./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:23:29,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:23:29,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-23 22:23:29,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:23:29,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:23:29,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:23:29,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:23:29,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:23:29,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:23:29,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:23:29,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:23:29,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:23:29,433 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:23:29,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:23:29,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:23:29,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:23:29,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:23:29,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:23:29,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:23:29,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:23:29,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:23:29,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:23:29,439 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 22:23:29,439 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:23:29,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:23:29,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:23:29,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:23:29,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:23:29,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:23:29,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:23:29,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:29,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:23:29,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:23:29,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:23:29,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:23:29,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:23:29,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:23:29,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:23:29,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:23:29,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:23:29,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:23:29,447 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_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2023-11-23 22:23:29,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:23:29,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:23:29,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:23:29,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:23:29,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:23:29,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-23 22:23:32,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:23:33,285 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:23:33,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-23 22:23:33,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/data/faf7bd289/5d625c009ca2497299c1bb30b72eedee/FLAGc6e725e4d [2023-11-23 22:23:33,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/data/faf7bd289/5d625c009ca2497299c1bb30b72eedee [2023-11-23 22:23:33,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:23:33,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:23:33,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:33,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:23:33,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:23:33,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a1a922c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:33, skipping insertion in model container [2023-11-23 22:23:33,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:23:33" (1/1) ... [2023-11-23 22:23:33,389 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:23:34,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:34,179 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:23:34,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:23:34,377 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:23:34,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34 WrapperNode [2023-11-23 22:23:34,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:23:34,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:23:34,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:23:34,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,477 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 389 [2023-11-23 22:23:34,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:23:34,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:23:34,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:23:34,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:23:34,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:23:34,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:23:34,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:23:34,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (1/1) ... [2023-11-23 22:23:34,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:23:34,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:34,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:23:34,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:23:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:23:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:23:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:23:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:23:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:23:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:23:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:23:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-23 22:23:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-23 22:23:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:23:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:23:34,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:23:34,637 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:23:34,869 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:23:34,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:23:35,517 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:23:35,573 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:23:35,573 INFO L309 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-23 22:23:35,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:35 BoogieIcfgContainer [2023-11-23 22:23:35,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:23:35,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:23:35,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:23:35,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:23:35,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:23:33" (1/3) ... [2023-11-23 22:23:35,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e3fc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:35, skipping insertion in model container [2023-11-23 22:23:35,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:23:34" (2/3) ... [2023-11-23 22:23:35,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e3fc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:23:35, skipping insertion in model container [2023-11-23 22:23:35,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:23:35" (3/3) ... [2023-11-23 22:23:35,587 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-11-23 22:23:35,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:23:35,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:23:35,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-23 22:23:35,611 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:23:35,738 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 22:23:35,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 389 transitions, 785 flow [2023-11-23 22:23:36,095 INFO L124 PetriNetUnfolderBase]: 78/622 cut-off events. [2023-11-23 22:23:36,096 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:23:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 622 events. 78/622 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3518 event pairs, 0 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 352. Up to 8 conditions per place. [2023-11-23 22:23:36,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 389 transitions, 785 flow [2023-11-23 22:23:36,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 389 transitions, 785 flow [2023-11-23 22:23:36,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:23:36,165 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ad09297, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:23:36,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-23 22:23:36,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:23:36,183 INFO L124 PetriNetUnfolderBase]: 16/132 cut-off events. [2023-11-23 22:23:36,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:23:36,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:36,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:36,185 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)] === [2023-11-23 22:23:36,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1806513136, now seen corresponding path program 1 times [2023-11-23 22:23:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123058501] [2023-11-23 22:23:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123058501] [2023-11-23 22:23:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123058501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:36,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340639586] [2023-11-23 22:23:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:36,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:36,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:36,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 389 [2023-11-23 22:23:36,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 389 transitions, 785 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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) [2023-11-23 22:23:36,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:36,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 389 [2023-11-23 22:23:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:37,275 INFO L124 PetriNetUnfolderBase]: 181/2312 cut-off events. [2023-11-23 22:23:37,275 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-23 22:23:37,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 2312 events. 181/2312 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19848 event pairs, 136 based on Foata normal form. 404/2517 useless extension candidates. Maximal degree in co-relation 2385. Up to 340 conditions per place. [2023-11-23 22:23:37,296 INFO L140 encePairwiseOnDemand]: 345/389 looper letters, 31 selfloop transitions, 2 changer transitions 0/340 dead transitions. [2023-11-23 22:23:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 340 transitions, 753 flow [2023-11-23 22:23:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2023-11-23 22:23:37,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.869751499571551 [2023-11-23 22:23:37,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2023-11-23 22:23:37,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2023-11-23 22:23:37,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:37,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2023-11-23 22:23:37,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 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) [2023-11-23 22:23:37,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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) [2023-11-23 22:23:37,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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) [2023-11-23 22:23:37,348 INFO L175 Difference]: Start difference. First operand has 344 places, 389 transitions, 785 flow. Second operand 3 states and 1015 transitions. [2023-11-23 22:23:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 340 transitions, 753 flow [2023-11-23 22:23:37,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 340 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:23:37,368 INFO L231 Difference]: Finished difference. Result has 338 places, 340 transitions, 697 flow [2023-11-23 22:23:37,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=338, PETRI_TRANSITIONS=340} [2023-11-23 22:23:37,378 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, -6 predicate places. [2023-11-23 22:23:37,378 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 340 transitions, 697 flow [2023-11-23 22:23:37,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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) [2023-11-23 22:23:37,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:37,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:37,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:23:37,381 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)] === [2023-11-23 22:23:37,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1205446150, now seen corresponding path program 1 times [2023-11-23 22:23:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:37,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678789718] [2023-11-23 22:23:37,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:37,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:37,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678789718] [2023-11-23 22:23:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678789718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:37,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527696422] [2023-11-23 22:23:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:37,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:37,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:37,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:23:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:37,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:23:37,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:37,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527696422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:37,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:37,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 22:23:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102961122] [2023-11-23 22:23:37,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:37,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:23:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:23:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:23:37,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-23 22:23:37,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 340 transitions, 697 flow. Second operand has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 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) [2023-11-23 22:23:37,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:37,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-23 22:23:37,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:38,618 INFO L124 PetriNetUnfolderBase]: 181/2319 cut-off events. [2023-11-23 22:23:38,619 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2023-11-23 22:23:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 2319 events. 181/2319 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19881 event pairs, 136 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 2649. Up to 340 conditions per place. [2023-11-23 22:23:38,638 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 35 selfloop transitions, 9 changer transitions 0/348 dead transitions. [2023-11-23 22:23:38,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 348 transitions, 803 flow [2023-11-23 22:23:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:23:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:23:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2836 transitions. [2023-11-23 22:23:38,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8100542702085118 [2023-11-23 22:23:38,648 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2836 transitions. [2023-11-23 22:23:38,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2836 transitions. [2023-11-23 22:23:38,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:38,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2836 transitions. [2023-11-23 22:23:38,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 315.1111111111111) internal successors, (2836), 9 states have internal predecessors, (2836), 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) [2023-11-23 22:23:38,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 389.0) internal successors, (3890), 10 states have internal predecessors, (3890), 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) [2023-11-23 22:23:38,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 389.0) internal successors, (3890), 10 states have internal predecessors, (3890), 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) [2023-11-23 22:23:38,679 INFO L175 Difference]: Start difference. First operand has 338 places, 340 transitions, 697 flow. Second operand 9 states and 2836 transitions. [2023-11-23 22:23:38,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 348 transitions, 803 flow [2023-11-23 22:23:38,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 348 transitions, 801 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:38,692 INFO L231 Difference]: Finished difference. Result has 348 places, 346 transitions, 745 flow [2023-11-23 22:23:38,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=348, PETRI_TRANSITIONS=346} [2023-11-23 22:23:38,695 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 4 predicate places. [2023-11-23 22:23:38,695 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 346 transitions, 745 flow [2023-11-23 22:23:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 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) [2023-11-23 22:23:38,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:38,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:38,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:38,931 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)] === [2023-11-23 22:23:38,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:38,931 INFO L85 PathProgramCache]: Analyzing trace with hash -228352070, now seen corresponding path program 2 times [2023-11-23 22:23:38,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:38,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081628976] [2023-11-23 22:23:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:38,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:39,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081628976] [2023-11-23 22:23:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081628976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260030002] [2023-11-23 22:23:39,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:23:39,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:39,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:39,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:23:39,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:23:39,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:23:39,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:23:39,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:39,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260030002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:39,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-23 22:23:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101565488] [2023-11-23 22:23:39,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:39,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 22:23:39,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 22:23:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-23 22:23:39,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-23 22:23:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 346 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 311.94444444444446) internal successors, (5615), 18 states have internal predecessors, (5615), 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) [2023-11-23 22:23:39,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:39,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-23 22:23:39,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:40,346 INFO L124 PetriNetUnfolderBase]: 181/2339 cut-off events. [2023-11-23 22:23:40,346 INFO L125 PetriNetUnfolderBase]: For 36/37 co-relation queries the response was YES. [2023-11-23 22:23:40,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 2339 events. 181/2339 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19872 event pairs, 136 based on Foata normal form. 4/2144 useless extension candidates. Maximal degree in co-relation 2627. Up to 340 conditions per place. [2023-11-23 22:23:40,370 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 39 selfloop transitions, 21 changer transitions 0/364 dead transitions. [2023-11-23 22:23:40,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 364 transitions, 961 flow [2023-11-23 22:23:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 22:23:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-23 22:23:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6574 transitions. [2023-11-23 22:23:40,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8047496633614886 [2023-11-23 22:23:40,391 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6574 transitions. [2023-11-23 22:23:40,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6574 transitions. [2023-11-23 22:23:40,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:40,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6574 transitions. [2023-11-23 22:23:40,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 313.04761904761904) internal successors, (6574), 21 states have internal predecessors, (6574), 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) [2023-11-23 22:23:40,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 389.0) internal successors, (8558), 22 states have internal predecessors, (8558), 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) [2023-11-23 22:23:40,493 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 389.0) internal successors, (8558), 22 states have internal predecessors, (8558), 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) [2023-11-23 22:23:40,494 INFO L175 Difference]: Start difference. First operand has 348 places, 346 transitions, 745 flow. Second operand 21 states and 6574 transitions. [2023-11-23 22:23:40,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 364 transitions, 961 flow [2023-11-23 22:23:40,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 364 transitions, 947 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:40,509 INFO L231 Difference]: Finished difference. Result has 372 places, 359 transitions, 869 flow [2023-11-23 22:23:40,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=869, PETRI_PLACES=372, PETRI_TRANSITIONS=359} [2023-11-23 22:23:40,513 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 28 predicate places. [2023-11-23 22:23:40,513 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 359 transitions, 869 flow [2023-11-23 22:23:40,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.94444444444446) internal successors, (5615), 18 states have internal predecessors, (5615), 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) [2023-11-23 22:23:40,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:40,517 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:40,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:40,740 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)] === [2023-11-23 22:23:40,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash -88761542, now seen corresponding path program 3 times [2023-11-23 22:23:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853513123] [2023-11-23 22:23:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:41,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853513123] [2023-11-23 22:23:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853513123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:41,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847479266] [2023-11-23 22:23:41,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 22:23:41,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:41,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:41,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:23:41,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-23 22:23:41,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:23:41,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:23:41,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:41,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:23:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847479266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:41,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:41,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-23 22:23:41,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73043225] [2023-11-23 22:23:41,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:41,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 22:23:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 22:23:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-23 22:23:41,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-23 22:23:41,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 359 transitions, 869 flow. Second operand has 23 states, 23 states have (on average 312.04347826086956) internal successors, (7177), 23 states have internal predecessors, (7177), 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) [2023-11-23 22:23:41,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:41,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-23 22:23:41,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:42,799 INFO L124 PetriNetUnfolderBase]: 181/2354 cut-off events. [2023-11-23 22:23:42,800 INFO L125 PetriNetUnfolderBase]: For 137/138 co-relation queries the response was YES. [2023-11-23 22:23:42,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 2354 events. 181/2354 cut-off events. For 137/138 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19853 event pairs, 136 based on Foata normal form. 3/2158 useless extension candidates. Maximal degree in co-relation 2631. Up to 340 conditions per place. [2023-11-23 22:23:42,822 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 42 selfloop transitions, 30 changer transitions 0/376 dead transitions. [2023-11-23 22:23:42,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 376 transitions, 1141 flow [2023-11-23 22:23:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-23 22:23:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-23 22:23:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9375 transitions. [2023-11-23 22:23:42,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8033419023136247 [2023-11-23 22:23:42,857 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9375 transitions. [2023-11-23 22:23:42,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9375 transitions. [2023-11-23 22:23:42,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:42,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9375 transitions. [2023-11-23 22:23:42,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 312.5) internal successors, (9375), 30 states have internal predecessors, (9375), 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) [2023-11-23 22:23:42,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 389.0) internal successors, (12059), 31 states have internal predecessors, (12059), 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) [2023-11-23 22:23:42,927 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 389.0) internal successors, (12059), 31 states have internal predecessors, (12059), 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) [2023-11-23 22:23:42,928 INFO L175 Difference]: Start difference. First operand has 372 places, 359 transitions, 869 flow. Second operand 30 states and 9375 transitions. [2023-11-23 22:23:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 376 transitions, 1141 flow [2023-11-23 22:23:42,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 376 transitions, 1111 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-23 22:23:42,943 INFO L231 Difference]: Finished difference. Result has 399 places, 369 transitions, 997 flow [2023-11-23 22:23:42,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=997, PETRI_PLACES=399, PETRI_TRANSITIONS=369} [2023-11-23 22:23:42,947 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 55 predicate places. [2023-11-23 22:23:42,947 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 369 transitions, 997 flow [2023-11-23 22:23:42,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 312.04347826086956) internal successors, (7177), 23 states have internal predecessors, (7177), 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) [2023-11-23 22:23:42,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:42,952 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:42,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:43,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-23 22:23:43,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1340647600, now seen corresponding path program 4 times [2023-11-23 22:23:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356605502] [2023-11-23 22:23:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:23:43,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:23:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:23:43,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:23:43,286 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:23:43,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-23 22:23:43,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-23 22:23:43,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-23 22:23:43,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-23 22:23:43,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-23 22:23:43,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-23 22:23:43,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-23 22:23:43,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-23 22:23:43,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-23 22:23:43,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-23 22:23:43,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-23 22:23:43,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-23 22:23:43,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-23 22:23:43,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-23 22:23:43,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-23 22:23:43,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-23 22:23:43,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-23 22:23:43,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-23 22:23:43,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-23 22:23:43,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-23 22:23:43,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-23 22:23:43,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-23 22:23:43,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:23:43,300 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-23 22:23:43,303 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:23:43,303 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 22:23:43,372 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:23:43,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 505 transitions, 1026 flow [2023-11-23 22:23:43,640 INFO L124 PetriNetUnfolderBase]: 126/1003 cut-off events. [2023-11-23 22:23:43,640 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-23 22:23:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 1003 events. 126/1003 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6521 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 624. Up to 12 conditions per place. [2023-11-23 22:23:43,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 505 transitions, 1026 flow [2023-11-23 22:23:43,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 505 transitions, 1026 flow [2023-11-23 22:23:43,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:23:43,687 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ad09297, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:23:43,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-23 22:23:43,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:23:43,709 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-11-23 22:23:43,709 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:23:43,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:43,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:43,710 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)] === [2023-11-23 22:23:43,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1464586247, now seen corresponding path program 1 times [2023-11-23 22:23:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764653748] [2023-11-23 22:23:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764653748] [2023-11-23 22:23:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764653748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:43,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:23:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:23:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068788084] [2023-11-23 22:23:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:23:43,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2023-11-23 22:23:43,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 505 transitions, 1026 flow. Second operand has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2023-11-23 22:23:43,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:43,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2023-11-23 22:23:43,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:48,486 INFO L124 PetriNetUnfolderBase]: 3251/22814 cut-off events. [2023-11-23 22:23:48,487 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2023-11-23 22:23:48,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27594 conditions, 22814 events. 3251/22814 cut-off events. For 153/157 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 312144 event pairs, 2680 based on Foata normal form. 5658/26583 useless extension candidates. Maximal degree in co-relation 24730. Up to 4707 conditions per place. [2023-11-23 22:23:48,713 INFO L140 encePairwiseOnDemand]: 448/505 looper letters, 41 selfloop transitions, 2 changer transitions 0/440 dead transitions. [2023-11-23 22:23:48,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 440 transitions, 982 flow [2023-11-23 22:23:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2023-11-23 22:23:48,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8673267326732673 [2023-11-23 22:23:48,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2023-11-23 22:23:48,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2023-11-23 22:23:48,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:48,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2023-11-23 22:23:48,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 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) [2023-11-23 22:23:48,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-23 22:23:48,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-23 22:23:48,729 INFO L175 Difference]: Start difference. First operand has 446 places, 505 transitions, 1026 flow. Second operand 3 states and 1314 transitions. [2023-11-23 22:23:48,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 440 transitions, 982 flow [2023-11-23 22:23:48,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 440 transitions, 982 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:23:48,742 INFO L231 Difference]: Finished difference. Result has 437 places, 440 transitions, 906 flow [2023-11-23 22:23:48,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=906, PETRI_PLACES=437, PETRI_TRANSITIONS=440} [2023-11-23 22:23:48,744 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, -9 predicate places. [2023-11-23 22:23:48,744 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 440 transitions, 906 flow [2023-11-23 22:23:48,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2023-11-23 22:23:48,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:48,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:48,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:23:48,746 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)] === [2023-11-23 22:23:48,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1167513573, now seen corresponding path program 1 times [2023-11-23 22:23:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042290131] [2023-11-23 22:23:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:23:48,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042290131] [2023-11-23 22:23:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042290131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806850135] [2023-11-23 22:23:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:48,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:48,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:48,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:23:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:48,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:23:48,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:23:48,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:23:48,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806850135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:23:48,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:23:48,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-23 22:23:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143715168] [2023-11-23 22:23:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:23:48,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:23:48,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:23:48,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:23:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2023-11-23 22:23:48,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 440 transitions, 906 flow. Second operand has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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) [2023-11-23 22:23:48,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:48,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2023-11-23 22:23:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:52,958 INFO L124 PetriNetUnfolderBase]: 3437/22710 cut-off events. [2023-11-23 22:23:52,959 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-23 22:23:53,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27828 conditions, 22710 events. 3437/22710 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 312640 event pairs, 1456 based on Foata normal form. 1/20825 useless extension candidates. Maximal degree in co-relation 27795. Up to 5049 conditions per place. [2023-11-23 22:23:53,318 INFO L140 encePairwiseOnDemand]: 502/505 looper letters, 49 selfloop transitions, 2 changer transitions 0/449 dead transitions. [2023-11-23 22:23:53,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 449 transitions, 1026 flow [2023-11-23 22:23:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:23:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:23:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1267 transitions. [2023-11-23 22:23:53,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8363036303630363 [2023-11-23 22:23:53,325 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1267 transitions. [2023-11-23 22:23:53,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1267 transitions. [2023-11-23 22:23:53,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:53,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1267 transitions. [2023-11-23 22:23:53,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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) [2023-11-23 22:23:53,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-23 22:23:53,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-23 22:23:53,341 INFO L175 Difference]: Start difference. First operand has 437 places, 440 transitions, 906 flow. Second operand 3 states and 1267 transitions. [2023-11-23 22:23:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 449 transitions, 1026 flow [2023-11-23 22:23:53,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 449 transitions, 1024 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:53,356 INFO L231 Difference]: Finished difference. Result has 439 places, 441 transitions, 916 flow [2023-11-23 22:23:53,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=916, PETRI_PLACES=439, PETRI_TRANSITIONS=441} [2023-11-23 22:23:53,359 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, -7 predicate places. [2023-11-23 22:23:53,360 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 441 transitions, 916 flow [2023-11-23 22:23:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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) [2023-11-23 22:23:53,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:53,361 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:53,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:53,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:53,586 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)] === [2023-11-23 22:23:53,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash 5185784, now seen corresponding path program 1 times [2023-11-23 22:23:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:53,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850199107] [2023-11-23 22:23:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850199107] [2023-11-23 22:23:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850199107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485538288] [2023-11-23 22:23:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:53,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:53,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:53,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:53,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:23:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:53,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:23:53,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:53,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485538288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:53,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:53,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-23 22:23:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750835088] [2023-11-23 22:23:53,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:23:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:23:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:23:53,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-23 22:23:53,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 441 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 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) [2023-11-23 22:23:53,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:53,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-23 22:23:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:23:58,220 INFO L124 PetriNetUnfolderBase]: 3247/22641 cut-off events. [2023-11-23 22:23:58,220 INFO L125 PetriNetUnfolderBase]: For 154/158 co-relation queries the response was YES. [2023-11-23 22:23:58,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27430 conditions, 22641 events. 3247/22641 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 311007 event pairs, 2680 based on Foata normal form. 2/20770 useless extension candidates. Maximal degree in co-relation 27366. Up to 4691 conditions per place. [2023-11-23 22:23:58,464 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 45 selfloop transitions, 9 changer transitions 0/449 dead transitions. [2023-11-23 22:23:58,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 1042 flow [2023-11-23 22:23:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:23:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:23:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3674 transitions. [2023-11-23 22:23:58,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083608360836083 [2023-11-23 22:23:58,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3674 transitions. [2023-11-23 22:23:58,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3674 transitions. [2023-11-23 22:23:58,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:23:58,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3674 transitions. [2023-11-23 22:23:58,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 408.22222222222223) internal successors, (3674), 9 states have internal predecessors, (3674), 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) [2023-11-23 22:23:58,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 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) [2023-11-23 22:23:58,514 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 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) [2023-11-23 22:23:58,514 INFO L175 Difference]: Start difference. First operand has 439 places, 441 transitions, 916 flow. Second operand 9 states and 3674 transitions. [2023-11-23 22:23:58,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 1042 flow [2023-11-23 22:23:58,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 449 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:23:58,529 INFO L231 Difference]: Finished difference. Result has 449 places, 447 transitions, 964 flow [2023-11-23 22:23:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=449, PETRI_TRANSITIONS=447} [2023-11-23 22:23:58,531 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 3 predicate places. [2023-11-23 22:23:58,531 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 447 transitions, 964 flow [2023-11-23 22:23:58,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 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) [2023-11-23 22:23:58,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:23:58,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:23:58,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:23:58,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 22:23:58,748 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)] === [2023-11-23 22:23:58,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:23:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2029278632, now seen corresponding path program 2 times [2023-11-23 22:23:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:23:58,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944309661] [2023-11-23 22:23:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:23:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:23:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:23:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:58,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:23:58,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944309661] [2023-11-23 22:23:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944309661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:23:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156052529] [2023-11-23 22:23:58,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:23:58,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:23:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:23:58,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:23:58,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:23:59,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:23:59,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:23:59,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:23:59,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:23:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:59,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:23:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:23:59,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156052529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:23:59,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:23:59,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-23 22:23:59,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358176785] [2023-11-23 22:23:59,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:23:59,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 22:23:59,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:23:59,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 22:23:59,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-23 22:23:59,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-23 22:23:59,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 447 transitions, 964 flow. Second operand has 18 states, 18 states have (on average 404.0) internal successors, (7272), 18 states have internal predecessors, (7272), 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) [2023-11-23 22:23:59,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:23:59,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-23 22:23:59,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:04,202 INFO L124 PetriNetUnfolderBase]: 3247/22661 cut-off events. [2023-11-23 22:24:04,202 INFO L125 PetriNetUnfolderBase]: For 181/185 co-relation queries the response was YES. [2023-11-23 22:24:04,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27515 conditions, 22661 events. 3247/22661 cut-off events. For 181/185 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 310906 event pairs, 2680 based on Foata normal form. 4/20792 useless extension candidates. Maximal degree in co-relation 27370. Up to 4691 conditions per place. [2023-11-23 22:24:04,455 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 49 selfloop transitions, 21 changer transitions 0/465 dead transitions. [2023-11-23 22:24:04,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 465 transitions, 1200 flow [2023-11-23 22:24:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 22:24:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-23 22:24:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8516 transitions. [2023-11-23 22:24:04,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8030174446016031 [2023-11-23 22:24:04,488 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8516 transitions. [2023-11-23 22:24:04,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8516 transitions. [2023-11-23 22:24:04,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:04,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8516 transitions. [2023-11-23 22:24:04,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 405.5238095238095) internal successors, (8516), 21 states have internal predecessors, (8516), 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) [2023-11-23 22:24:04,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 505.0) internal successors, (11110), 22 states have internal predecessors, (11110), 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) [2023-11-23 22:24:04,554 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 505.0) internal successors, (11110), 22 states have internal predecessors, (11110), 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) [2023-11-23 22:24:04,555 INFO L175 Difference]: Start difference. First operand has 449 places, 447 transitions, 964 flow. Second operand 21 states and 8516 transitions. [2023-11-23 22:24:04,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 465 transitions, 1200 flow [2023-11-23 22:24:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 465 transitions, 1186 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-23 22:24:04,568 INFO L231 Difference]: Finished difference. Result has 473 places, 460 transitions, 1088 flow [2023-11-23 22:24:04,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1088, PETRI_PLACES=473, PETRI_TRANSITIONS=460} [2023-11-23 22:24:04,572 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 27 predicate places. [2023-11-23 22:24:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 460 transitions, 1088 flow [2023-11-23 22:24:04,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 404.0) internal successors, (7272), 18 states have internal predecessors, (7272), 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) [2023-11-23 22:24:04,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:04,576 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:04,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:24:04,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:24:04,798 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)] === [2023-11-23 22:24:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1907234072, now seen corresponding path program 3 times [2023-11-23 22:24:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:04,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090429389] [2023-11-23 22:24:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:04,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:24:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090429389] [2023-11-23 22:24:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090429389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:24:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141516127] [2023-11-23 22:24:05,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 22:24:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:24:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:24:05,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:24:05,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:24:05,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-23 22:24:05,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:24:05,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:24:05,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:24:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:24:05,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:24:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 22:24:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141516127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:24:05,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:24:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-23 22:24:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382252816] [2023-11-23 22:24:05,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:24:05,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 22:24:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 22:24:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-23 22:24:05,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-23 22:24:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 460 transitions, 1088 flow. Second operand has 23 states, 23 states have (on average 404.0869565217391) internal successors, (9294), 23 states have internal predecessors, (9294), 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) [2023-11-23 22:24:05,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:05,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-23 22:24:05,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:24:11,191 INFO L124 PetriNetUnfolderBase]: 3247/22676 cut-off events. [2023-11-23 22:24:11,191 INFO L125 PetriNetUnfolderBase]: For 282/286 co-relation queries the response was YES. [2023-11-23 22:24:11,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27613 conditions, 22676 events. 3247/22676 cut-off events. For 282/286 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 311035 event pairs, 2680 based on Foata normal form. 3/20806 useless extension candidates. Maximal degree in co-relation 27374. Up to 4691 conditions per place. [2023-11-23 22:24:11,471 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 52 selfloop transitions, 30 changer transitions 0/477 dead transitions. [2023-11-23 22:24:11,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 477 transitions, 1380 flow [2023-11-23 22:24:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-23 22:24:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-23 22:24:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12145 transitions. [2023-11-23 22:24:11,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8016501650165017 [2023-11-23 22:24:11,496 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12145 transitions. [2023-11-23 22:24:11,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12145 transitions. [2023-11-23 22:24:11,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:24:11,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12145 transitions. [2023-11-23 22:24:11,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 404.8333333333333) internal successors, (12145), 30 states have internal predecessors, (12145), 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) [2023-11-23 22:24:11,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 505.0) internal successors, (15655), 31 states have internal predecessors, (15655), 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) [2023-11-23 22:24:11,570 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 505.0) internal successors, (15655), 31 states have internal predecessors, (15655), 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) [2023-11-23 22:24:11,571 INFO L175 Difference]: Start difference. First operand has 473 places, 460 transitions, 1088 flow. Second operand 30 states and 12145 transitions. [2023-11-23 22:24:11,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 477 transitions, 1380 flow [2023-11-23 22:24:11,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 477 transitions, 1350 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-23 22:24:11,587 INFO L231 Difference]: Finished difference. Result has 500 places, 470 transitions, 1216 flow [2023-11-23 22:24:11,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1216, PETRI_PLACES=500, PETRI_TRANSITIONS=470} [2023-11-23 22:24:11,590 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 54 predicate places. [2023-11-23 22:24:11,590 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 470 transitions, 1216 flow [2023-11-23 22:24:11,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 404.0869565217391) internal successors, (9294), 23 states have internal predecessors, (9294), 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) [2023-11-23 22:24:11,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:11,594 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:11,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:24:11,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407441dd-a9fc-44de-b74d-31f080b8b3d4/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:24:11,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-23 22:24:11,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1063498937, now seen corresponding path program 4 times [2023-11-23 22:24:11,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:11,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144449151] [2023-11-23 22:24:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:11,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:11,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:24:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:24:11,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:24:11,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:24:11,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-23 22:24:11,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-23 22:24:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-23 22:24:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-23 22:24:11,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-23 22:24:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-23 22:24:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-23 22:24:11,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-23 22:24:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-23 22:24:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-23 22:24:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-23 22:24:11,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-23 22:24:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-23 22:24:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-23 22:24:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-23 22:24:11,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-23 22:24:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-23 22:24:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-23 22:24:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-23 22:24:11,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-23 22:24:11,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-23 22:24:11,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-23 22:24:11,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-23 22:24:11,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-23 22:24:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-23 22:24:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-23 22:24:11,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-23 22:24:11,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 22:24:11,935 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-23 22:24:11,938 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 22:24:11,938 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 22:24:12,045 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 22:24:12,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 621 transitions, 1269 flow [2023-11-23 22:24:12,681 INFO L124 PetriNetUnfolderBase]: 179/1431 cut-off events. [2023-11-23 22:24:12,681 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-23 22:24:12,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 1431 events. 179/1431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9841 event pairs, 1 based on Foata normal form. 0/1185 useless extension candidates. Maximal degree in co-relation 1011. Up to 16 conditions per place. [2023-11-23 22:24:12,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 621 transitions, 1269 flow [2023-11-23 22:24:12,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 548 places, 621 transitions, 1269 flow [2023-11-23 22:24:12,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:24:12,730 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ad09297, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:24:12,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-23 22:24:12,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:24:12,746 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-11-23 22:24:12,746 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:24:12,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:24:12,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:24:12,747 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)] === [2023-11-23 22:24:12,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:24:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1902747162, now seen corresponding path program 1 times [2023-11-23 22:24:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:24:12,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390299802] [2023-11-23 22:24:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:24:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:24:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:24:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:24:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:24:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390299802] [2023-11-23 22:24:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390299802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:24:12,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:24:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:24:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567414] [2023-11-23 22:24:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:24:12,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:24:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:24:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:24:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:24:12,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 621 [2023-11-23 22:24:12,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 621 transitions, 1269 flow. Second operand has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 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) [2023-11-23 22:24:12,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:24:12,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 621 [2023-11-23 22:24:12,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand