./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:51:39,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:51:39,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:51:39,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:51:39,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:51:39,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:51:39,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:51:39,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:51:39,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:51:39,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:51:39,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:51:39,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:51:39,486 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:51:39,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:51:39,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:51:39,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:51:39,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:51:39,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:51:39,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:51:39,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:51:39,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:51:39,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:51:39,495 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:51:39,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:51:39,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:51:39,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:51:39,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:51:39,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:51:39,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:51:39,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:51:39,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:51:39,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:51:39,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:51:39,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:51:39,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:51:39,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:51:39,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:51:39,526 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:51:39,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:51:39,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:51:39,527 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:51:39,528 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_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2023-11-06 22:51:39,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:51:39,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:51:39,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:51:39,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:51:39,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:51:39,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-06 22:51:43,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:51:43,894 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:51:43,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-06 22:51:43,932 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/data/b5e295de8/f1b4c8423a624c2fa07bf783f57d7ef3/FLAG68aa4977b [2023-11-06 22:51:43,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/data/b5e295de8/f1b4c8423a624c2fa07bf783f57d7ef3 [2023-11-06 22:51:43,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:51:43,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:51:43,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:51:43,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:51:43,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:51:43,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:43" (1/1) ... [2023-11-06 22:51:43,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fa4840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:43, skipping insertion in model container [2023-11-06 22:51:43,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:43" (1/1) ... [2023-11-06 22:51:44,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:51:44,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:51:44,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:51:44,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:51:44,933 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:51:44,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44 WrapperNode [2023-11-06 22:51:44,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:51:44,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:51:44,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:51:44,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:51:44,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:44,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,021 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 353 [2023-11-06 22:51:45,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:51:45,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:51:45,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:51:45,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:51:45,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:51:45,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:51:45,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:51:45,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:51:45,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (1/1) ... [2023-11-06 22:51:45,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:51:45,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:45,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:51:45,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:51:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:51:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:51:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:51:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:51:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:51:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:51:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:51:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:51:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:51:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:51:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:51:45,239 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:51:45,416 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:51:45,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:51:46,096 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:51:46,125 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:51:46,125 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-06 22:51:46,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:46 BoogieIcfgContainer [2023-11-06 22:51:46,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:51:46,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:51:46,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:51:46,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:51:46,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:43" (1/3) ... [2023-11-06 22:51:46,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69574673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:46, skipping insertion in model container [2023-11-06 22:51:46,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:44" (2/3) ... [2023-11-06 22:51:46,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69574673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:46, skipping insertion in model container [2023-11-06 22:51:46,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:46" (3/3) ... [2023-11-06 22:51:46,140 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-11-06 22:51:46,151 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:51:46,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:51:46,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:51:46,164 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:51:46,387 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:51:46,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,730 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-06 22:51:46,731 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:51:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-06 22:51:46,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,775 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:46,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,800 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-06 22:51:46,983 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-06 22:51:46,983 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:51:46,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-06 22:51:47,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 50820 [2023-11-06 22:51:52,660 INFO L134 LiptonReduction]: Checked pairs total: 189412 [2023-11-06 22:51:52,660 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-06 22:51:52,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:52,701 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=LoopsAndPotentialCycles, 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;@76a1e9e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:52,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:51:52,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:52,709 INFO L124 PetriNetUnfolderBase]: 10/38 cut-off events. [2023-11-06 22:51:52,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:52,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:52,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:51:52,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:51:52,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 982467427, now seen corresponding path program 1 times [2023-11-06 22:51:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642875009] [2023-11-06 22:51:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642875009] [2023-11-06 22:51:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642875009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752202711] [2023-11-06 22:51:53,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:53,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 614 [2023-11-06 22:51:53,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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) [2023-11-06 22:51:53,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:53,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 614 [2023-11-06 22:51:53,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:54,045 INFO L124 PetriNetUnfolderBase]: 822/2954 cut-off events. [2023-11-06 22:51:54,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:51:54,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2954 events. 822/2954 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23989 event pairs, 684 based on Foata normal form. 357/3023 useless extension candidates. Maximal degree in co-relation 4323. Up to 1527 conditions per place. [2023-11-06 22:51:54,072 INFO L140 encePairwiseOnDemand]: 578/614 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-11-06 22:51:54,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 461 flow [2023-11-06 22:51:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1074 transitions. [2023-11-06 22:51:54,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830618892508144 [2023-11-06 22:51:54,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1074 transitions. [2023-11-06 22:51:54,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1074 transitions. [2023-11-06 22:51:54,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:54,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1074 transitions. [2023-11-06 22:51:54,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 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) [2023-11-06 22:51:54,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 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) [2023-11-06 22:51:54,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 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) [2023-11-06 22:51:54,143 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 395 flow. Second operand 3 states and 1074 transitions. [2023-11-06 22:51:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 461 flow [2023-11-06 22:51:54,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:54,158 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 341 flow [2023-11-06 22:51:54,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-06 22:51:54,166 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-11-06 22:51:54,167 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 341 flow [2023-11-06 22:51:54,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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) [2023-11-06 22:51:54,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:51:54,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:51:54,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash -817306192, now seen corresponding path program 1 times [2023-11-06 22:51:54,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:54,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451417619] [2023-11-06 22:51:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451417619] [2023-11-06 22:51:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451417619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:54,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926868271] [2023-11-06 22:51:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:54,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:54,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:54,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:51:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:54,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:51:54,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:54,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926868271] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:54,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:51:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:51:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849902094] [2023-11-06 22:51:54,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:51:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:54,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:51:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:51:54,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-06 22:51:54,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 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) [2023-11-06 22:51:54,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:54,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-06 22:51:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:55,450 INFO L124 PetriNetUnfolderBase]: 822/2957 cut-off events. [2023-11-06 22:51:55,450 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:51:55,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2957 events. 822/2957 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23990 event pairs, 684 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 4491. Up to 1527 conditions per place. [2023-11-06 22:51:55,474 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-11-06 22:51:55,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 489 flow [2023-11-06 22:51:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:51:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:51:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2015 transitions. [2023-11-06 22:51:55,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469598262757872 [2023-11-06 22:51:55,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2015 transitions. [2023-11-06 22:51:55,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2015 transitions. [2023-11-06 22:51:55,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:55,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2015 transitions. [2023-11-06 22:51:55,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.8333333333333) internal successors, (2015), 6 states have internal predecessors, (2015), 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) [2023-11-06 22:51:55,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 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) [2023-11-06 22:51:55,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 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) [2023-11-06 22:51:55,526 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 341 flow. Second operand 6 states and 2015 transitions. [2023-11-06 22:51:55,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 489 flow [2023-11-06 22:51:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 485 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:55,538 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 373 flow [2023-11-06 22:51:55,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-11-06 22:51:55,540 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-11-06 22:51:55,541 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 373 flow [2023-11-06 22:51:55,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 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) [2023-11-06 22:51:55,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:55,548 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:51:55,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:55,756 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:51:55,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1829498531, now seen corresponding path program 2 times [2023-11-06 22:51:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230262106] [2023-11-06 22:51:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:55,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:55,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230262106] [2023-11-06 22:51:55,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230262106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:55,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95173990] [2023-11-06 22:51:55,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:51:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:55,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:55,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:51:56,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:51:56,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:51:56,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:51:56,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:56,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:51:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95173990] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:56,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:51:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:51:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667076500] [2023-11-06 22:51:56,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:51:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:51:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:51:56,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-06 22:51:56,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 373 flow. Second operand has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 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) [2023-11-06 22:51:56,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:56,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-06 22:51:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:56,826 INFO L124 PetriNetUnfolderBase]: 822/2963 cut-off events. [2023-11-06 22:51:56,826 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-06 22:51:56,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 2963 events. 822/2963 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24059 event pairs, 684 based on Foata normal form. 6/2682 useless extension candidates. Maximal degree in co-relation 4482. Up to 1527 conditions per place. [2023-11-06 22:51:56,853 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-11-06 22:51:56,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 557 flow [2023-11-06 22:51:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:51:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:51:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3968 transitions. [2023-11-06 22:51:56,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385450597176982 [2023-11-06 22:51:56,870 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3968 transitions. [2023-11-06 22:51:56,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3968 transitions. [2023-11-06 22:51:56,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:56,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3968 transitions. [2023-11-06 22:51:56,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 330.6666666666667) internal successors, (3968), 12 states have internal predecessors, (3968), 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) [2023-11-06 22:51:56,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 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) [2023-11-06 22:51:56,918 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 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) [2023-11-06 22:51:56,918 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 373 flow. Second operand 12 states and 3968 transitions. [2023-11-06 22:51:56,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 557 flow [2023-11-06 22:51:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 543 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:56,927 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 443 flow [2023-11-06 22:51:56,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-11-06 22:51:56,929 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-11-06 22:51:56,930 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 443 flow [2023-11-06 22:51:56,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 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) [2023-11-06 22:51:56,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:56,935 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:51:56,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:57,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:57,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:51:57,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1067342973, now seen corresponding path program 3 times [2023-11-06 22:51:57,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:57,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649706002] [2023-11-06 22:51:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:57,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:57,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:57,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:57,235 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:57,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-06 22:51:57,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-06 22:51:57,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-06 22:51:57,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-06 22:51:57,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-06 22:51:57,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-06 22:51:57,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-06 22:51:57,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-06 22:51:57,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-06 22:51:57,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-06 22:51:57,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-06 22:51:57,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-06 22:51:57,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-06 22:51:57,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-06 22:51:57,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-06 22:51:57,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-06 22:51:57,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-06 22:51:57,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-06 22:51:57,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-06 22:51:57,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-06 22:51:57,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-06 22:51:57,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-06 22:51:57,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:51:57,246 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-06 22:51:57,250 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:57,250 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:51:57,356 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:51:57,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,620 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-06 22:51:57,621 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:51:57,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-06 22:51:57,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:57,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-06 22:51:57,883 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-06 22:51:57,884 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:51:57,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-06 22:51:58,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 128260 [2023-11-06 22:52:04,349 INFO L134 LiptonReduction]: Checked pairs total: 488298 [2023-11-06 22:52:04,349 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-11-06 22:52:04,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:04,363 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=LoopsAndPotentialCycles, 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;@76a1e9e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:04,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-06 22:52:04,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:04,379 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-06 22:52:04,379 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:04,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:04,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:04,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:52:04,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:04,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1331769326, now seen corresponding path program 1 times [2023-11-06 22:52:04,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:04,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889770857] [2023-11-06 22:52:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:04,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889770857] [2023-11-06 22:52:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889770857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:04,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:04,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291496765] [2023-11-06 22:52:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:04,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-06 22:52:04,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 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) [2023-11-06 22:52:04,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:04,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-06 22:52:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:15,064 INFO L124 PetriNetUnfolderBase]: 31138/70964 cut-off events. [2023-11-06 22:52:15,064 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-06 22:52:15,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115060 conditions, 70964 events. 31138/70964 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 818310 event pairs, 27108 based on Foata normal form. 9334/72932 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-11-06 22:52:15,645 INFO L140 encePairwiseOnDemand]: 753/799 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-11-06 22:52:15,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 618 flow [2023-11-06 22:52:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-06 22:52:15,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811430955360868 [2023-11-06 22:52:15,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-06 22:52:15,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-06 22:52:15,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:15,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-06 22:52:15,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 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) [2023-11-06 22:52:15,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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) [2023-11-06 22:52:15,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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) [2023-11-06 22:52:15,672 INFO L175 Difference]: Start difference. First operand has 209 places, 257 transitions, 530 flow. Second operand 3 states and 1393 transitions. [2023-11-06 22:52:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 618 flow [2023-11-06 22:52:15,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 618 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:52:15,683 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 456 flow [2023-11-06 22:52:15,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-11-06 22:52:15,687 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-11-06 22:52:15,688 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 456 flow [2023-11-06 22:52:15,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 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) [2023-11-06 22:52:15,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:15,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:52:15,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:52:15,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 944147115, now seen corresponding path program 1 times [2023-11-06 22:52:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348221513] [2023-11-06 22:52:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348221513] [2023-11-06 22:52:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348221513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304574117] [2023-11-06 22:52:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:15,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:15,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:15,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:15,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:52:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:15,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:52:15,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:52:15,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:15,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304574117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:15,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:52:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 22:52:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117132072] [2023-11-06 22:52:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:15,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:15,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-06 22:52:15,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 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) [2023-11-06 22:52:15,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:15,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-06 22:52:15,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:24,648 INFO L124 PetriNetUnfolderBase]: 30503/70084 cut-off events. [2023-11-06 22:52:24,648 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-11-06 22:52:24,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114152 conditions, 70084 events. 30503/70084 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 815886 event pairs, 13068 based on Foata normal form. 0/62936 useless extension candidates. Maximal degree in co-relation 114139. Up to 43937 conditions per place. [2023-11-06 22:52:25,118 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-06 22:52:25,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 712 flow [2023-11-06 22:52:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-06 22:52:25,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715477680433876 [2023-11-06 22:52:25,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-06 22:52:25,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-06 22:52:25,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:25,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-06 22:52:25,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 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) [2023-11-06 22:52:25,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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) [2023-11-06 22:52:25,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 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) [2023-11-06 22:52:25,152 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 456 flow. Second operand 3 states and 1370 transitions. [2023-11-06 22:52:25,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 712 flow [2023-11-06 22:52:25,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 708 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:25,163 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 464 flow [2023-11-06 22:52:25,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-11-06 22:52:25,169 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-11-06 22:52:25,169 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 464 flow [2023-11-06 22:52:25,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 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) [2023-11-06 22:52:25,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:25,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:25,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:25,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:25,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:52:25,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -380539492, now seen corresponding path program 1 times [2023-11-06 22:52:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716287663] [2023-11-06 22:52:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:25,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:25,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716287663] [2023-11-06 22:52:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716287663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071046321] [2023-11-06 22:52:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:25,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:25,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:25,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:52:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:25,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:52:25,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:25,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:25,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071046321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:25,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:52:25,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:52:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729714996] [2023-11-06 22:52:25,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:52:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:52:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:25,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-06 22:52:25,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 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) [2023-11-06 22:52:25,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:25,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-06 22:52:25,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:34,461 INFO L124 PetriNetUnfolderBase]: 31206/71217 cut-off events. [2023-11-06 22:52:34,462 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2023-11-06 22:52:34,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116070 conditions, 71217 events. 31206/71217 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 822097 event pairs, 27108 based on Foata normal form. 3/64037 useless extension candidates. Maximal degree in co-relation 116042. Up to 43958 conditions per place. [2023-11-06 22:52:34,927 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 85 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2023-11-06 22:52:34,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 219 transitions, 656 flow [2023-11-06 22:52:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:52:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:52:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2612 transitions. [2023-11-06 22:52:34,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448477263245723 [2023-11-06 22:52:34,947 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2612 transitions. [2023-11-06 22:52:34,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2612 transitions. [2023-11-06 22:52:34,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:34,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2612 transitions. [2023-11-06 22:52:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 435.3333333333333) internal successors, (2612), 6 states have internal predecessors, (2612), 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) [2023-11-06 22:52:35,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 799.0) internal successors, (5593), 7 states have internal predecessors, (5593), 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) [2023-11-06 22:52:35,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 799.0) internal successors, (5593), 7 states have internal predecessors, (5593), 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) [2023-11-06 22:52:35,004 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 464 flow. Second operand 6 states and 2612 transitions. [2023-11-06 22:52:35,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 219 transitions, 656 flow [2023-11-06 22:52:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 219 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:35,012 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 498 flow [2023-11-06 22:52:35,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2023-11-06 22:52:35,015 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2023-11-06 22:52:35,017 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 498 flow [2023-11-06 22:52:35,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 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) [2023-11-06 22:52:35,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:35,019 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:52:35,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:35,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:35,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:52:35,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:35,227 INFO L85 PathProgramCache]: Analyzing trace with hash 516320141, now seen corresponding path program 2 times [2023-11-06 22:52:35,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:35,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651596999] [2023-11-06 22:52:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651596999] [2023-11-06 22:52:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651596999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971212340] [2023-11-06 22:52:35,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:52:35,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:35,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:35,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:52:35,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:52:35,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:52:35,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:52:35,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:35,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:52:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971212340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:35,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:52:35,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:52:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661935758] [2023-11-06 22:52:35,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:35,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:52:35,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:52:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:52:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-06 22:52:35,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 498 flow. Second operand has 13 states, 13 states have (on average 421.38461538461536) internal successors, (5478), 13 states have internal predecessors, (5478), 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) [2023-11-06 22:52:35,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:35,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-06 22:52:35,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:44,979 INFO L124 PetriNetUnfolderBase]: 31206/71223 cut-off events. [2023-11-06 22:52:44,979 INFO L125 PetriNetUnfolderBase]: For 974/974 co-relation queries the response was YES. [2023-11-06 22:52:45,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116090 conditions, 71223 events. 31206/71223 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 821756 event pairs, 27108 based on Foata normal form. 6/64046 useless extension candidates. Maximal degree in co-relation 116030. Up to 43958 conditions per place. [2023-11-06 22:52:45,556 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 85 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2023-11-06 22:52:45,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 726 flow [2023-11-06 22:52:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:52:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:52:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5141 transitions. [2023-11-06 22:52:45,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361910721735502 [2023-11-06 22:52:45,584 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5141 transitions. [2023-11-06 22:52:45,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5141 transitions. [2023-11-06 22:52:45,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:45,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5141 transitions. [2023-11-06 22:52:45,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 428.4166666666667) internal successors, (5141), 12 states have internal predecessors, (5141), 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) [2023-11-06 22:52:45,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 799.0) internal successors, (10387), 13 states have internal predecessors, (10387), 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) [2023-11-06 22:52:45,637 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 799.0) internal successors, (10387), 13 states have internal predecessors, (10387), 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) [2023-11-06 22:52:45,637 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 498 flow. Second operand 12 states and 5141 transitions. [2023-11-06 22:52:45,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 726 flow [2023-11-06 22:52:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 225 transitions, 712 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:45,649 INFO L231 Difference]: Finished difference. Result has 237 places, 225 transitions, 568 flow [2023-11-06 22:52:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=568, PETRI_PLACES=237, PETRI_TRANSITIONS=225} [2023-11-06 22:52:45,651 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 28 predicate places. [2023-11-06 22:52:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 225 transitions, 568 flow [2023-11-06 22:52:45,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 421.38461538461536) internal successors, (5478), 13 states have internal predecessors, (5478), 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) [2023-11-06 22:52:45,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:45,654 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:52:45,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881171ca-51d3-4030-b17c-aa98e492a99f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:45,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:52:45,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:45,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1677532883, now seen corresponding path program 3 times [2023-11-06 22:52:45,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:45,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421002503] [2023-11-06 22:52:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:45,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:45,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:52:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:45,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:52:45,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:52:45,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-06 22:52:45,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-06 22:52:45,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-06 22:52:45,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-06 22:52:45,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-06 22:52:45,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-06 22:52:45,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-06 22:52:45,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-06 22:52:45,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-06 22:52:45,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-06 22:52:45,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-06 22:52:45,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-06 22:52:45,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-06 22:52:45,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-06 22:52:45,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-06 22:52:45,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-06 22:52:45,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-06 22:52:45,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-06 22:52:45,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-06 22:52:45,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-06 22:52:45,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-06 22:52:45,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-06 22:52:45,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-06 22:52:45,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-06 22:52:45,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-06 22:52:45,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-06 22:52:45,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-06 22:52:45,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:52:45,956 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-06 22:52:45,957 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:52:45,960 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:52:46,078 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:52:46,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:46,480 INFO L124 PetriNetUnfolderBase]: 179/1387 cut-off events. [2023-11-06 22:52:46,480 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:52:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 1387 events. 179/1387 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9404 event pairs, 1 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 979. Up to 16 conditions per place. [2023-11-06 22:52:46,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:46,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:46,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:52:46,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:46,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:46,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 601 transitions, 1229 flow [2023-11-06 22:52:47,323 INFO L124 PetriNetUnfolderBase]: 179/1387 cut-off events. [2023-11-06 22:52:47,323 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:52:47,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 1387 events. 179/1387 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9404 event pairs, 1 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 979. Up to 16 conditions per place. [2023-11-06 22:52:47,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 229680 [2023-11-06 22:52:53,929 INFO L134 LiptonReduction]: Checked pairs total: 871219 [2023-11-06 22:52:53,929 INFO L136 LiptonReduction]: Total number of compositions: 374 [2023-11-06 22:52:53,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:53,932 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=LoopsAndPotentialCycles, 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;@76a1e9e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:53,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-06 22:52:53,946 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:53,946 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-06 22:52:53,946 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:53,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:53,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:53,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:52:53,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash 58298315, now seen corresponding path program 1 times [2023-11-06 22:52:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:53,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622821827] [2023-11-06 22:52:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:53,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:53,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622821827] [2023-11-06 22:52:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622821827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:53,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:53,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110672761] [2023-11-06 22:52:53,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:53,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:53,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:54,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 517 out of 975 [2023-11-06 22:52:54,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 319 transitions, 665 flow. Second operand has 3 states, 3 states have (on average 519.0) internal successors, (1557), 3 states have internal predecessors, (1557), 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) [2023-11-06 22:52:54,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:54,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 517 of 975 [2023-11-06 22:52:54,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand