./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 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_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/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_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/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_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/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 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:06,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:06,209 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:45:06,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:06,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:06,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:06,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:06,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:06,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:06,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:06,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:06,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:06,247 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:06,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:06,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:06,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:06,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:06,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:06,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:06,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:06,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:06,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:06,255 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:45:06,255 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:06,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:06,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:06,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:06,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:06,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:06,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:06,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:06,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:06,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:06,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:06,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:06,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:06,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:06,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:06,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:06,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:06,265 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:06,266 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_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2023-11-19 07:45:06,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:06,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:06,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:06,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:06,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:06,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-19 07:45:09,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:10,273 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:10,273 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2023-11-19 07:45:10,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/data/081075ad1/3aa0636877464b6fadda72742ec65fe4/FLAG2706333f2 [2023-11-19 07:45:10,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/data/081075ad1/3aa0636877464b6fadda72742ec65fe4 [2023-11-19 07:45:10,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:10,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:10,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:10,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:10,317 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:10,318 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:10" (1/1) ... [2023-11-19 07:45:10,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523d28a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:10, skipping insertion in model container [2023-11-19 07:45:10,319 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:10" (1/1) ... [2023-11-19 07:45:10,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:10,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:10,924 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:10,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:11,061 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:11,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11 WrapperNode [2023-11-19 07:45:11,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:11,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:11,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:11,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:11,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,160 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 274 [2023-11-19 07:45:11,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:11,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:11,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:11,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:11,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:11,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:11,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:11,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:11,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (1/1) ... [2023-11-19 07:45:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:11,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:11,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac2368b6-1b4b-4b62-916d-cd480cbca1d5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:45:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:45:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:45:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:45:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:11,313 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:45:11,462 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:11,465 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:11,949 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:11,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:11,964 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-11-19 07:45:11,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:11 BoogieIcfgContainer [2023-11-19 07:45:11,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:11,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:11,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:11,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:11,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:10" (1/3) ... [2023-11-19 07:45:11,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647b0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:11, skipping insertion in model container [2023-11-19 07:45:11,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:11" (2/3) ... [2023-11-19 07:45:11,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647b0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:11, skipping insertion in model container [2023-11-19 07:45:11,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:11" (3/3) ... [2023-11-19 07:45:11,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-11-19 07:45:11,998 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:45:12,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:12,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:45:12,013 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:12,138 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:45:12,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 289 transitions, 585 flow [2023-11-19 07:45:12,414 INFO L124 PetriNetUnfolderBase]: 46/408 cut-off events. [2023-11-19 07:45:12,414 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:12,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 408 events. 46/408 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1699 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2023-11-19 07:45:12,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 289 transitions, 585 flow [2023-11-19 07:45:12,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 287 transitions, 581 flow [2023-11-19 07:45:12,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:12,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 287 transitions, 581 flow [2023-11-19 07:45:12,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 287 transitions, 581 flow [2023-11-19 07:45:12,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 287 transitions, 581 flow [2023-11-19 07:45:12,595 INFO L124 PetriNetUnfolderBase]: 45/406 cut-off events. [2023-11-19 07:45:12,595 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:12,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 406 events. 45/406 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1720 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2023-11-19 07:45:12,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 24250 [2023-11-19 07:45:20,365 INFO L134 LiptonReduction]: Checked pairs total: 111372 [2023-11-19 07:45:20,365 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-11-19 07:45:20,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:20,389 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;@5cdab3bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:20,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:45:20,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:20,396 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-11-19 07:45:20,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:20,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:20,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:45:20,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-19 07:45:20,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 285579061, now seen corresponding path program 1 times [2023-11-19 07:45:20,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014447950] [2023-11-19 07:45:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:20,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:20,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:20,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:20,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:45:20,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 07:45:20,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 07:45:20,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 07:45:20,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 07:45:20,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 07:45:20,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 07:45:20,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 07:45:20,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 07:45:20,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 07:45:20,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 07:45:20,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 07:45:20,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 07:45:20,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 07:45:20,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 07:45:20,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 07:45:20,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 07:45:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:20,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 07:45:20,683 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:45:20,683 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:45:20,770 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:45:20,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 388 transitions, 792 flow [2023-11-19 07:45:20,963 INFO L124 PetriNetUnfolderBase]: 77/658 cut-off events. [2023-11-19 07:45:20,964 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:45:20,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 658 events. 77/658 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3359 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 410. Up to 12 conditions per place. [2023-11-19 07:45:20,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 388 transitions, 792 flow [2023-11-19 07:45:20,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 386 transitions, 788 flow [2023-11-19 07:45:20,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:20,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 386 transitions, 788 flow [2023-11-19 07:45:20,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 386 transitions, 788 flow [2023-11-19 07:45:20,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 386 transitions, 788 flow [2023-11-19 07:45:21,122 INFO L124 PetriNetUnfolderBase]: 76/656 cut-off events. [2023-11-19 07:45:21,123 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:45:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 656 events. 76/656 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3372 event pairs, 0 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 408. Up to 12 conditions per place. [2023-11-19 07:45:21,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 69452 [2023-11-19 07:45:29,534 INFO L134 LiptonReduction]: Checked pairs total: 352140 [2023-11-19 07:45:29,534 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-11-19 07:45:29,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:29,538 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;@5cdab3bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:29,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:45:29,548 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:29,548 INFO L124 PetriNetUnfolderBase]: 17/90 cut-off events. [2023-11-19 07:45:29,549 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:45:29,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:29,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:29,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:45:29,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -787870027, now seen corresponding path program 1 times [2023-11-19 07:45:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:29,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78745063] [2023-11-19 07:45:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:29,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78745063] [2023-11-19 07:45:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78745063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:29,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301735619] [2023-11-19 07:45:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:29,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 635 [2023-11-19 07:45:29,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 192 transitions, 400 flow. Second operand has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 635 [2023-11-19 07:45:29,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:34,897 INFO L124 PetriNetUnfolderBase]: 14723/34627 cut-off events. [2023-11-19 07:45:34,897 INFO L125 PetriNetUnfolderBase]: For 172/250 co-relation queries the response was YES. [2023-11-19 07:45:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55981 conditions, 34627 events. 14723/34627 cut-off events. For 172/250 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 373443 event pairs, 13600 based on Foata normal form. 5770/37132 useless extension candidates. Maximal degree in co-relation 26692. Up to 21257 conditions per place. [2023-11-19 07:45:35,323 INFO L140 encePairwiseOnDemand]: 603/635 looper letters, 61 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2023-11-19 07:45:35,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 160 transitions, 458 flow [2023-11-19 07:45:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 779 transitions. [2023-11-19 07:45:35,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133858267716535 [2023-11-19 07:45:35,348 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 779 transitions. [2023-11-19 07:45:35,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 779 transitions. [2023-11-19 07:45:35,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:35,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 779 transitions. [2023-11-19 07:45:35,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 389.5) internal successors, (779), 2 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 635.0) internal successors, (1905), 3 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,384 INFO L175 Difference]: Start difference. First operand has 160 places, 192 transitions, 400 flow. Second operand 2 states and 779 transitions. [2023-11-19 07:45:35,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 160 transitions, 458 flow [2023-11-19 07:45:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:35,401 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 336 flow [2023-11-19 07:45:35,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=336, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2023-11-19 07:45:35,410 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2023-11-19 07:45:35,416 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 336 flow [2023-11-19 07:45:35,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:35,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:35,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:35,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:35,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:45:35,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 555213769, now seen corresponding path program 1 times [2023-11-19 07:45:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745961977] [2023-11-19 07:45:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:35,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:35,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745961977] [2023-11-19 07:45:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745961977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:35,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:35,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186985447] [2023-11-19 07:45:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:35,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:36,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 635 [2023-11-19 07:45:36,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 296.5) internal successors, (1779), 6 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:36,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 635 [2023-11-19 07:45:36,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:50,376 INFO L124 PetriNetUnfolderBase]: 74124/131734 cut-off events. [2023-11-19 07:45:50,376 INFO L125 PetriNetUnfolderBase]: For 406/425 co-relation queries the response was YES. [2023-11-19 07:45:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242800 conditions, 131734 events. 74124/131734 cut-off events. For 406/425 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 1303107 event pairs, 37379 based on Foata normal form. 6/122641 useless extension candidates. Maximal degree in co-relation 242795. Up to 81105 conditions per place. [2023-11-19 07:45:51,566 INFO L140 encePairwiseOnDemand]: 598/635 looper letters, 226 selfloop transitions, 82 changer transitions 0/371 dead transitions. [2023-11-19 07:45:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 371 transitions, 1380 flow [2023-11-19 07:45:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2081 transitions. [2023-11-19 07:45:51,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461942257217848 [2023-11-19 07:45:51,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2081 transitions. [2023-11-19 07:45:51,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2081 transitions. [2023-11-19 07:45:51,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:51,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2081 transitions. [2023-11-19 07:45:51,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 346.8333333333333) internal successors, (2081), 6 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:51,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:51,611 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 635.0) internal successors, (4445), 7 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:51,612 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 336 flow. Second operand 6 states and 2081 transitions. [2023-11-19 07:45:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 371 transitions, 1380 flow [2023-11-19 07:45:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 371 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:51,637 INFO L231 Difference]: Finished difference. Result has 171 places, 239 transitions, 890 flow [2023-11-19 07:45:51,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=635, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=171, PETRI_TRANSITIONS=239} [2023-11-19 07:45:51,639 INFO L281 CegarLoopForPetriNet]: 160 programPoint places, 11 predicate places. [2023-11-19 07:45:51,639 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 239 transitions, 890 flow [2023-11-19 07:45:51,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.5) internal successors, (1779), 6 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:51,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:51,641 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:45:51,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:51,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:45:51,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2138912622, now seen corresponding path program 1 times [2023-11-19 07:45:51,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822816622] [2023-11-19 07:45:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:51,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:45:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:45:51,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:45:51,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:45:51,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:45:51,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:45:51,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:45:51,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:45:51,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:45:51,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:45:51,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:45:51,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:45:51,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:45:51,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:45:51,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:45:51,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:45:51,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:45:51,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:45:51,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:45:51,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:45:51,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:45:51,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:45:51,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:45:51,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:45:51,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:45:51,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:45:51,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:51,742 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:45:51,743 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:45:51,743 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:45:51,824 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:45:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 487 transitions, 1001 flow [2023-11-19 07:45:52,119 INFO L124 PetriNetUnfolderBase]: 113/955 cut-off events. [2023-11-19 07:45:52,120 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:45:52,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 955 events. 113/955 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5340 event pairs, 1 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 666. Up to 16 conditions per place. [2023-11-19 07:45:52,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 487 transitions, 1001 flow [2023-11-19 07:45:52,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 485 transitions, 997 flow [2023-11-19 07:45:52,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:52,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 485 transitions, 997 flow [2023-11-19 07:45:52,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 485 transitions, 997 flow [2023-11-19 07:45:52,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 485 transitions, 997 flow [2023-11-19 07:45:52,463 INFO L124 PetriNetUnfolderBase]: 112/953 cut-off events. [2023-11-19 07:45:52,464 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:45:52,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 953 events. 112/953 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5377 event pairs, 1 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 664. Up to 16 conditions per place. [2023-11-19 07:45:52,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 133278