./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:34,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:35,145 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:00:35,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:35,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:35,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:35,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:35,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:35,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:35,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:35,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:35,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:35,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:35,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:35,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:35,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:35,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:35,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:35,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:35,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:35,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:35,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:35,224 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:00:35,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:35,226 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:35,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:35,227 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:35,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:35,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:35,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:35,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:35,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:35,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:35,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:35,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:35,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:35,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:35,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:35,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:35,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:35,235 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:35,236 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_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2796c466e7d8363340777400f1e90c0fc7eb53096f49ded0fb8aa6814bf1ef21 [2023-11-19 08:00:35,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:35,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:35,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:35,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:35,659 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:35,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2023-11-19 08:00:38,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:39,335 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:39,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/sv-benchmarks/c/pthread-nondet/nondet-array-2.i [2023-11-19 08:00:39,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/data/26e735b6f/cff00e3f6e67404bad569e934a3fad9b/FLAG52fd26a06 [2023-11-19 08:00:39,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/data/26e735b6f/cff00e3f6e67404bad569e934a3fad9b [2023-11-19 08:00:39,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:39,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:39,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:39,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:39,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:39,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fc8f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:39, skipping insertion in model container [2023-11-19 08:00:39,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:39" (1/1) ... [2023-11-19 08:00:39,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:39,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:39,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:40,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:40,103 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:40,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40 WrapperNode [2023-11-19 08:00:40,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:40,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:40,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:40,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,171 INFO L138 Inliner]: procedures = 170, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2023-11-19 08:00:40,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:40,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:40,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:40,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:40,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:40,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:40,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:40,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (1/1) ... [2023-11-19 08:00:40,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:40,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:40,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 08:00:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 08:00:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 08:00:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:40,337 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:00:40,544 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:40,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:40,838 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:40,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:40,851 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 08:00:40,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:40 BoogieIcfgContainer [2023-11-19 08:00:40,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:40,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:40,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:40,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:40,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:39" (1/3) ... [2023-11-19 08:00:40,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5b69ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:40, skipping insertion in model container [2023-11-19 08:00:40,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:40" (2/3) ... [2023-11-19 08:00:40,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5b69ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:40, skipping insertion in model container [2023-11-19 08:00:40,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:40" (3/3) ... [2023-11-19 08:00:40,869 INFO L112 eAbstractionObserver]: Analyzing ICFG nondet-array-2.i [2023-11-19 08:00:40,882 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:00:40,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:40,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-19 08:00:40,894 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:41,024 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:00:41,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,166 INFO L124 PetriNetUnfolderBase]: 14/173 cut-off events. [2023-11-19 08:00:41,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 14/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-19 08:00:41,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:41,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,201 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 243 flow [2023-11-19 08:00:41,259 INFO L124 PetriNetUnfolderBase]: 14/173 cut-off events. [2023-11-19 08:00:41,259 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:41,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 14/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-11-19 08:00:41,265 INFO L119 LiptonReduction]: Number of co-enabled transitions 2562 [2023-11-19 08:00:44,513 INFO L134 LiptonReduction]: Checked pairs total: 6660 [2023-11-19 08:00:44,513 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-19 08:00:44,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:44,537 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;@c3e9594, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:44,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 08:00:44,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:44,542 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-19 08:00:44,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:44,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:44,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:00:44,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:00:44,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:44,549 INFO L85 PathProgramCache]: Analyzing trace with hash 13246404, now seen corresponding path program 1 times [2023-11-19 08:00:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:44,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54527438] [2023-11-19 08:00:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:44,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54527438] [2023-11-19 08:00:44,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54527438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:44,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584528278] [2023-11-19 08:00:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:44,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:44,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 220 [2023-11-19 08:00:44,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 73 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 220 [2023-11-19 08:00:44,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:44,989 INFO L124 PetriNetUnfolderBase]: 27/134 cut-off events. [2023-11-19 08:00:44,989 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:00:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 134 events. 27/134 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 652 event pairs, 21 based on Foata normal form. 8/123 useless extension candidates. Maximal degree in co-relation 166. Up to 68 conditions per place. [2023-11-19 08:00:44,995 INFO L140 encePairwiseOnDemand]: 218/220 looper letters, 15 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-11-19 08:00:44,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 99 flow [2023-11-19 08:00:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:00:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 235 transitions. [2023-11-19 08:00:45,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-11-19 08:00:45,018 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 235 transitions. [2023-11-19 08:00:45,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 235 transitions. [2023-11-19 08:00:45,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:45,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 235 transitions. [2023-11-19 08:00:45,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,039 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,041 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 73 flow. Second operand 2 states and 235 transitions. [2023-11-19 08:00:45,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 99 flow [2023-11-19 08:00:45,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:45,048 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 69 flow [2023-11-19 08:00:45,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-19 08:00:45,057 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-19 08:00:45,057 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 69 flow [2023-11-19 08:00:45,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:45,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:45,058 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:00:45,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:45,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-19 08:00:45,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:45,061 INFO L85 PathProgramCache]: Analyzing trace with hash -155068597, now seen corresponding path program 1 times [2023-11-19 08:00:45,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:45,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291621454] [2023-11-19 08:00:45,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:45,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:45,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:45,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 08:00:45,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 08:00:45,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 08:00:45,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 08:00:45,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 08:00:45,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 08:00:45,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 08:00:45,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 08:00:45,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 08:00:45,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:45,263 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:00:45,267 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:45,267 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:00:45,307 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:00:45,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,400 INFO L124 PetriNetUnfolderBase]: 27/314 cut-off events. [2023-11-19 08:00:45,400 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 08:00:45,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 27/314 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1028 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-19 08:00:45,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:45,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,408 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 141 transitions, 298 flow [2023-11-19 08:00:45,464 INFO L124 PetriNetUnfolderBase]: 27/314 cut-off events. [2023-11-19 08:00:45,464 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-19 08:00:45,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 27/314 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1028 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-19 08:00:45,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 6468 [2023-11-19 08:00:48,636 INFO L134 LiptonReduction]: Checked pairs total: 32574 [2023-11-19 08:00:48,636 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-19 08:00:48,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:48,653 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;@c3e9594, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:48,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 08:00:48,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:48,658 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 08:00:48,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:48,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:48,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:48,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:00:48,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash 665434576, now seen corresponding path program 1 times [2023-11-19 08:00:48,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:48,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519389395] [2023-11-19 08:00:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:48,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519389395] [2023-11-19 08:00:48,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519389395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:48,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:48,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:48,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613260489] [2023-11-19 08:00:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:48,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:48,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 244 [2023-11-19 08:00:48,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:48,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:48,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 244 [2023-11-19 08:00:48,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:49,219 INFO L124 PetriNetUnfolderBase]: 1239/2956 cut-off events. [2023-11-19 08:00:49,219 INFO L125 PetriNetUnfolderBase]: For 81/85 co-relation queries the response was YES. [2023-11-19 08:00:49,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5059 conditions, 2956 events. 1239/2956 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 20919 event pairs, 420 based on Foata normal form. 0/2516 useless extension candidates. Maximal degree in co-relation 3458. Up to 1173 conditions per place. [2023-11-19 08:00:49,245 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 48 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-19 08:00:49,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 301 flow [2023-11-19 08:00:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-11-19 08:00:49,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765027322404371 [2023-11-19 08:00:49,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-11-19 08:00:49,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-11-19 08:00:49,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-11-19 08:00:49,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,258 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 132 flow. Second operand 3 states and 422 transitions. [2023-11-19 08:00:49,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 301 flow [2023-11-19 08:00:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:49,262 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 184 flow [2023-11-19 08:00:49,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-11-19 08:00:49,263 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2023-11-19 08:00:49,264 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 184 flow [2023-11-19 08:00:49,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:49,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:49,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:00:49,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1707805578, now seen corresponding path program 1 times [2023-11-19 08:00:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934236210] [2023-11-19 08:00:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934236210] [2023-11-19 08:00:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934236210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:49,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:49,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920893469] [2023-11-19 08:00:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:49,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:49,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:49,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 244 [2023-11-19 08:00:49,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:49,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 244 [2023-11-19 08:00:49,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:49,861 INFO L124 PetriNetUnfolderBase]: 898/2431 cut-off events. [2023-11-19 08:00:49,862 INFO L125 PetriNetUnfolderBase]: For 474/484 co-relation queries the response was YES. [2023-11-19 08:00:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4537 conditions, 2431 events. 898/2431 cut-off events. For 474/484 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 18114 event pairs, 678 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 2403. Up to 1451 conditions per place. [2023-11-19 08:00:49,887 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 32 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-19 08:00:49,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 274 flow [2023-11-19 08:00:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-19 08:00:49,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2023-11-19 08:00:49,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-19 08:00:49,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-19 08:00:49,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:49,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-19 08:00:49,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,896 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 184 flow. Second operand 3 states and 392 transitions. [2023-11-19 08:00:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 274 flow [2023-11-19 08:00:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:49,904 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 184 flow [2023-11-19 08:00:49,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-19 08:00:49,905 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-11-19 08:00:49,905 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 184 flow [2023-11-19 08:00:49,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:49,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:49,906 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:00:49,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:49,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-19 08:00:49,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:49,907 INFO L85 PathProgramCache]: Analyzing trace with hash -99794114, now seen corresponding path program 1 times [2023-11-19 08:00:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:49,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793764095] [2023-11-19 08:00:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:49,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:49,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:49,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:49,956 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:49,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-11-19 08:00:49,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-11-19 08:00:49,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-11-19 08:00:49,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-11-19 08:00:49,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-11-19 08:00:49,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-11-19 08:00:49,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-11-19 08:00:49,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-11-19 08:00:49,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-11-19 08:00:49,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-11-19 08:00:49,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-11-19 08:00:49,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-11-19 08:00:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:49,966 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 08:00:49,967 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:49,967 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:00:49,996 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:00:49,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,078 INFO L124 PetriNetUnfolderBase]: 53/564 cut-off events. [2023-11-19 08:00:50,078 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-19 08:00:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 564 events. 53/564 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2236 event pairs, 1 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-11-19 08:00:50,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:50,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 164 transitions, 355 flow [2023-11-19 08:00:50,165 INFO L124 PetriNetUnfolderBase]: 53/564 cut-off events. [2023-11-19 08:00:50,166 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-19 08:00:50,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 564 events. 53/564 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2236 event pairs, 1 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 322. Up to 16 conditions per place. [2023-11-19 08:00:50,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 11214 [2023-11-19 08:00:52,639 INFO L134 LiptonReduction]: Checked pairs total: 55208 [2023-11-19 08:00:52,639 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-19 08:00:52,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:52,642 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;@c3e9594, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:52,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 08:00:52,660 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:52,660 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 08:00:52,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:52,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:52,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:52,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:52,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 940453213, now seen corresponding path program 1 times [2023-11-19 08:00:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:52,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453462823] [2023-11-19 08:00:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453462823] [2023-11-19 08:00:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453462823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54684340] [2023-11-19 08:00:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:52,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 265 [2023-11-19 08:00:52,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:52,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:52,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 265 [2023-11-19 08:00:52,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:57,524 INFO L124 PetriNetUnfolderBase]: 19347/37426 cut-off events. [2023-11-19 08:00:57,524 INFO L125 PetriNetUnfolderBase]: For 1530/1608 co-relation queries the response was YES. [2023-11-19 08:00:57,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66132 conditions, 37426 events. 19347/37426 cut-off events. For 1530/1608 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 357936 event pairs, 7149 based on Foata normal form. 0/32216 useless extension candidates. Maximal degree in co-relation 33199. Up to 15316 conditions per place. [2023-11-19 08:00:57,823 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 62 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2023-11-19 08:00:57,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 406 flow [2023-11-19 08:00:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-11-19 08:00:57,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176100628930817 [2023-11-19 08:00:57,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-11-19 08:00:57,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-11-19 08:00:57,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:57,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-11-19 08:00:57,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 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) [2023-11-19 08:00:57,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 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) [2023-11-19 08:00:57,832 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 177 flow. Second operand 3 states and 491 transitions. [2023-11-19 08:00:57,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 406 flow [2023-11-19 08:00:57,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:57,839 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 255 flow [2023-11-19 08:00:57,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-19 08:00:57,843 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2023-11-19 08:00:57,843 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 255 flow [2023-11-19 08:00:57,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:57,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:57,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:57,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:57,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:57,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:57,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1801411579, now seen corresponding path program 1 times [2023-11-19 08:00:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:57,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714087304] [2023-11-19 08:00:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714087304] [2023-11-19 08:00:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714087304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711851734] [2023-11-19 08:00:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:58,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 265 [2023-11-19 08:00:58,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:58,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:58,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 265 [2023-11-19 08:00:58,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:01,044 INFO L124 PetriNetUnfolderBase]: 14231/30002 cut-off events. [2023-11-19 08:01:01,045 INFO L125 PetriNetUnfolderBase]: For 9303/9531 co-relation queries the response was YES. [2023-11-19 08:01:01,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59919 conditions, 30002 events. 14231/30002 cut-off events. For 9303/9531 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 301214 event pairs, 10382 based on Foata normal form. 0/25741 useless extension candidates. Maximal degree in co-relation 15126. Up to 19870 conditions per place. [2023-11-19 08:01:01,424 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 41 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-19 08:01:01,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 363 flow [2023-11-19 08:01:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:01:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:01:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-11-19 08:01:01,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811320754716981 [2023-11-19 08:01:01,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-11-19 08:01:01,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-11-19 08:01:01,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:01,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-11-19 08:01:01,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:01,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 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) [2023-11-19 08:01:01,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 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) [2023-11-19 08:01:01,434 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 255 flow. Second operand 3 states and 462 transitions. [2023-11-19 08:01:01,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 363 flow [2023-11-19 08:01:01,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:01:01,524 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 249 flow [2023-11-19 08:01:01,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-19 08:01:01,526 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-11-19 08:01:01,526 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 249 flow [2023-11-19 08:01:01,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:01,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:01,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:01:01,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:01:01,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash 972875562, now seen corresponding path program 1 times [2023-11-19 08:01:01,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684779514] [2023-11-19 08:01:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:01,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684779514] [2023-11-19 08:01:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684779514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:01:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298454115] [2023-11-19 08:01:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:01,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:01:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:01,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:01:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298454115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:01:02,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:01:02,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-19 08:01:02,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288490229] [2023-11-19 08:01:02,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:01:02,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:02,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:01:02,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:01:02,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 265 [2023-11-19 08:01:02,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 249 flow. Second operand has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 265 [2023-11-19 08:01:02,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:03,067 INFO L124 PetriNetUnfolderBase]: 3682/7519 cut-off events. [2023-11-19 08:01:03,067 INFO L125 PetriNetUnfolderBase]: For 3314/3314 co-relation queries the response was YES. [2023-11-19 08:01:03,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15565 conditions, 7519 events. 3682/7519 cut-off events. For 3314/3314 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 63598 event pairs, 514 based on Foata normal form. 612/7601 useless extension candidates. Maximal degree in co-relation 12856. Up to 3623 conditions per place. [2023-11-19 08:01:03,115 INFO L140 encePairwiseOnDemand]: 262/265 looper letters, 66 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-11-19 08:01:03,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 462 flow [2023-11-19 08:01:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 869 transitions. [2023-11-19 08:01:03,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465408805031446 [2023-11-19 08:01:03,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 869 transitions. [2023-11-19 08:01:03,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 869 transitions. [2023-11-19 08:01:03,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:03,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 869 transitions. [2023-11-19 08:01:03,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,132 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 249 flow. Second operand 6 states and 869 transitions. [2023-11-19 08:01:03,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 462 flow [2023-11-19 08:01:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:01:03,138 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 202 flow [2023-11-19 08:01:03,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-11-19 08:01:03,139 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2023-11-19 08:01:03,139 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 202 flow [2023-11-19 08:01:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:03,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:03,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69134e59-9139-4ca7-b79d-c858250c6bea/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:01:03,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:01:03,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1372078584, now seen corresponding path program 1 times [2023-11-19 08:01:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413639847] [2023-11-19 08:01:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413639847] [2023-11-19 08:01:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413639847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:01:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819761268] [2023-11-19 08:01:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:01:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:01:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:01:03,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 265 [2023-11-19 08:01:03,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 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) [2023-11-19 08:01:03,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:03,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 265 [2023-11-19 08:01:03,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:01:08,671 INFO L124 PetriNetUnfolderBase]: 26501/43273 cut-off events. [2023-11-19 08:01:08,671 INFO L125 PetriNetUnfolderBase]: For 16668/16669 co-relation queries the response was YES. [2023-11-19 08:01:08,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95893 conditions, 43273 events. 26501/43273 cut-off events. For 16668/16669 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 355527 event pairs, 11159 based on Foata normal form. 0/41142 useless extension candidates. Maximal degree in co-relation 74439. Up to 20612 conditions per place. [2023-11-19 08:01:08,895 INFO L140 encePairwiseOnDemand]: 250/265 looper letters, 126 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2023-11-19 08:01:08,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 181 transitions, 888 flow [2023-11-19 08:01:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:01:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:01:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2023-11-19 08:01:08,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547169811320755 [2023-11-19 08:01:08,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 882 transitions. [2023-11-19 08:01:08,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 882 transitions. [2023-11-19 08:01:08,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:08,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 882 transitions. [2023-11-19 08:01:08,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:08,911 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 202 flow. Second operand 6 states and 882 transitions. [2023-11-19 08:01:08,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 181 transitions, 888 flow [2023-11-19 08:01:08,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 181 transitions, 855 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 08:01:08,926 INFO L231 Difference]: Finished difference. Result has 75 places, 97 transitions, 409 flow [2023-11-19 08:01:08,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2023-11-19 08:01:08,927 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-19 08:01:08,928 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 97 transitions, 409 flow [2023-11-19 08:01:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 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) [2023-11-19 08:01:08,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 08:01:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:01:08,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:01:08,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1642743155, now seen corresponding path program 1 times [2023-11-19 08:01:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982015493] [2023-11-19 08:01:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:08,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:08,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:08,967 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:01:08,968 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 08:01:08,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-19 08:01:08,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-19 08:01:08,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-19 08:01:08,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-19 08:01:08,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-19 08:01:08,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-19 08:01:08,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-19 08:01:08,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-19 08:01:08,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-19 08:01:08,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-19 08:01:08,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-19 08:01:08,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-19 08:01:08,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-19 08:01:08,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-19 08:01:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:01:08,971 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 08:01:08,972 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:01:08,972 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 08:01:09,005 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:01:09,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,149 INFO L124 PetriNetUnfolderBase]: 107/1034 cut-off events. [2023-11-19 08:01:09,149 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-19 08:01:09,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1034 events. 107/1034 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4945 event pairs, 6 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 584. Up to 32 conditions per place. [2023-11-19 08:01:09,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:09,160 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 414 flow [2023-11-19 08:01:09,409 INFO L124 PetriNetUnfolderBase]: 107/1034 cut-off events. [2023-11-19 08:01:09,410 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-19 08:01:09,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1034 events. 107/1034 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4945 event pairs, 6 based on Foata normal form. 0/883 useless extension candidates. Maximal degree in co-relation 584. Up to 32 conditions per place. [2023-11-19 08:01:09,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 16968 [2023-11-19 08:01:11,826 INFO L134 LiptonReduction]: Checked pairs total: 90651 [2023-11-19 08:01:11,826 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-11-19 08:01:11,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:01:11,829 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;@c3e9594, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:01:11,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 08:01:11,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:01:11,832 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-11-19 08:01:11,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:11,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:01:11,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:01:11,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-19 08:01:11,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1246714529, now seen corresponding path program 1 times [2023-11-19 08:01:11,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:11,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427705255] [2023-11-19 08:01:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:11,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:11,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427705255] [2023-11-19 08:01:11,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427705255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:11,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:01:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144419549] [2023-11-19 08:01:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:11,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:01:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:01:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:01:11,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 298 [2023-11-19 08:01:11,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:11,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:01:11,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 298 [2023-11-19 08:01:11,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand