44:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:44:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:44:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-29 01:44:36,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 255 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 233.9) internal successors, (2339), 10 states have internal predecessors, (2339), 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 01:44:36,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:36,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-29 01:44:36,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:36,640 INFO L124 PetriNetUnfolderBase]: 85/1243 cut-off events. [2023-11-29 01:44:36,641 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 01:44:36,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 1243 events. 85/1243 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8307 event pairs, 72 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 1410. Up to 178 conditions per place. [2023-11-29 01:44:36,650 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 27 selfloop transitions, 9 changer transitions 0/263 dead transitions. [2023-11-29 01:44:36,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 617 flow [2023-11-29 01:44:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:44:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:44:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2126 transitions. [2023-11-29 01:44:36,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8145593869731801 [2023-11-29 01:44:36,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2126 transitions. [2023-11-29 01:44:36,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2126 transitions. [2023-11-29 01:44:36,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:36,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2126 transitions. [2023-11-29 01:44:36,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.22222222222223) internal successors, (2126), 9 states have internal predecessors, (2126), 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 01:44:36,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 290.0) internal successors, (2900), 10 states have internal predecessors, (2900), 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 01:44:36,675 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 290.0) internal successors, (2900), 10 states have internal predecessors, (2900), 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 01:44:36,676 INFO L175 Difference]: Start difference. First operand has 257 places, 255 transitions, 527 flow. Second operand 9 states and 2126 transitions. [2023-11-29 01:44:36,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 617 flow [2023-11-29 01:44:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 263 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:44:36,683 INFO L231 Difference]: Finished difference. Result has 266 places, 261 transitions, 575 flow [2023-11-29 01:44:36,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=575, PETRI_PLACES=266, PETRI_TRANSITIONS=261} [2023-11-29 01:44:36,685 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 6 predicate places. [2023-11-29 01:44:36,685 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 261 transitions, 575 flow [2023-11-29 01:44:36,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 233.9) internal successors, (2339), 10 states have internal predecessors, (2339), 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 01:44:36,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:36,687 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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 01:44:36,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:44:36,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:36,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:44:36,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1623187944, now seen corresponding path program 2 times [2023-11-29 01:44:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132271515] [2023-11-29 01:44:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132271515] [2023-11-29 01:44:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132271515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815581951] [2023-11-29 01:44:37,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:44:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:37,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:37,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:44:37,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:44:37,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:44:37,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:44:37,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:37,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815581951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:37,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 01:44:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115569889] [2023-11-29 01:44:37,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:37,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:44:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:44:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:44:37,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-29 01:44:37,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 261 transitions, 575 flow. Second operand has 18 states, 18 states have (on average 233.94444444444446) internal successors, (4211), 18 states have internal predecessors, (4211), 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 01:44:37,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:37,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-29 01:44:37,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:37,888 INFO L124 PetriNetUnfolderBase]: 85/1263 cut-off events. [2023-11-29 01:44:37,888 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-29 01:44:37,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1263 events. 85/1263 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8363 event pairs, 72 based on Foata normal form. 4/1158 useless extension candidates. Maximal degree in co-relation 1388. Up to 178 conditions per place. [2023-11-29 01:44:37,899 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 31 selfloop transitions, 21 changer transitions 0/279 dead transitions. [2023-11-29 01:44:37,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 279 transitions, 775 flow [2023-11-29 01:44:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:44:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:44:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4928 transitions. [2023-11-29 01:44:37,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8091954022988506 [2023-11-29 01:44:37,914 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4928 transitions. [2023-11-29 01:44:37,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4928 transitions. [2023-11-29 01:44:37,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:37,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4928 transitions. [2023-11-29 01:44:37,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 234.66666666666666) internal successors, (4928), 21 states have internal predecessors, (4928), 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 01:44:37,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 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 01:44:37,948 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 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 01:44:37,948 INFO L175 Difference]: Start difference. First operand has 266 places, 261 transitions, 575 flow. Second operand 21 states and 4928 transitions. [2023-11-29 01:44:37,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 279 transitions, 775 flow [2023-11-29 01:44:37,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 761 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:44:37,957 INFO L231 Difference]: Finished difference. Result has 290 places, 274 transitions, 699 flow [2023-11-29 01:44:37,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=699, PETRI_PLACES=290, PETRI_TRANSITIONS=274} [2023-11-29 01:44:37,959 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 30 predicate places. [2023-11-29 01:44:37,959 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 274 transitions, 699 flow [2023-11-29 01:44:37,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 233.94444444444446) internal successors, (4211), 18 states have internal predecessors, (4211), 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 01:44:37,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:37,961 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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 01:44:37,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:44:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:38,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:44:38,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash -80398744, now seen corresponding path program 3 times [2023-11-29 01:44:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:38,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287495027] [2023-11-29 01:44:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287495027] [2023-11-29 01:44:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287495027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645704587] [2023-11-29 01:44:38,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:44:38,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:38,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:38,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:38,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:44:38,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:44:38,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:44:38,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:44:38,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:38,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:44:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645704587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:38,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 01:44:38,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396009147] [2023-11-29 01:44:38,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:44:38,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:44:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:44:38,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-29 01:44:38,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 274 transitions, 699 flow. Second operand has 23 states, 23 states have (on average 234.04347826086956) internal successors, (5383), 23 states have internal predecessors, (5383), 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 01:44:38,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:38,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-29 01:44:38,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:39,575 INFO L124 PetriNetUnfolderBase]: 85/1278 cut-off events. [2023-11-29 01:44:39,575 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-29 01:44:39,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 1278 events. 85/1278 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8294 event pairs, 72 based on Foata normal form. 3/1172 useless extension candidates. Maximal degree in co-relation 1392. Up to 178 conditions per place. [2023-11-29 01:44:39,587 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 34 selfloop transitions, 30 changer transitions 0/291 dead transitions. [2023-11-29 01:44:39,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 291 transitions, 955 flow [2023-11-29 01:44:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:44:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:44:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7027 transitions. [2023-11-29 01:44:39,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8077011494252874 [2023-11-29 01:44:39,608 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7027 transitions. [2023-11-29 01:44:39,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7027 transitions. [2023-11-29 01:44:39,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:39,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7027 transitions. [2023-11-29 01:44:39,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.23333333333332) internal successors, (7027), 30 states have internal predecessors, (7027), 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 01:44:39,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 290.0) internal successors, (8990), 31 states have internal predecessors, (8990), 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 01:44:39,658 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 290.0) internal successors, (8990), 31 states have internal predecessors, (8990), 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 01:44:39,658 INFO L175 Difference]: Start difference. First operand has 290 places, 274 transitions, 699 flow. Second operand 30 states and 7027 transitions. [2023-11-29 01:44:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 291 transitions, 955 flow [2023-11-29 01:44:39,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 291 transitions, 925 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 01:44:39,669 INFO L231 Difference]: Finished difference. Result has 317 places, 284 transitions, 827 flow [2023-11-29 01:44:39,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=827, PETRI_PLACES=317, PETRI_TRANSITIONS=284} [2023-11-29 01:44:39,670 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 57 predicate places. [2023-11-29 01:44:39,670 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 284 transitions, 827 flow [2023-11-29 01:44:39,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 234.04347826086956) internal successors, (5383), 23 states have internal predecessors, (5383), 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 01:44:39,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:39,673 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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 01:44:39,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:44:39,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:39,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-29 01:44:39,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash -417212782, now seen corresponding path program 4 times [2023-11-29 01:44:39,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:39,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421108783] [2023-11-29 01:44:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:39,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:44:39,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:44:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:44:39,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:44:39,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:44:39,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 01:44:39,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-29 01:44:39,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-29 01:44:39,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-29 01:44:39,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-29 01:44:39,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-29 01:44:39,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-29 01:44:39,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-29 01:44:39,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-29 01:44:39,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-29 01:44:39,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-29 01:44:39,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-29 01:44:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:44:39,965 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-29 01:44:39,968 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:44:39,968 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 01:44:40,049 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:44:40,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 406 transitions, 828 flow [2023-11-29 01:44:40,192 INFO L124 PetriNetUnfolderBase]: 80/684 cut-off events. [2023-11-29 01:44:40,192 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:44:40,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 684 events. 80/684 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3572 event pairs, 0 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 415. Up to 12 conditions per place. [2023-11-29 01:44:40,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 406 transitions, 828 flow [2023-11-29 01:44:40,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 406 transitions, 828 flow [2023-11-29 01:44:40,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:44:40,219 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;@35a75481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:44:40,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 01:44:40,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:44:40,233 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-29 01:44:40,233 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:44:40,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:40,233 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] [2023-11-29 01:44:40,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:40,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1896306959, now seen corresponding path program 1 times [2023-11-29 01:44:40,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:40,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863784176] [2023-11-29 01:44:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:40,275 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 01:44:40,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:40,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863784176] [2023-11-29 01:44:40,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863784176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:40,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:40,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679340200] [2023-11-29 01:44:40,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:40,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:40,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 406 [2023-11-29 01:44:40,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 406 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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 01:44:40,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:40,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 406 [2023-11-29 01:44:40,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:42,292 INFO L124 PetriNetUnfolderBase]: 1577/11962 cut-off events. [2023-11-29 01:44:42,292 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-29 01:44:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14423 conditions, 11962 events. 1577/11962 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 145211 event pairs, 1464 based on Foata normal form. 2910/13847 useless extension candidates. Maximal degree in co-relation 1621. Up to 2408 conditions per place. [2023-11-29 01:44:42,374 INFO L140 encePairwiseOnDemand]: 361/406 looper letters, 33 selfloop transitions, 2 changer transitions 1/356 dead transitions. [2023-11-29 01:44:42,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 356 transitions, 798 flow [2023-11-29 01:44:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:44:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-11-29 01:44:42,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8702791461412152 [2023-11-29 01:44:42,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-11-29 01:44:42,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-11-29 01:44:42,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:42,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-11-29 01:44:42,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 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 01:44:42,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 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 01:44:42,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 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 01:44:42,385 INFO L175 Difference]: Start difference. First operand has 363 places, 406 transitions, 828 flow. Second operand 3 states and 1060 transitions. [2023-11-29 01:44:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 356 transitions, 798 flow [2023-11-29 01:44:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 356 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:44:42,394 INFO L231 Difference]: Finished difference. Result has 357 places, 355 transitions, 736 flow [2023-11-29 01:44:42,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=357, PETRI_TRANSITIONS=355} [2023-11-29 01:44:42,396 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, -6 predicate places. [2023-11-29 01:44:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 355 transitions, 736 flow [2023-11-29 01:44:42,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 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 01:44:42,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:42,397 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] [2023-11-29 01:44:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:44:42,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:42,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1784823725, now seen corresponding path program 1 times [2023-11-29 01:44:42,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:42,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764099669] [2023-11-29 01:44:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:42,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:42,466 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 01:44:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:42,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764099669] [2023-11-29 01:44:42,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764099669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:42,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814463929] [2023-11-29 01:44:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:42,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:42,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:42,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:42,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:44:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:42,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:44:42,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:42,582 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 01:44:42,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:44:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814463929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:42,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:44:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:44:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646176178] [2023-11-29 01:44:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:44:42,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 406 [2023-11-29 01:44:42,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 355 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 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 01:44:42,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:42,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 406 [2023-11-29 01:44:42,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:44,401 INFO L124 PetriNetUnfolderBase]: 2031/13043 cut-off events. [2023-11-29 01:44:44,401 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-29 01:44:44,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16225 conditions, 13043 events. 2031/13043 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 160744 event pairs, 880 based on Foata normal form. 1/11887 useless extension candidates. Maximal degree in co-relation 16192. Up to 3113 conditions per place. [2023-11-29 01:44:44,471 INFO L140 encePairwiseOnDemand]: 403/406 looper letters, 41 selfloop transitions, 2 changer transitions 0/364 dead transitions. [2023-11-29 01:44:44,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 364 transitions, 840 flow [2023-11-29 01:44:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:44:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2023-11-29 01:44:44,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8415435139573071 [2023-11-29 01:44:44,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2023-11-29 01:44:44,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2023-11-29 01:44:44,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:44,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2023-11-29 01:44:44,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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 01:44:44,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 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 01:44:44,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 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 01:44:44,479 INFO L175 Difference]: Start difference. First operand has 357 places, 355 transitions, 736 flow. Second operand 3 states and 1025 transitions. [2023-11-29 01:44:44,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 364 transitions, 840 flow [2023-11-29 01:44:44,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 364 transitions, 838 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:44:44,489 INFO L231 Difference]: Finished difference. Result has 358 places, 356 transitions, 746 flow [2023-11-29 01:44:44,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=358, PETRI_TRANSITIONS=356} [2023-11-29 01:44:44,490 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, -5 predicate places. [2023-11-29 01:44:44,490 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 356 transitions, 746 flow [2023-11-29 01:44:44,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 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 01:44:44,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:44,491 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, 1, 1, 1, 1, 1] [2023-11-29 01:44:44,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:44:44,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:44:44,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -892199690, now seen corresponding path program 1 times [2023-11-29 01:44:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003967899] [2023-11-29 01:44:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003967899] [2023-11-29 01:44:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003967899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372654995] [2023-11-29 01:44:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:44,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:44,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:44,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:44,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:44:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:44,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:44:44,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:44,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372654995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:44,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:44:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122100716] [2023-11-29 01:44:44,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:44:44,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:44,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:44:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:44:44,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-29 01:44:44,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 356 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 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 01:44:44,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:44,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-29 01:44:44,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:46,744 INFO L124 PetriNetUnfolderBase]: 1575/11882 cut-off events. [2023-11-29 01:44:46,744 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-29 01:44:46,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 11882 events. 1575/11882 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144717 event pairs, 1464 based on Foata normal form. 2/10878 useless extension candidates. Maximal degree in co-relation 14312. Up to 2400 conditions per place. [2023-11-29 01:44:46,815 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 37 selfloop transitions, 9 changer transitions 0/364 dead transitions. [2023-11-29 01:44:46,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 364 transitions, 856 flow [2023-11-29 01:44:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:44:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:44:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2964 transitions. [2023-11-29 01:44:46,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111658456486043 [2023-11-29 01:44:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2964 transitions. [2023-11-29 01:44:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2964 transitions. [2023-11-29 01:44:46,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:46,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2964 transitions. [2023-11-29 01:44:46,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 329.3333333333333) internal successors, (2964), 9 states have internal predecessors, (2964), 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 01:44:46,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 406.0) internal successors, (4060), 10 states have internal predecessors, (4060), 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 01:44:46,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 406.0) internal successors, (4060), 10 states have internal predecessors, (4060), 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 01:44:46,837 INFO L175 Difference]: Start difference. First operand has 358 places, 356 transitions, 746 flow. Second operand 9 states and 2964 transitions. [2023-11-29 01:44:46,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 364 transitions, 856 flow [2023-11-29 01:44:46,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 364 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:44:46,844 INFO L231 Difference]: Finished difference. Result has 368 places, 362 transitions, 794 flow [2023-11-29 01:44:46,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=368, PETRI_TRANSITIONS=362} [2023-11-29 01:44:46,845 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 5 predicate places. [2023-11-29 01:44:46,845 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 362 transitions, 794 flow [2023-11-29 01:44:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 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 01:44:46,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:46,846 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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 01:44:46,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:44:47,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:47,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:47,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1030281590, now seen corresponding path program 2 times [2023-11-29 01:44:47,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:47,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143157315] [2023-11-29 01:44:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143157315] [2023-11-29 01:44:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143157315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998334789] [2023-11-29 01:44:47,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:44:47,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:47,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:47,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:47,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:44:47,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:44:47,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:44:47,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:44:47,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:47,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998334789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:47,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:47,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 01:44:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824636330] [2023-11-29 01:44:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:44:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:44:47,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:44:47,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-29 01:44:47,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 362 transitions, 794 flow. Second operand has 18 states, 18 states have (on average 326.0) internal successors, (5868), 18 states have internal predecessors, (5868), 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 01:44:47,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:47,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-29 01:44:47,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:49,429 INFO L124 PetriNetUnfolderBase]: 1575/11902 cut-off events. [2023-11-29 01:44:49,429 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-29 01:44:49,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14461 conditions, 11902 events. 1575/11902 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144696 event pairs, 1464 based on Foata normal form. 4/10900 useless extension candidates. Maximal degree in co-relation 14316. Up to 2400 conditions per place. [2023-11-29 01:44:49,498 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 41 selfloop transitions, 21 changer transitions 0/380 dead transitions. [2023-11-29 01:44:49,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 380 transitions, 1014 flow [2023-11-29 01:44:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:44:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 01:44:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6870 transitions. [2023-11-29 01:44:49,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8057705840957072 [2023-11-29 01:44:49,520 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6870 transitions. [2023-11-29 01:44:49,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6870 transitions. [2023-11-29 01:44:49,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:49,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6870 transitions. [2023-11-29 01:44:49,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 327.14285714285717) internal successors, (6870), 21 states have internal predecessors, (6870), 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 01:44:49,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 406.0) internal successors, (8932), 22 states have internal predecessors, (8932), 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 01:44:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 406.0) internal successors, (8932), 22 states have internal predecessors, (8932), 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 01:44:49,564 INFO L175 Difference]: Start difference. First operand has 368 places, 362 transitions, 794 flow. Second operand 21 states and 6870 transitions. [2023-11-29 01:44:49,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 380 transitions, 1014 flow [2023-11-29 01:44:49,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 380 transitions, 1000 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 01:44:49,576 INFO L231 Difference]: Finished difference. Result has 392 places, 375 transitions, 918 flow [2023-11-29 01:44:49,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=918, PETRI_PLACES=392, PETRI_TRANSITIONS=375} [2023-11-29 01:44:49,577 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 29 predicate places. [2023-11-29 01:44:49,577 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 375 transitions, 918 flow [2023-11-29 01:44:49,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 326.0) internal successors, (5868), 18 states have internal predecessors, (5868), 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 01:44:49,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:49,579 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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 01:44:49,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:44:49,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:44:49,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:49,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1048146550, now seen corresponding path program 3 times [2023-11-29 01:44:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:49,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599394712] [2023-11-29 01:44:49,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:49,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599394712] [2023-11-29 01:44:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599394712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107054647] [2023-11-29 01:44:50,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:44:50,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:50,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:50,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:44:50,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 01:44:50,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:44:50,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:44:50,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:50,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:44:50,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107054647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:44:50,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:44:50,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 01:44:50,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216413196] [2023-11-29 01:44:50,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:50,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:44:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:44:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:44:50,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-29 01:44:50,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 375 transitions, 918 flow. Second operand has 23 states, 23 states have (on average 326.0869565217391) internal successors, (7500), 23 states have internal predecessors, (7500), 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 01:44:50,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:50,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-29 01:44:50,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:44:52,949 INFO L124 PetriNetUnfolderBase]: 1575/11917 cut-off events. [2023-11-29 01:44:52,950 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-29 01:44:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14559 conditions, 11917 events. 1575/11917 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144737 event pairs, 1464 based on Foata normal form. 3/10914 useless extension candidates. Maximal degree in co-relation 14320. Up to 2400 conditions per place. [2023-11-29 01:44:53,023 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 44 selfloop transitions, 30 changer transitions 0/392 dead transitions. [2023-11-29 01:44:53,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 392 transitions, 1194 flow [2023-11-29 01:44:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:44:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 01:44:53,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9797 transitions. [2023-11-29 01:44:53,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.804351395730706 [2023-11-29 01:44:53,038 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9797 transitions. [2023-11-29 01:44:53,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9797 transitions. [2023-11-29 01:44:53,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:44:53,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9797 transitions. [2023-11-29 01:44:53,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 326.56666666666666) internal successors, (9797), 30 states have internal predecessors, (9797), 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 01:44:53,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 406.0) internal successors, (12586), 31 states have internal predecessors, (12586), 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 01:44:53,074 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 406.0) internal successors, (12586), 31 states have internal predecessors, (12586), 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 01:44:53,074 INFO L175 Difference]: Start difference. First operand has 392 places, 375 transitions, 918 flow. Second operand 30 states and 9797 transitions. [2023-11-29 01:44:53,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 392 transitions, 1194 flow [2023-11-29 01:44:53,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 392 transitions, 1164 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 01:44:53,085 INFO L231 Difference]: Finished difference. Result has 419 places, 385 transitions, 1046 flow [2023-11-29 01:44:53,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=419, PETRI_TRANSITIONS=385} [2023-11-29 01:44:53,086 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 56 predicate places. [2023-11-29 01:44:53,086 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 385 transitions, 1046 flow [2023-11-29 01:44:53,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 326.0869565217391) internal successors, (7500), 23 states have internal predecessors, (7500), 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 01:44:53,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:53,088 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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 01:44:53,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:44:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:44:53,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 01:44:53,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 627312522, now seen corresponding path program 4 times [2023-11-29 01:44:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456075046] [2023-11-29 01:44:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:44:53,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:44:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:44:53,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:44:53,348 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:44:53,348 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 01:44:53,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 01:44:53,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 01:44:53,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 01:44:53,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 01:44:53,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 01:44:53,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 01:44:53,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 01:44:53,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 01:44:53,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 01:44:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:44:53,352 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-29 01:44:53,353 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 01:44:53,353 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 01:44:53,413 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:44:53,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 522 transitions, 1071 flow [2023-11-29 01:44:53,651 INFO L124 PetriNetUnfolderBase]: 117/1002 cut-off events. [2023-11-29 01:44:53,651 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 01:44:53,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 1002 events. 117/1002 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5811 event pairs, 1 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 692. Up to 16 conditions per place. [2023-11-29 01:44:53,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 522 transitions, 1071 flow [2023-11-29 01:44:53,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 522 transitions, 1071 flow [2023-11-29 01:44:53,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:44:53,678 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;@35a75481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:44:53,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-29 01:44:53,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:44:53,684 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-29 01:44:53,684 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:44:53,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:44:53,685 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] [2023-11-29 01:44:53,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:44:53,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1761294095, now seen corresponding path program 1 times [2023-11-29 01:44:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066443565] [2023-11-29 01:44:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:53,712 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 01:44:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066443565] [2023-11-29 01:44:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066443565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535609959] [2023-11-29 01:44:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:53,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:53,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 522 [2023-11-29 01:44:53,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 522 transitions, 1071 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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 01:44:53,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:44:53,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 522 [2023-11-29 01:44:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:45:14,125 INFO L124 PetriNetUnfolderBase]: 22024/117396 cut-off events. [2023-11-29 01:45:14,125 INFO L125 PetriNetUnfolderBase]: For 1657/1657 co-relation queries the response was YES. [2023-11-29 01:45:14,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147731 conditions, 117396 events. 22024/117396 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 1953065 event pairs, 21001 based on Foata normal form. 36059/144015 useless extension candidates. Maximal degree in co-relation 14410. Up to 29677 conditions per place. [2023-11-29 01:45:15,461 INFO L140 encePairwiseOnDemand]: 464/522 looper letters, 43 selfloop transitions, 2 changer transitions 1/456 dead transitions. [2023-11-29 01:45:15,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 456 transitions, 1029 flow [2023-11-29 01:45:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:45:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1359 transitions. [2023-11-29 01:45:15,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.867816091954023 [2023-11-29 01:45:15,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1359 transitions. [2023-11-29 01:45:15,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1359 transitions. [2023-11-29 01:45:15,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:45:15,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1359 transitions. [2023-11-29 01:45:15,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 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 01:45:15,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 01:45:15,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 01:45:15,468 INFO L175 Difference]: Start difference. First operand has 466 places, 522 transitions, 1071 flow. Second operand 3 states and 1359 transitions. [2023-11-29 01:45:15,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 456 transitions, 1029 flow [2023-11-29 01:45:15,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 456 transitions, 1029 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:45:15,477 INFO L231 Difference]: Finished difference. Result has 457 places, 455 transitions, 947 flow [2023-11-29 01:45:15,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=947, PETRI_PLACES=457, PETRI_TRANSITIONS=455} [2023-11-29 01:45:15,478 INFO L281 CegarLoopForPetriNet]: 466 programPoint places, -9 predicate places. [2023-11-29 01:45:15,478 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 455 transitions, 947 flow [2023-11-29 01:45:15,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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 01:45:15,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:45:15,479 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] [2023-11-29 01:45:15,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:45:15,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:45:15,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1612025491, now seen corresponding path program 1 times [2023-11-29 01:45:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211616674] [2023-11-29 01:45:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:15,549 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 01:45:15,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:15,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211616674] [2023-11-29 01:45:15,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211616674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:45:15,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492837288] [2023-11-29 01:45:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:15,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:15,551 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:15,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:45:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:15,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:45:15,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:15,684 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 01:45:15,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:45:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492837288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:15,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:45:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:45:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315238814] [2023-11-29 01:45:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:45:15,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 522 [2023-11-29 01:45:15,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 455 transitions, 947 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 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 01:45:15,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:45:15,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 522 [2023-11-29 01:45:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:45:37,716 INFO L124 PetriNetUnfolderBase]: 28311/130106 cut-off events. [2023-11-29 01:45:37,716 INFO L125 PetriNetUnfolderBase]: For 3602/3602 co-relation queries the response was YES. [2023-11-29 01:45:38,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169181 conditions, 130106 events. 28311/130106 cut-off events. For 3602/3602 co-relation queries the response was YES. Maximal size of possible extension queue 2751. Compared 2147608 event pairs, 27281 based on Foata normal form. 1/119316 useless extension candidates. Maximal degree in co-relation 169147. Up to 38401 conditions per place. [2023-11-29 01:45:39,296 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 51 selfloop transitions, 2 changer transitions 0/464 dead transitions. [2023-11-29 01:45:39,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 464 transitions, 1071 flow [2023-11-29 01:45:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:45:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2023-11-29 01:45:39,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8371647509578544 [2023-11-29 01:45:39,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2023-11-29 01:45:39,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2023-11-29 01:45:39,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:45:39,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2023-11-29 01:45:39,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.0) internal successors, (1311), 3 states have internal predecessors, (1311), 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 01:45:39,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 01:45:39,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 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 01:45:39,303 INFO L175 Difference]: Start difference. First operand has 457 places, 455 transitions, 947 flow. Second operand 3 states and 1311 transitions. [2023-11-29 01:45:39,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 464 transitions, 1071 flow [2023-11-29 01:45:39,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 464 transitions, 1069 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:45:39,317 INFO L231 Difference]: Finished difference. Result has 458 places, 456 transitions, 957 flow [2023-11-29 01:45:39,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=957, PETRI_PLACES=458, PETRI_TRANSITIONS=456} [2023-11-29 01:45:39,318 INFO L281 CegarLoopForPetriNet]: 466 programPoint places, -8 predicate places. [2023-11-29 01:45:39,319 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 456 transitions, 957 flow [2023-11-29 01:45:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 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 01:45:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:45:39,319 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:39,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:45:39,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:45:39,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:45:39,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash -843174200, now seen corresponding path program 1 times [2023-11-29 01:45:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40588668] [2023-11-29 01:45:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:39,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:45:39,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:39,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40588668] [2023-11-29 01:45:39,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40588668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:45:39,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369269919] [2023-11-29 01:45:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:39,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:39,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:39,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:39,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:45:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:39,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:45:39,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:45:39,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:45:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:45:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369269919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:45:39,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:45:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:45:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82352657] [2023-11-29 01:45:39,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:45:39,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:45:39,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:45:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:39,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 522 [2023-11-29 01:45:39,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 456 transitions, 957 flow. Second operand has 10 states, 10 states have (on average 418.1) internal successors, (4181), 10 states have internal predecessors, (4181), 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 01:45:39,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:45:39,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 522 [2023-11-29 01:45:39,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:45:59,836 INFO L124 PetriNetUnfolderBase]: 22022/117316 cut-off events. [2023-11-29 01:45:59,837 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-11-29 01:46:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147846 conditions, 117316 events. 22022/117316 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 1952449 event pairs, 21001 based on Foata normal form. 2/107978 useless extension candidates. Maximal degree in co-relation 147781. Up to 29669 conditions per place. [2023-11-29 01:46:01,236 INFO L140 encePairwiseOnDemand]: 516/522 looper letters, 47 selfloop transitions, 9 changer transitions 0/464 dead transitions. [2023-11-29 01:46:01,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 464 transitions, 1087 flow [2023-11-29 01:46:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:46:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:46:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3802 transitions. [2023-11-29 01:46:01,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8092805449127288 [2023-11-29 01:46:01,241 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3802 transitions. [2023-11-29 01:46:01,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3802 transitions. [2023-11-29 01:46:01,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:01,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3802 transitions. [2023-11-29 01:46:01,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 422.44444444444446) internal successors, (3802), 9 states have internal predecessors, (3802), 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 01:46:01,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 522.0) internal successors, (5220), 10 states have internal predecessors, (5220), 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 01:46:01,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 522.0) internal successors, (5220), 10 states have internal predecessors, (5220), 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 01:46:01,252 INFO L175 Difference]: Start difference. First operand has 458 places, 456 transitions, 957 flow. Second operand 9 states and 3802 transitions. [2023-11-29 01:46:01,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 464 transitions, 1087 flow [2023-11-29 01:46:01,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 464 transitions, 1085 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:01,262 INFO L231 Difference]: Finished difference. Result has 468 places, 462 transitions, 1005 flow [2023-11-29 01:46:01,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1005, PETRI_PLACES=468, PETRI_TRANSITIONS=462} [2023-11-29 01:46:01,264 INFO L281 CegarLoopForPetriNet]: 466 programPoint places, 2 predicate places. [2023-11-29 01:46:01,264 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 462 transitions, 1005 flow [2023-11-29 01:46:01,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 418.1) internal successors, (4181), 10 states have internal predecessors, (4181), 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 01:46:01,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:01,265 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 01:46:01,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:46:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:01,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 01:46:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2113591160, now seen corresponding path program 2 times [2023-11-29 01:46:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404933729] [2023-11-29 01:46:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:46:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404933729] [2023-11-29 01:46:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404933729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:01,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374455559] [2023-11-29 01:46:01,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:46:01,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:01,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:01,551 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:01,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5edf4f-8b83-4721-acd1-bc80010cfd9c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:46:01,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:46:01,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:46:01,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:46:01,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:01,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 01:46:01,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-29 01:46:01,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:46:01,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-29 01:46:01,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:46:01,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-29 01:46:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:46:01,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:01,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374455559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:01,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:46:01,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-29 01:46:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386773754] [2023-11-29 01:46:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:46:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:46:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:46:02,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 522 [2023-11-29 01:46:02,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 462 transitions, 1005 flow. Second operand has 6 states, 6 states have (on average 370.8333333333333) internal successors, (2225), 6 states have internal predecessors, (2225), 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 01:46:02,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:02,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 522 [2023-11-29 01:46:02,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand