./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:35:35,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:35:35,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 04:35:35,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:35:35,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:35:35,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:35:35,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:35:35,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:35:35,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:35:35,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:35:35,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:35:35,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:35:35,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:35:35,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:35:35,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:35:35,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:35:35,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:35:35,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:35:35,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:35:35,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:35:35,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:35:35,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:35:35,461 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 04:35:35,461 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:35:35,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:35:35,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:35:35,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:35:35,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:35:35,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:35:35,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:35:35,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:35:35,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:35:35,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:35:35,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:35:35,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:35:35,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:35:35,467 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_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2023-11-29 04:35:35,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:35:35,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:35:35,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:35:35,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:35:35,683 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:35:35,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-29 04:35:38,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:35:38,672 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:35:38,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-29 04:35:38,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/data/823cf4f1e/c2c0b1a4e75843cab85bfaa01d6ffc04/FLAG685c08046 [2023-11-29 04:35:38,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/data/823cf4f1e/c2c0b1a4e75843cab85bfaa01d6ffc04 [2023-11-29 04:35:38,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:35:38,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:35:38,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:35:38,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:35:38,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:35:38,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:35:38" (1/1) ... [2023-11-29 04:35:38,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c3fc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:38, skipping insertion in model container [2023-11-29 04:35:38,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:35:38" (1/1) ... [2023-11-29 04:35:38,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:35:39,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:35:39,122 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:35:39,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:35:39,238 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:35:39,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39 WrapperNode [2023-11-29 04:35:39,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:35:39,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:35:39,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:35:39,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:35:39,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,295 INFO L138 Inliner]: procedures = 263, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 124 [2023-11-29 04:35:39,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:35:39,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:35:39,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:35:39,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:35:39,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:35:39,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:35:39,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:35:39,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:35:39,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (1/1) ... [2023-11-29 04:35:39,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:35:39,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:39,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:35:39,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:35:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:35:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:35:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:35:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 04:35:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 04:35:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:35:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:35:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 04:35:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 04:35:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:35:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:35:39,412 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:35:39,572 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:35:39,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:35:39,814 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:35:39,841 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:35:39,841 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 04:35:39,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:35:39 BoogieIcfgContainer [2023-11-29 04:35:39,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:35:39,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:35:39,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:35:39,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:35:39,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:35:38" (1/3) ... [2023-11-29 04:35:39,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cb0d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:35:39, skipping insertion in model container [2023-11-29 04:35:39,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:35:39" (2/3) ... [2023-11-29 04:35:39,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cb0d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:35:39, skipping insertion in model container [2023-11-29 04:35:39,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:35:39" (3/3) ... [2023-11-29 04:35:39,853 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-11-29 04:35:39,862 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:35:39,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:35:39,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 04:35:39,874 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:35:39,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 04:35:39,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 260 flow [2023-11-29 04:35:40,040 INFO L124 PetriNetUnfolderBase]: 6/127 cut-off events. [2023-11-29 04:35:40,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:35:40,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 236 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-29 04:35:40,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 260 flow [2023-11-29 04:35:40,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2023-11-29 04:35:40,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:35:40,068 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;@1d8b209b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:35:40,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 04:35:40,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:35:40,086 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2023-11-29 04:35:40,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:35:40,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:40,087 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] [2023-11-29 04:35:40,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:40,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1877440983, now seen corresponding path program 1 times [2023-11-29 04:35:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:40,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251082830] [2023-11-29 04:35:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:40,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:40,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:40,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251082830] [2023-11-29 04:35:40,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251082830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:40,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:35:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:35:40,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303920550] [2023-11-29 04:35:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:35:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:35:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:35:40,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 128 [2023-11-29 04:35:40,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:40,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 128 [2023-11-29 04:35:40,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:40,498 INFO L124 PetriNetUnfolderBase]: 15/268 cut-off events. [2023-11-29 04:35:40,499 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:35:40,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 268 events. 15/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 959 event pairs, 10 based on Foata normal form. 12/259 useless extension candidates. Maximal degree in co-relation 272. Up to 36 conditions per place. [2023-11-29 04:35:40,503 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 12 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-29 04:35:40,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 281 flow [2023-11-29 04:35:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:35:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:35:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-29 04:35:40,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244791666666666 [2023-11-29 04:35:40,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:40,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,535 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 257 flow. Second operand 3 states and 355 transitions. [2023-11-29 04:35:40,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 281 flow [2023-11-29 04:35:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:35:40,544 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 262 flow [2023-11-29 04:35:40,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2023-11-29 04:35:40,549 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2023-11-29 04:35:40,549 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 262 flow [2023-11-29 04:35:40,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:40,550 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] [2023-11-29 04:35:40,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:35:40,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:40,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -872710918, now seen corresponding path program 1 times [2023-11-29 04:35:40,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:40,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631589714] [2023-11-29 04:35:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631589714] [2023-11-29 04:35:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631589714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:40,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298483213] [2023-11-29 04:35:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:40,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:40,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:40,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:40,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:35:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:40,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:35:40,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:35:40,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298483213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:35:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009289675] [2023-11-29 04:35:40,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:35:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:35:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:35:40,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 128 [2023-11-29 04:35:40,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:40,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 128 [2023-11-29 04:35:40,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:40,966 INFO L124 PetriNetUnfolderBase]: 35/428 cut-off events. [2023-11-29 04:35:40,966 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:35:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 428 events. 35/428 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1757 event pairs, 10 based on Foata normal form. 3/397 useless extension candidates. Maximal degree in co-relation 487. Up to 51 conditions per place. [2023-11-29 04:35:40,971 INFO L140 encePairwiseOnDemand]: 125/128 looper letters, 16 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-11-29 04:35:40,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 308 flow [2023-11-29 04:35:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:35:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:35:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-29 04:35:40,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9244791666666666 [2023-11-29 04:35:40,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:40,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-29 04:35:40,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,982 INFO L175 Difference]: Start difference. First operand has 127 places, 125 transitions, 262 flow. Second operand 3 states and 355 transitions. [2023-11-29 04:35:40,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 308 flow [2023-11-29 04:35:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:35:40,987 INFO L231 Difference]: Finished difference. Result has 129 places, 126 transitions, 272 flow [2023-11-29 04:35:40,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=129, PETRI_TRANSITIONS=126} [2023-11-29 04:35:40,988 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 4 predicate places. [2023-11-29 04:35:40,988 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 272 flow [2023-11-29 04:35:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:40,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:40,989 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] [2023-11-29 04:35:40,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:35:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:41,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:41,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2113158627, now seen corresponding path program 1 times [2023-11-29 04:35:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105429873] [2023-11-29 04:35:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:41,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105429873] [2023-11-29 04:35:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105429873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816280255] [2023-11-29 04:35:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:41,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:41,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:41,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:41,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:35:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:41,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:41,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:41,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816280255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:41,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:41,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 04:35:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069690486] [2023-11-29 04:35:41,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:35:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:35:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:35:41,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 04:35:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 04:35:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:41,692 INFO L124 PetriNetUnfolderBase]: 24/432 cut-off events. [2023-11-29 04:35:41,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:35:41,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 432 events. 24/432 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1565 event pairs, 14 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 460. Up to 51 conditions per place. [2023-11-29 04:35:41,696 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 16 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-11-29 04:35:41,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 340 flow [2023-11-29 04:35:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:35:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:35:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1008 transitions. [2023-11-29 04:35:41,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875 [2023-11-29 04:35:41,700 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1008 transitions. [2023-11-29 04:35:41,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1008 transitions. [2023-11-29 04:35:41,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:41,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1008 transitions. [2023-11-29 04:35:41,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:41,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:41,711 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:41,712 INFO L175 Difference]: Start difference. First operand has 129 places, 126 transitions, 272 flow. Second operand 9 states and 1008 transitions. [2023-11-29 04:35:41,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 340 flow [2023-11-29 04:35:41,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 134 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:35:41,716 INFO L231 Difference]: Finished difference. Result has 139 places, 132 transitions, 320 flow [2023-11-29 04:35:41,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2023-11-29 04:35:41,718 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 14 predicate places. [2023-11-29 04:35:41,718 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 320 flow [2023-11-29 04:35:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:41,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:41,720 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:41,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:35:41,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 04:35:41,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -68984835, now seen corresponding path program 2 times [2023-11-29 04:35:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491768670] [2023-11-29 04:35:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491768670] [2023-11-29 04:35:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491768670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340658497] [2023-11-29 04:35:42,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:42,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:42,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:35:42,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:42,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:42,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:35:42,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:42,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:35:42,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 04:35:42,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:35:42,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 04:35:42,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:35:42,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 04:35:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:35:42,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340658497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 04:35:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189917060] [2023-11-29 04:35:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:35:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:35:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:35:42,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:35:42,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:42,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:42,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:35:42,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:42,961 INFO L124 PetriNetUnfolderBase]: 333/1500 cut-off events. [2023-11-29 04:35:42,961 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 04:35:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1500 events. 333/1500 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10232 event pairs, 160 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 2158. Up to 544 conditions per place. [2023-11-29 04:35:42,971 INFO L140 encePairwiseOnDemand]: 117/128 looper letters, 36 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-11-29 04:35:42,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 494 flow [2023-11-29 04:35:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:35:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:35:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 635 transitions. [2023-11-29 04:35:42,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8268229166666666 [2023-11-29 04:35:42,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 635 transitions. [2023-11-29 04:35:42,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 635 transitions. [2023-11-29 04:35:42,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:42,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 635 transitions. [2023-11-29 04:35:42,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:42,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:42,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:42,981 INFO L175 Difference]: Start difference. First operand has 139 places, 132 transitions, 320 flow. Second operand 6 states and 635 transitions. [2023-11-29 04:35:42,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 494 flow [2023-11-29 04:35:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 161 transitions, 488 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 04:35:42,986 INFO L231 Difference]: Finished difference. Result has 148 places, 153 transitions, 464 flow [2023-11-29 04:35:42,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=148, PETRI_TRANSITIONS=153} [2023-11-29 04:35:42,988 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 23 predicate places. [2023-11-29 04:35:42,988 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 153 transitions, 464 flow [2023-11-29 04:35:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:42,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:42,989 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:42,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:35:43,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:43,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:43,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash -5944653, now seen corresponding path program 1 times [2023-11-29 04:35:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767912600] [2023-11-29 04:35:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767912600] [2023-11-29 04:35:43,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767912600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740127370] [2023-11-29 04:35:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:43,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:43,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:43,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:35:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:43,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:35:43,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:43,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740127370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:43,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 04:35:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649322083] [2023-11-29 04:35:43,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:43,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:35:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:43,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:35:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:35:43,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 04:35:43,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 153 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:43,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:43,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 04:35:43,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:44,007 INFO L124 PetriNetUnfolderBase]: 118/1052 cut-off events. [2023-11-29 04:35:44,007 INFO L125 PetriNetUnfolderBase]: For 77/83 co-relation queries the response was YES. [2023-11-29 04:35:44,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1052 events. 118/1052 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5892 event pairs, 24 based on Foata normal form. 4/982 useless extension candidates. Maximal degree in co-relation 1420. Up to 133 conditions per place. [2023-11-29 04:35:44,015 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 20 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2023-11-29 04:35:44,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 171 transitions, 634 flow [2023-11-29 04:35:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:35:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:35:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2334 transitions. [2023-11-29 04:35:44,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8683035714285714 [2023-11-29 04:35:44,024 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2334 transitions. [2023-11-29 04:35:44,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2334 transitions. [2023-11-29 04:35:44,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:44,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2334 transitions. [2023-11-29 04:35:44,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 111.14285714285714) internal successors, (2334), 21 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:44,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:44,041 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:44,041 INFO L175 Difference]: Start difference. First operand has 148 places, 153 transitions, 464 flow. Second operand 21 states and 2334 transitions. [2023-11-29 04:35:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 171 transitions, 634 flow [2023-11-29 04:35:44,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:35:44,049 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 594 flow [2023-11-29 04:35:44,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=594, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2023-11-29 04:35:44,050 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 48 predicate places. [2023-11-29 04:35:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 594 flow [2023-11-29 04:35:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:44,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:44,052 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:44,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:35:44,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:44,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:44,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -550044045, now seen corresponding path program 2 times [2023-11-29 04:35:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129170041] [2023-11-29 04:35:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:44,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:44,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:44,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129170041] [2023-11-29 04:35:44,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129170041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716220145] [2023-11-29 04:35:44,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:44,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:44,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:44,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:35:44,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:44,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:44,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:35:44,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:44,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:35:44,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 04:35:44,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:35:44,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 04:35:44,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:35:44,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-29 04:35:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 04:35:44,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716220145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:44,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2023-11-29 04:35:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009806378] [2023-11-29 04:35:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:35:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:35:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:35:45,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 128 [2023-11-29 04:35:45,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 166 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:45,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:45,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 128 [2023-11-29 04:35:45,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:46,325 INFO L124 PetriNetUnfolderBase]: 1037/4006 cut-off events. [2023-11-29 04:35:46,325 INFO L125 PetriNetUnfolderBase]: For 725/801 co-relation queries the response was YES. [2023-11-29 04:35:46,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7259 conditions, 4006 events. 1037/4006 cut-off events. For 725/801 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 32938 event pairs, 373 based on Foata normal form. 37/3824 useless extension candidates. Maximal degree in co-relation 7121. Up to 1106 conditions per place. [2023-11-29 04:35:46,357 INFO L140 encePairwiseOnDemand]: 109/128 looper letters, 151 selfloop transitions, 33 changer transitions 0/297 dead transitions. [2023-11-29 04:35:46,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 297 transitions, 1348 flow [2023-11-29 04:35:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:35:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:35:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1036 transitions. [2023-11-29 04:35:46,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.809375 [2023-11-29 04:35:46,362 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1036 transitions. [2023-11-29 04:35:46,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1036 transitions. [2023-11-29 04:35:46,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:46,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1036 transitions. [2023-11-29 04:35:46,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.6) internal successors, (1036), 10 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:46,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:46,370 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:46,370 INFO L175 Difference]: Start difference. First operand has 173 places, 166 transitions, 594 flow. Second operand 10 states and 1036 transitions. [2023-11-29 04:35:46,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 297 transitions, 1348 flow [2023-11-29 04:35:46,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 297 transitions, 1324 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 04:35:46,381 INFO L231 Difference]: Finished difference. Result has 183 places, 197 transitions, 860 flow [2023-11-29 04:35:46,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=860, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2023-11-29 04:35:46,382 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 58 predicate places. [2023-11-29 04:35:46,382 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 860 flow [2023-11-29 04:35:46,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:46,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:46,383 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:46,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:35:46,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:35:46,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:46,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1701364689, now seen corresponding path program 1 times [2023-11-29 04:35:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124109338] [2023-11-29 04:35:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:46,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:46,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124109338] [2023-11-29 04:35:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124109338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:46,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121987555] [2023-11-29 04:35:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:46,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:46,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:46,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:46,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:35:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:47,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:35:47,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:47,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121987555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:47,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:47,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 04:35:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677861345] [2023-11-29 04:35:47,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:35:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:35:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:35:47,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 128 [2023-11-29 04:35:47,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 860 flow. Second operand has 23 states, 23 states have (on average 111.08695652173913) internal successors, (2555), 23 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:47,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:47,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 128 [2023-11-29 04:35:47,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:48,117 INFO L124 PetriNetUnfolderBase]: 340/2395 cut-off events. [2023-11-29 04:35:48,117 INFO L125 PetriNetUnfolderBase]: For 1341/1375 co-relation queries the response was YES. [2023-11-29 04:35:48,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 2395 events. 340/2395 cut-off events. For 1341/1375 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17911 event pairs, 101 based on Foata normal form. 3/2309 useless extension candidates. Maximal degree in co-relation 4508. Up to 316 conditions per place. [2023-11-29 04:35:48,138 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 23 selfloop transitions, 30 changer transitions 0/214 dead transitions. [2023-11-29 04:35:48,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 214 transitions, 1088 flow [2023-11-29 04:35:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:35:48,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:35:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3326 transitions. [2023-11-29 04:35:48,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8661458333333333 [2023-11-29 04:35:48,148 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3326 transitions. [2023-11-29 04:35:48,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3326 transitions. [2023-11-29 04:35:48,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:48,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3326 transitions. [2023-11-29 04:35:48,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 110.86666666666666) internal successors, (3326), 30 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:48,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:48,171 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:48,172 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 860 flow. Second operand 30 states and 3326 transitions. [2023-11-29 04:35:48,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 214 transitions, 1088 flow [2023-11-29 04:35:48,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 214 transitions, 1084 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:35:48,184 INFO L231 Difference]: Finished difference. Result has 214 places, 207 transitions, 1008 flow [2023-11-29 04:35:48,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1008, PETRI_PLACES=214, PETRI_TRANSITIONS=207} [2023-11-29 04:35:48,185 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 89 predicate places. [2023-11-29 04:35:48,186 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 207 transitions, 1008 flow [2023-11-29 04:35:48,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 111.08695652173913) internal successors, (2555), 23 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:48,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:48,187 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:48,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:35:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:48,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:48,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash 770127828, now seen corresponding path program 2 times [2023-11-29 04:35:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206457703] [2023-11-29 04:35:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:35:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206457703] [2023-11-29 04:35:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206457703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:48,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:35:48,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:35:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407846139] [2023-11-29 04:35:48,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:48,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:35:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:35:48,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:35:49,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 128 [2023-11-29 04:35:49,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 207 transitions, 1008 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:49,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:49,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 128 [2023-11-29 04:35:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:50,106 INFO L124 PetriNetUnfolderBase]: 1567/5454 cut-off events. [2023-11-29 04:35:50,106 INFO L125 PetriNetUnfolderBase]: For 4253/4400 co-relation queries the response was YES. [2023-11-29 04:35:50,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13145 conditions, 5454 events. 1567/5454 cut-off events. For 4253/4400 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 44615 event pairs, 650 based on Foata normal form. 33/5244 useless extension candidates. Maximal degree in co-relation 12924. Up to 2690 conditions per place. [2023-11-29 04:35:50,150 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 87 selfloop transitions, 57 changer transitions 0/266 dead transitions. [2023-11-29 04:35:50,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 266 transitions, 1574 flow [2023-11-29 04:35:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:35:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:35:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-11-29 04:35:50,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7825520833333334 [2023-11-29 04:35:50,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-11-29 04:35:50,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-11-29 04:35:50,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:50,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-11-29 04:35:50,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:50,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:50,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:50,157 INFO L175 Difference]: Start difference. First operand has 214 places, 207 transitions, 1008 flow. Second operand 6 states and 601 transitions. [2023-11-29 04:35:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 266 transitions, 1574 flow [2023-11-29 04:35:50,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 266 transitions, 1528 flow, removed 5 selfloop flow, removed 18 redundant places. [2023-11-29 04:35:50,175 INFO L231 Difference]: Finished difference. Result has 206 places, 258 transitions, 1496 flow [2023-11-29 04:35:50,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1496, PETRI_PLACES=206, PETRI_TRANSITIONS=258} [2023-11-29 04:35:50,177 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 81 predicate places. [2023-11-29 04:35:50,177 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 258 transitions, 1496 flow [2023-11-29 04:35:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:50,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:50,178 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:35:50,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:50,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 532400891, now seen corresponding path program 1 times [2023-11-29 04:35:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:50,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500380719] [2023-11-29 04:35:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:35:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500380719] [2023-11-29 04:35:50,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500380719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:50,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:35:50,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:35:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657275457] [2023-11-29 04:35:50,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:50,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:35:50,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:35:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:35:50,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 128 [2023-11-29 04:35:50,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 258 transitions, 1496 flow. Second operand has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:50,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:50,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 128 [2023-11-29 04:35:50,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:52,246 INFO L124 PetriNetUnfolderBase]: 2306/7573 cut-off events. [2023-11-29 04:35:52,246 INFO L125 PetriNetUnfolderBase]: For 14578/14768 co-relation queries the response was YES. [2023-11-29 04:35:52,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21563 conditions, 7573 events. 2306/7573 cut-off events. For 14578/14768 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 64348 event pairs, 730 based on Foata normal form. 39/7358 useless extension candidates. Maximal degree in co-relation 21359. Up to 3780 conditions per place. [2023-11-29 04:35:52,299 INFO L140 encePairwiseOnDemand]: 105/128 looper letters, 134 selfloop transitions, 103 changer transitions 0/359 dead transitions. [2023-11-29 04:35:52,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 359 transitions, 2510 flow [2023-11-29 04:35:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:35:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:35:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-11-29 04:35:52,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8346354166666666 [2023-11-29 04:35:52,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-11-29 04:35:52,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-11-29 04:35:52,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:52,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-11-29 04:35:52,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:52,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:52,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:52,309 INFO L175 Difference]: Start difference. First operand has 206 places, 258 transitions, 1496 flow. Second operand 6 states and 641 transitions. [2023-11-29 04:35:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 359 transitions, 2510 flow [2023-11-29 04:35:52,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 359 transitions, 2410 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-11-29 04:35:52,347 INFO L231 Difference]: Finished difference. Result has 216 places, 343 transitions, 2386 flow [2023-11-29 04:35:52,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2386, PETRI_PLACES=216, PETRI_TRANSITIONS=343} [2023-11-29 04:35:52,348 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 91 predicate places. [2023-11-29 04:35:52,348 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 343 transitions, 2386 flow [2023-11-29 04:35:52,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:52,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:52,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:35:52,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:52,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:52,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2058016118, now seen corresponding path program 1 times [2023-11-29 04:35:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182746495] [2023-11-29 04:35:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:52,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:35:53,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182746495] [2023-11-29 04:35:53,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182746495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26342786] [2023-11-29 04:35:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:53,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:53,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:53,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:53,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:35:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:53,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:35:53,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:53,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:35:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:35:53,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26342786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:53,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:53,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:35:53,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660504961] [2023-11-29 04:35:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:53,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:35:53,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:35:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:35:54,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:35:54,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 343 transitions, 2386 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:54,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:35:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:55,958 INFO L124 PetriNetUnfolderBase]: 1867/7419 cut-off events. [2023-11-29 04:35:55,958 INFO L125 PetriNetUnfolderBase]: For 14549/14825 co-relation queries the response was YES. [2023-11-29 04:35:55,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21232 conditions, 7419 events. 1867/7419 cut-off events. For 14549/14825 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 67365 event pairs, 312 based on Foata normal form. 44/7335 useless extension candidates. Maximal degree in co-relation 21011. Up to 1141 conditions per place. [2023-11-29 04:35:56,018 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 97 selfloop transitions, 16 changer transitions 0/421 dead transitions. [2023-11-29 04:35:56,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 421 transitions, 2904 flow [2023-11-29 04:35:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:35:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:35:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1049 transitions. [2023-11-29 04:35:56,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.81953125 [2023-11-29 04:35:56,023 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1049 transitions. [2023-11-29 04:35:56,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1049 transitions. [2023-11-29 04:35:56,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:56,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1049 transitions. [2023-11-29 04:35:56,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.9) internal successors, (1049), 10 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:56,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:56,032 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:56,032 INFO L175 Difference]: Start difference. First operand has 216 places, 343 transitions, 2386 flow. Second operand 10 states and 1049 transitions. [2023-11-29 04:35:56,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 421 transitions, 2904 flow [2023-11-29 04:35:56,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 421 transitions, 2734 flow, removed 85 selfloop flow, removed 0 redundant places. [2023-11-29 04:35:56,127 INFO L231 Difference]: Finished difference. Result has 232 places, 357 transitions, 2338 flow [2023-11-29 04:35:56,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2338, PETRI_PLACES=232, PETRI_TRANSITIONS=357} [2023-11-29 04:35:56,128 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 107 predicate places. [2023-11-29 04:35:56,128 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 357 transitions, 2338 flow [2023-11-29 04:35:56,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:56,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:56,129 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:56,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:35:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:35:56,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:35:56,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1457871628, now seen corresponding path program 2 times [2023-11-29 04:35:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264113907] [2023-11-29 04:35:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:35:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264113907] [2023-11-29 04:35:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264113907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145821266] [2023-11-29 04:35:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:57,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:57,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:35:57,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:57,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:57,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:35:57,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:57,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:35:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:35:57,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145821266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:57,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:35:57,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940298312] [2023-11-29 04:35:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:57,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:35:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:35:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:35:58,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:35:58,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 357 transitions, 2338 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:58,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:58,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:35:58,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:59,817 INFO L124 PetriNetUnfolderBase]: 2246/8466 cut-off events. [2023-11-29 04:35:59,817 INFO L125 PetriNetUnfolderBase]: For 15678/16049 co-relation queries the response was YES. [2023-11-29 04:35:59,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25097 conditions, 8466 events. 2246/8466 cut-off events. For 15678/16049 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 79721 event pairs, 325 based on Foata normal form. 80/8409 useless extension candidates. Maximal degree in co-relation 24867. Up to 1451 conditions per place. [2023-11-29 04:35:59,879 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 122 selfloop transitions, 21 changer transitions 0/451 dead transitions. [2023-11-29 04:35:59,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 451 transitions, 3042 flow [2023-11-29 04:35:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:35:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:35:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1057 transitions. [2023-11-29 04:35:59,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82578125 [2023-11-29 04:35:59,882 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1057 transitions. [2023-11-29 04:35:59,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1057 transitions. [2023-11-29 04:35:59,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:59,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1057 transitions. [2023-11-29 04:35:59,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:59,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:59,888 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:59,888 INFO L175 Difference]: Start difference. First operand has 232 places, 357 transitions, 2338 flow. Second operand 10 states and 1057 transitions. [2023-11-29 04:35:59,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 451 transitions, 3042 flow [2023-11-29 04:35:59,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 451 transitions, 3031 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:35:59,938 INFO L231 Difference]: Finished difference. Result has 244 places, 369 transitions, 2480 flow [2023-11-29 04:35:59,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=244, PETRI_TRANSITIONS=369} [2023-11-29 04:35:59,939 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 119 predicate places. [2023-11-29 04:35:59,940 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 369 transitions, 2480 flow [2023-11-29 04:35:59,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:59,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:59,940 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:59,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:36:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:36:00,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1198228148, now seen corresponding path program 3 times [2023-11-29 04:36:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792926984] [2023-11-29 04:36:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792926984] [2023-11-29 04:36:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792926984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:00,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912581812] [2023-11-29 04:36:00,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:36:00,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:00,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:00,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:36:01,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:36:01,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:01,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:36:01,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:01,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:01,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912581812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:01,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893189535] [2023-11-29 04:36:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:01,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:01,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:01,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:01,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 369 transitions, 2480 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:01,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:01,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:04,043 INFO L124 PetriNetUnfolderBase]: 2548/9715 cut-off events. [2023-11-29 04:36:04,043 INFO L125 PetriNetUnfolderBase]: For 20600/21095 co-relation queries the response was YES. [2023-11-29 04:36:04,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29618 conditions, 9715 events. 2548/9715 cut-off events. For 20600/21095 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 93206 event pairs, 345 based on Foata normal form. 100/9657 useless extension candidates. Maximal degree in co-relation 29382. Up to 1528 conditions per place. [2023-11-29 04:36:04,151 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 122 selfloop transitions, 23 changer transitions 0/453 dead transitions. [2023-11-29 04:36:04,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 453 transitions, 3311 flow [2023-11-29 04:36:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:36:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:36:04,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1055 transitions. [2023-11-29 04:36:04,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82421875 [2023-11-29 04:36:04,154 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1055 transitions. [2023-11-29 04:36:04,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1055 transitions. [2023-11-29 04:36:04,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:04,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1055 transitions. [2023-11-29 04:36:04,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.5) internal successors, (1055), 10 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,160 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,161 INFO L175 Difference]: Start difference. First operand has 244 places, 369 transitions, 2480 flow. Second operand 10 states and 1055 transitions. [2023-11-29 04:36:04,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 453 transitions, 3311 flow [2023-11-29 04:36:04,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 453 transitions, 3245 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:04,248 INFO L231 Difference]: Finished difference. Result has 255 places, 381 transitions, 2646 flow [2023-11-29 04:36:04,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2646, PETRI_PLACES=255, PETRI_TRANSITIONS=381} [2023-11-29 04:36:04,249 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 130 predicate places. [2023-11-29 04:36:04,249 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 381 transitions, 2646 flow [2023-11-29 04:36:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:04,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:04,250 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:04,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 04:36:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:36:04,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:04,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -742618040, now seen corresponding path program 4 times [2023-11-29 04:36:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052543520] [2023-11-29 04:36:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052543520] [2023-11-29 04:36:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052543520] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379643788] [2023-11-29 04:36:05,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:36:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:05,177 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:05,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:36:05,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:36:05,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:05,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:36:05,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:05,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:05,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379643788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2023-11-29 04:36:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982343086] [2023-11-29 04:36:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:36:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:05,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:36:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:36:05,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:05,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 381 transitions, 2646 flow. Second operand has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:05,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:05,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:05,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:08,339 INFO L124 PetriNetUnfolderBase]: 3093/11561 cut-off events. [2023-11-29 04:36:08,339 INFO L125 PetriNetUnfolderBase]: For 26985/27556 co-relation queries the response was YES. [2023-11-29 04:36:08,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36656 conditions, 11561 events. 3093/11561 cut-off events. For 26985/27556 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 113264 event pairs, 346 based on Foata normal form. 120/11533 useless extension candidates. Maximal degree in co-relation 36414. Up to 1973 conditions per place. [2023-11-29 04:36:08,459 INFO L140 encePairwiseOnDemand]: 114/128 looper letters, 121 selfloop transitions, 74 changer transitions 0/503 dead transitions. [2023-11-29 04:36:08,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 503 transitions, 3845 flow [2023-11-29 04:36:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:36:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:36:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1568 transitions. [2023-11-29 04:36:08,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2023-11-29 04:36:08,461 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1568 transitions. [2023-11-29 04:36:08,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1568 transitions. [2023-11-29 04:36:08,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:08,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1568 transitions. [2023-11-29 04:36:08,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 104.53333333333333) internal successors, (1568), 15 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,467 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,467 INFO L175 Difference]: Start difference. First operand has 255 places, 381 transitions, 2646 flow. Second operand 15 states and 1568 transitions. [2023-11-29 04:36:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 503 transitions, 3845 flow [2023-11-29 04:36:08,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 503 transitions, 3764 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-29 04:36:08,554 INFO L231 Difference]: Finished difference. Result has 274 places, 424 transitions, 3266 flow [2023-11-29 04:36:08,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3266, PETRI_PLACES=274, PETRI_TRANSITIONS=424} [2023-11-29 04:36:08,555 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 149 predicate places. [2023-11-29 04:36:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 424 transitions, 3266 flow [2023-11-29 04:36:08,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:08,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:08,555 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:08,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:36:08,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:36:08,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:08,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1155070748, now seen corresponding path program 5 times [2023-11-29 04:36:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241868383] [2023-11-29 04:36:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241868383] [2023-11-29 04:36:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241868383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:09,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712607336] [2023-11-29 04:36:09,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:36:09,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:09,325 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:09,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:36:09,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 04:36:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:09,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:09,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:09,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:09,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712607336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:09,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732413839] [2023-11-29 04:36:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:09,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:09,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:10,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:10,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 424 transitions, 3266 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:10,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:10,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:13,148 INFO L124 PetriNetUnfolderBase]: 3669/13446 cut-off events. [2023-11-29 04:36:13,148 INFO L125 PetriNetUnfolderBase]: For 37743/38552 co-relation queries the response was YES. [2023-11-29 04:36:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44157 conditions, 13446 events. 3669/13446 cut-off events. For 37743/38552 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 135795 event pairs, 383 based on Foata normal form. 153/13417 useless extension candidates. Maximal degree in co-relation 43907. Up to 2231 conditions per place. [2023-11-29 04:36:13,241 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 180 selfloop transitions, 49 changer transitions 0/537 dead transitions. [2023-11-29 04:36:13,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 537 transitions, 4777 flow [2023-11-29 04:36:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1367 transitions. [2023-11-29 04:36:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215144230769231 [2023-11-29 04:36:13,243 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1367 transitions. [2023-11-29 04:36:13,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1367 transitions. [2023-11-29 04:36:13,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:13,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1367 transitions. [2023-11-29 04:36:13,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.15384615384616) internal successors, (1367), 13 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:13,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:13,247 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:13,247 INFO L175 Difference]: Start difference. First operand has 274 places, 424 transitions, 3266 flow. Second operand 13 states and 1367 transitions. [2023-11-29 04:36:13,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 537 transitions, 4777 flow [2023-11-29 04:36:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 537 transitions, 4550 flow, removed 71 selfloop flow, removed 2 redundant places. [2023-11-29 04:36:13,355 INFO L231 Difference]: Finished difference. Result has 293 places, 458 transitions, 3757 flow [2023-11-29 04:36:13,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3757, PETRI_PLACES=293, PETRI_TRANSITIONS=458} [2023-11-29 04:36:13,356 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 168 predicate places. [2023-11-29 04:36:13,356 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 458 transitions, 3757 flow [2023-11-29 04:36:13,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:13,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:13,357 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:13,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:36:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:36:13,557 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:13,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1598129668, now seen corresponding path program 6 times [2023-11-29 04:36:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956819429] [2023-11-29 04:36:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956819429] [2023-11-29 04:36:14,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956819429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402595875] [2023-11-29 04:36:14,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:36:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:14,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:14,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:36:14,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 04:36:14,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:14,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:14,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:14,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:14,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402595875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:14,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:14,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:36:14,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454523647] [2023-11-29 04:36:14,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:14,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:14,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:36:15,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:15,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 458 transitions, 3757 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:15,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:15,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:15,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:18,176 INFO L124 PetriNetUnfolderBase]: 4010/14590 cut-off events. [2023-11-29 04:36:18,176 INFO L125 PetriNetUnfolderBase]: For 44615/45471 co-relation queries the response was YES. [2023-11-29 04:36:18,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49282 conditions, 14590 events. 4010/14590 cut-off events. For 44615/45471 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 149474 event pairs, 424 based on Foata normal form. 145/14549 useless extension candidates. Maximal degree in co-relation 49100. Up to 2530 conditions per place. [2023-11-29 04:36:18,323 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 188 selfloop transitions, 45 changer transitions 0/541 dead transitions. [2023-11-29 04:36:18,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 541 transitions, 4964 flow [2023-11-29 04:36:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:36:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:36:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 04:36:18,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 04:36:18,325 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 04:36:18,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 04:36:18,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:18,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 04:36:18,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,329 INFO L175 Difference]: Start difference. First operand has 293 places, 458 transitions, 3757 flow. Second operand 10 states and 1062 transitions. [2023-11-29 04:36:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 541 transitions, 4964 flow [2023-11-29 04:36:18,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 541 transitions, 4864 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:18,518 INFO L231 Difference]: Finished difference. Result has 305 places, 476 transitions, 4086 flow [2023-11-29 04:36:18,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3686, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4086, PETRI_PLACES=305, PETRI_TRANSITIONS=476} [2023-11-29 04:36:18,519 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 180 predicate places. [2023-11-29 04:36:18,519 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 476 transitions, 4086 flow [2023-11-29 04:36:18,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:18,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:18,520 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:18,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:36:18,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:18,720 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:18,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:18,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1379504676, now seen corresponding path program 7 times [2023-11-29 04:36:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407536707] [2023-11-29 04:36:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:18,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:19,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407536707] [2023-11-29 04:36:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407536707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097564122] [2023-11-29 04:36:19,284 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:36:19,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:19,285 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:19,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:36:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:19,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:19,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:19,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:19,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097564122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169434326] [2023-11-29 04:36:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 476 transitions, 4086 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:24,052 INFO L124 PetriNetUnfolderBase]: 4588/16625 cut-off events. [2023-11-29 04:36:24,053 INFO L125 PetriNetUnfolderBase]: For 57211/58281 co-relation queries the response was YES. [2023-11-29 04:36:24,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57349 conditions, 16625 events. 4588/16625 cut-off events. For 57211/58281 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 175119 event pairs, 491 based on Foata normal form. 173/16594 useless extension candidates. Maximal degree in co-relation 57186. Up to 2790 conditions per place. [2023-11-29 04:36:24,215 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 215 selfloop transitions, 56 changer transitions 0/579 dead transitions. [2023-11-29 04:36:24,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 579 transitions, 5797 flow [2023-11-29 04:36:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1369 transitions. [2023-11-29 04:36:24,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8227163461538461 [2023-11-29 04:36:24,218 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1369 transitions. [2023-11-29 04:36:24,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1369 transitions. [2023-11-29 04:36:24,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:24,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1369 transitions. [2023-11-29 04:36:24,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:24,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:24,222 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:24,222 INFO L175 Difference]: Start difference. First operand has 305 places, 476 transitions, 4086 flow. Second operand 13 states and 1369 transitions. [2023-11-29 04:36:24,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 579 transitions, 5797 flow [2023-11-29 04:36:24,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 579 transitions, 5664 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-11-29 04:36:24,460 INFO L231 Difference]: Finished difference. Result has 324 places, 514 transitions, 4769 flow [2023-11-29 04:36:24,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3982, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4769, PETRI_PLACES=324, PETRI_TRANSITIONS=514} [2023-11-29 04:36:24,461 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 199 predicate places. [2023-11-29 04:36:24,461 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 514 transitions, 4769 flow [2023-11-29 04:36:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:24,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:24,461 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:24,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:36:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:36:24,662 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:24,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1776637698, now seen corresponding path program 8 times [2023-11-29 04:36:24,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123611039] [2023-11-29 04:36:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:25,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123611039] [2023-11-29 04:36:25,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123611039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:25,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867525523] [2023-11-29 04:36:25,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:36:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:25,399 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:25,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:36:25,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:36:25,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:25,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:25,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:25,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:25,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:25,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867525523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:25,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:36:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585338089] [2023-11-29 04:36:25,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:36:26,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:26,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 514 transitions, 4769 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:26,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:26,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:26,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:30,721 INFO L124 PetriNetUnfolderBase]: 5440/19352 cut-off events. [2023-11-29 04:36:30,721 INFO L125 PetriNetUnfolderBase]: For 75761/77047 co-relation queries the response was YES. [2023-11-29 04:36:30,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68897 conditions, 19352 events. 5440/19352 cut-off events. For 75761/77047 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 210087 event pairs, 521 based on Foata normal form. 213/19341 useless extension candidates. Maximal degree in co-relation 68719. Up to 3405 conditions per place. [2023-11-29 04:36:30,942 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 250 selfloop transitions, 65 changer transitions 0/623 dead transitions. [2023-11-29 04:36:30,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 623 transitions, 6759 flow [2023-11-29 04:36:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1369 transitions. [2023-11-29 04:36:30,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8227163461538461 [2023-11-29 04:36:30,945 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1369 transitions. [2023-11-29 04:36:30,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1369 transitions. [2023-11-29 04:36:30,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:30,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1369 transitions. [2023-11-29 04:36:30,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.3076923076923) internal successors, (1369), 13 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:30,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:30,950 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:30,950 INFO L175 Difference]: Start difference. First operand has 324 places, 514 transitions, 4769 flow. Second operand 13 states and 1369 transitions. [2023-11-29 04:36:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 623 transitions, 6759 flow [2023-11-29 04:36:31,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 623 transitions, 6602 flow, removed 78 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:31,282 INFO L231 Difference]: Finished difference. Result has 345 places, 549 transitions, 5465 flow [2023-11-29 04:36:31,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=4612, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5465, PETRI_PLACES=345, PETRI_TRANSITIONS=549} [2023-11-29 04:36:31,283 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 220 predicate places. [2023-11-29 04:36:31,283 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 549 transitions, 5465 flow [2023-11-29 04:36:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:31,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:31,284 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:31,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:36:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:36:31,484 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:31,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash -360987932, now seen corresponding path program 9 times [2023-11-29 04:36:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024964089] [2023-11-29 04:36:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024964089] [2023-11-29 04:36:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024964089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296873307] [2023-11-29 04:36:31,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:36:31,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:31,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:31,978 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:31,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:36:32,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:36:32,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:32,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:32,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:32,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:32,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296873307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:32,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105913686] [2023-11-29 04:36:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:32,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:33,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:33,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 549 transitions, 5465 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:33,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:33,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:33,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:37,596 INFO L124 PetriNetUnfolderBase]: 5165/18491 cut-off events. [2023-11-29 04:36:37,596 INFO L125 PetriNetUnfolderBase]: For 81722/83094 co-relation queries the response was YES. [2023-11-29 04:36:37,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66762 conditions, 18491 events. 5165/18491 cut-off events. For 81722/83094 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 198995 event pairs, 472 based on Foata normal form. 385/18673 useless extension candidates. Maximal degree in co-relation 66581. Up to 3141 conditions per place. [2023-11-29 04:36:37,837 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 204 selfloop transitions, 133 changer transitions 0/645 dead transitions. [2023-11-29 04:36:37,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 645 transitions, 7130 flow [2023-11-29 04:36:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1356 transitions. [2023-11-29 04:36:37,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8149038461538461 [2023-11-29 04:36:37,840 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1356 transitions. [2023-11-29 04:36:37,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1356 transitions. [2023-11-29 04:36:37,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:37,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1356 transitions. [2023-11-29 04:36:37,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.3076923076923) internal successors, (1356), 13 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:37,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:37,846 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:37,846 INFO L175 Difference]: Start difference. First operand has 345 places, 549 transitions, 5465 flow. Second operand 13 states and 1356 transitions. [2023-11-29 04:36:37,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 645 transitions, 7130 flow [2023-11-29 04:36:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 645 transitions, 6947 flow, removed 91 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:38,356 INFO L231 Difference]: Finished difference. Result has 361 places, 559 transitions, 5776 flow [2023-11-29 04:36:38,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5776, PETRI_PLACES=361, PETRI_TRANSITIONS=559} [2023-11-29 04:36:38,356 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 236 predicate places. [2023-11-29 04:36:38,357 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 559 transitions, 5776 flow [2023-11-29 04:36:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:38,357 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:38,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:36:38,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:36:38,557 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:38,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1241935860, now seen corresponding path program 10 times [2023-11-29 04:36:38,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694922536] [2023-11-29 04:36:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:38,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694922536] [2023-11-29 04:36:38,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694922536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794581402] [2023-11-29 04:36:38,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:36:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:38,936 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:38,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:36:39,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:36:39,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:39,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 04:36:39,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:39,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:36:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 04:36:39,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:39,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 04:36:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794581402] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:36:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 18] total 29 [2023-11-29 04:36:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942224652] [2023-11-29 04:36:39,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:39,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:36:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:36:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:36:40,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 128 [2023-11-29 04:36:40,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 559 transitions, 5776 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:40,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:40,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 128 [2023-11-29 04:36:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:44,864 INFO L124 PetriNetUnfolderBase]: 5127/18456 cut-off events. [2023-11-29 04:36:44,864 INFO L125 PetriNetUnfolderBase]: For 87275/88553 co-relation queries the response was YES. [2023-11-29 04:36:45,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67491 conditions, 18456 events. 5127/18456 cut-off events. For 87275/88553 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 198754 event pairs, 464 based on Foata normal form. 354/18609 useless extension candidates. Maximal degree in co-relation 67306. Up to 3150 conditions per place. [2023-11-29 04:36:45,095 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 193 selfloop transitions, 151 changer transitions 0/653 dead transitions. [2023-11-29 04:36:45,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 653 transitions, 7498 flow [2023-11-29 04:36:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:36:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:36:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1481 transitions. [2023-11-29 04:36:45,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8264508928571429 [2023-11-29 04:36:45,097 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1481 transitions. [2023-11-29 04:36:45,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1481 transitions. [2023-11-29 04:36:45,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:45,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1481 transitions. [2023-11-29 04:36:45,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.78571428571429) internal successors, (1481), 14 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:45,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:45,101 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:45,101 INFO L175 Difference]: Start difference. First operand has 361 places, 559 transitions, 5776 flow. Second operand 14 states and 1481 transitions. [2023-11-29 04:36:45,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 653 transitions, 7498 flow [2023-11-29 04:36:45,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 653 transitions, 7177 flow, removed 68 selfloop flow, removed 8 redundant places. [2023-11-29 04:36:45,425 INFO L231 Difference]: Finished difference. Result has 373 places, 575 transitions, 6231 flow [2023-11-29 04:36:45,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6231, PETRI_PLACES=373, PETRI_TRANSITIONS=575} [2023-11-29 04:36:45,425 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 248 predicate places. [2023-11-29 04:36:45,426 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 575 transitions, 6231 flow [2023-11-29 04:36:45,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:45,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:45,426 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:45,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:36:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:45,627 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:45,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash 456710164, now seen corresponding path program 11 times [2023-11-29 04:36:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:45,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240076404] [2023-11-29 04:36:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240076404] [2023-11-29 04:36:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240076404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:46,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127436793] [2023-11-29 04:36:46,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:36:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:46,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:46,102 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:46,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:36:46,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 04:36:46,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:46,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:46,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:46,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:46,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127436793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:46,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386858919] [2023-11-29 04:36:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:47,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:47,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 575 transitions, 6231 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:47,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:47,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:47,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:52,126 INFO L124 PetriNetUnfolderBase]: 5397/19274 cut-off events. [2023-11-29 04:36:52,126 INFO L125 PetriNetUnfolderBase]: For 94431/95748 co-relation queries the response was YES. [2023-11-29 04:36:52,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71170 conditions, 19274 events. 5397/19274 cut-off events. For 94431/95748 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 209184 event pairs, 515 based on Foata normal form. 256/19304 useless extension candidates. Maximal degree in co-relation 70980. Up to 3319 conditions per place. [2023-11-29 04:36:52,322 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 273 selfloop transitions, 73 changer transitions 0/654 dead transitions. [2023-11-29 04:36:52,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 654 transitions, 7898 flow [2023-11-29 04:36:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1362 transitions. [2023-11-29 04:36:52,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8185096153846154 [2023-11-29 04:36:52,324 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1362 transitions. [2023-11-29 04:36:52,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1362 transitions. [2023-11-29 04:36:52,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:52,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1362 transitions. [2023-11-29 04:36:52,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.76923076923077) internal successors, (1362), 13 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:52,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:52,328 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:52,328 INFO L175 Difference]: Start difference. First operand has 373 places, 575 transitions, 6231 flow. Second operand 13 states and 1362 transitions. [2023-11-29 04:36:52,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 654 transitions, 7898 flow [2023-11-29 04:36:52,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 654 transitions, 7639 flow, removed 116 selfloop flow, removed 1 redundant places. [2023-11-29 04:36:52,684 INFO L231 Difference]: Finished difference. Result has 390 places, 591 transitions, 6553 flow [2023-11-29 04:36:52,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6553, PETRI_PLACES=390, PETRI_TRANSITIONS=591} [2023-11-29 04:36:52,684 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 265 predicate places. [2023-11-29 04:36:52,685 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 591 transitions, 6553 flow [2023-11-29 04:36:52,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:52,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:36:52,685 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:52,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:36:52,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:52,885 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:36:52,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -891759832, now seen corresponding path program 12 times [2023-11-29 04:36:52,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:36:52,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303849771] [2023-11-29 04:36:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:36:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:36:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:36:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303849771] [2023-11-29 04:36:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303849771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848679409] [2023-11-29 04:36:53,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:36:53,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:36:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:36:53,229 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:36:53,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:36:53,381 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 04:36:53,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:36:53,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:36:53,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:53,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:36:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:36:53,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:36:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848679409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:36:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:36:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:36:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710544667] [2023-11-29 04:36:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:36:53,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:36:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:36:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:36:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:36:54,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:36:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 591 transitions, 6553 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:36:54,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:36:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:36:59,435 INFO L124 PetriNetUnfolderBase]: 5352/19081 cut-off events. [2023-11-29 04:36:59,435 INFO L125 PetriNetUnfolderBase]: For 92072/93474 co-relation queries the response was YES. [2023-11-29 04:36:59,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70182 conditions, 19081 events. 5352/19081 cut-off events. For 92072/93474 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 206399 event pairs, 520 based on Foata normal form. 293/19146 useless extension candidates. Maximal degree in co-relation 69984. Up to 3310 conditions per place. [2023-11-29 04:36:59,741 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 264 selfloop transitions, 82 changer transitions 0/654 dead transitions. [2023-11-29 04:36:59,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 654 transitions, 7923 flow [2023-11-29 04:36:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:36:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:36:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1355 transitions. [2023-11-29 04:36:59,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8143028846153846 [2023-11-29 04:36:59,745 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1355 transitions. [2023-11-29 04:36:59,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1355 transitions. [2023-11-29 04:36:59,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:36:59,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1355 transitions. [2023-11-29 04:36:59,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.23076923076923) internal successors, (1355), 13 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:59,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:59,750 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:36:59,751 INFO L175 Difference]: Start difference. First operand has 390 places, 591 transitions, 6553 flow. Second operand 13 states and 1355 transitions. [2023-11-29 04:36:59,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 654 transitions, 7923 flow [2023-11-29 04:37:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 654 transitions, 7780 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-11-29 04:37:00,209 INFO L231 Difference]: Finished difference. Result has 403 places, 599 transitions, 6787 flow [2023-11-29 04:37:00,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6342, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6787, PETRI_PLACES=403, PETRI_TRANSITIONS=599} [2023-11-29 04:37:00,210 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 278 predicate places. [2023-11-29 04:37:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 599 transitions, 6787 flow [2023-11-29 04:37:00,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:00,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:00,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:00,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:37:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 04:37:00,411 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:00,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1956473390, now seen corresponding path program 13 times [2023-11-29 04:37:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811367796] [2023-11-29 04:37:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:00,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:00,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:00,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811367796] [2023-11-29 04:37:00,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811367796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:00,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263932441] [2023-11-29 04:37:00,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:37:00,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:00,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:00,900 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:00,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:37:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:01,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:37:01,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:01,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:01,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263932441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:01,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:01,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:37:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324009386] [2023-11-29 04:37:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:01,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:37:01,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:37:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:37:01,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:37:01,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 599 transitions, 6787 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:01,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:01,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:37:01,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:06,595 INFO L124 PetriNetUnfolderBase]: 5363/19223 cut-off events. [2023-11-29 04:37:06,595 INFO L125 PetriNetUnfolderBase]: For 89897/91276 co-relation queries the response was YES. [2023-11-29 04:37:06,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70452 conditions, 19223 events. 5363/19223 cut-off events. For 89897/91276 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 207989 event pairs, 552 based on Foata normal form. 283/19281 useless extension candidates. Maximal degree in co-relation 70250. Up to 3334 conditions per place. [2023-11-29 04:37:06,859 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 250 selfloop transitions, 100 changer transitions 0/658 dead transitions. [2023-11-29 04:37:06,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 658 transitions, 8238 flow [2023-11-29 04:37:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:37:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:37:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1054 transitions. [2023-11-29 04:37:06,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8234375 [2023-11-29 04:37:06,860 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1054 transitions. [2023-11-29 04:37:06,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1054 transitions. [2023-11-29 04:37:06,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:06,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1054 transitions. [2023-11-29 04:37:06,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.4) internal successors, (1054), 10 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:06,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:06,863 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:06,863 INFO L175 Difference]: Start difference. First operand has 403 places, 599 transitions, 6787 flow. Second operand 10 states and 1054 transitions. [2023-11-29 04:37:06,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 658 transitions, 8238 flow [2023-11-29 04:37:07,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 658 transitions, 8133 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-29 04:37:07,236 INFO L231 Difference]: Finished difference. Result has 414 places, 616 transitions, 7414 flow [2023-11-29 04:37:07,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7414, PETRI_PLACES=414, PETRI_TRANSITIONS=616} [2023-11-29 04:37:07,237 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 289 predicate places. [2023-11-29 04:37:07,237 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 616 transitions, 7414 flow [2023-11-29 04:37:07,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:07,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:07,237 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:07,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:37:07,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 04:37:07,438 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:07,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1588006044, now seen corresponding path program 14 times [2023-11-29 04:37:07,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:07,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644406727] [2023-11-29 04:37:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:07,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644406727] [2023-11-29 04:37:08,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644406727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789472679] [2023-11-29 04:37:08,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:37:08,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:08,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:08,051 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:08,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:37:08,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:37:08,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:08,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:37:08,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:08,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:08,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789472679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:08,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:08,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:37:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569834951] [2023-11-29 04:37:08,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:37:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:37:08,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:37:08,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:37:08,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 616 transitions, 7414 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:08,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:08,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:37:08,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:14,904 INFO L124 PetriNetUnfolderBase]: 6332/22222 cut-off events. [2023-11-29 04:37:14,904 INFO L125 PetriNetUnfolderBase]: For 113062/114722 co-relation queries the response was YES. [2023-11-29 04:37:15,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82250 conditions, 22222 events. 6332/22222 cut-off events. For 113062/114722 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 247144 event pairs, 602 based on Foata normal form. 272/22231 useless extension candidates. Maximal degree in co-relation 82036. Up to 3907 conditions per place. [2023-11-29 04:37:15,226 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 330 selfloop transitions, 66 changer transitions 0/704 dead transitions. [2023-11-29 04:37:15,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 704 transitions, 9549 flow [2023-11-29 04:37:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:37:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:37:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1372 transitions. [2023-11-29 04:37:15,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245192307692307 [2023-11-29 04:37:15,228 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1372 transitions. [2023-11-29 04:37:15,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1372 transitions. [2023-11-29 04:37:15,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:15,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1372 transitions. [2023-11-29 04:37:15,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.53846153846153) internal successors, (1372), 13 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:15,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:15,233 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:15,233 INFO L175 Difference]: Start difference. First operand has 414 places, 616 transitions, 7414 flow. Second operand 13 states and 1372 transitions. [2023-11-29 04:37:15,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 704 transitions, 9549 flow [2023-11-29 04:37:15,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 704 transitions, 9264 flow, removed 142 selfloop flow, removed 1 redundant places. [2023-11-29 04:37:15,706 INFO L231 Difference]: Finished difference. Result has 433 places, 643 transitions, 8002 flow [2023-11-29 04:37:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=7283, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8002, PETRI_PLACES=433, PETRI_TRANSITIONS=643} [2023-11-29 04:37:15,707 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 308 predicate places. [2023-11-29 04:37:15,707 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 643 transitions, 8002 flow [2023-11-29 04:37:15,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:15,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:15,707 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:15,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:37:15,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:15,908 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:15,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2099739660, now seen corresponding path program 15 times [2023-11-29 04:37:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982076537] [2023-11-29 04:37:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:16,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982076537] [2023-11-29 04:37:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982076537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496431563] [2023-11-29 04:37:16,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:37:16,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:16,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:16,428 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:37:16,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:37:16,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:16,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:37:16,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:16,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:16,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496431563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:16,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:16,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:37:16,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105490208] [2023-11-29 04:37:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:16,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:37:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:37:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:37:17,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:37:17,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 643 transitions, 8002 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:17,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:17,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:37:17,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:23,886 INFO L124 PetriNetUnfolderBase]: 6861/23878 cut-off events. [2023-11-29 04:37:23,886 INFO L125 PetriNetUnfolderBase]: For 120855/122753 co-relation queries the response was YES. [2023-11-29 04:37:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88723 conditions, 23878 events. 6861/23878 cut-off events. For 120855/122753 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 269372 event pairs, 639 based on Foata normal form. 378/23984 useless extension candidates. Maximal degree in co-relation 88501. Up to 4249 conditions per place. [2023-11-29 04:37:24,298 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 295 selfloop transitions, 110 changer transitions 0/713 dead transitions. [2023-11-29 04:37:24,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 713 transitions, 9738 flow [2023-11-29 04:37:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:37:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:37:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1357 transitions. [2023-11-29 04:37:24,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8155048076923077 [2023-11-29 04:37:24,301 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1357 transitions. [2023-11-29 04:37:24,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1357 transitions. [2023-11-29 04:37:24,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:24,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1357 transitions. [2023-11-29 04:37:24,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:24,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:24,306 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:24,306 INFO L175 Difference]: Start difference. First operand has 433 places, 643 transitions, 8002 flow. Second operand 13 states and 1357 transitions. [2023-11-29 04:37:24,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 713 transitions, 9738 flow [2023-11-29 04:37:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 713 transitions, 9546 flow, removed 57 selfloop flow, removed 4 redundant places. [2023-11-29 04:37:24,915 INFO L231 Difference]: Finished difference. Result has 448 places, 663 transitions, 8545 flow [2023-11-29 04:37:24,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=7819, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8545, PETRI_PLACES=448, PETRI_TRANSITIONS=663} [2023-11-29 04:37:24,916 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 323 predicate places. [2023-11-29 04:37:24,916 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 663 transitions, 8545 flow [2023-11-29 04:37:24,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:24,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:24,916 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:24,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:37:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:25,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:25,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash 226822046, now seen corresponding path program 16 times [2023-11-29 04:37:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:25,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360820697] [2023-11-29 04:37:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360820697] [2023-11-29 04:37:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360820697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862110801] [2023-11-29 04:37:25,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:37:25,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:25,473 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:25,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:37:25,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:37:25,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:25,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 04:37:25,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:25,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:25,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:37:25,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 04:37:25,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 04:37:25,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:25,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 04:37:26,007 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:37:26,013 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:37:26,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 04:37:26,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-11-29 04:37:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2023-11-29 04:37:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2023-11-29 04:37:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:37:26,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 78 [2023-11-29 04:37:26,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:37:26,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 04:37:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:26,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862110801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10] total 25 [2023-11-29 04:37:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142579829] [2023-11-29 04:37:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:37:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:37:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:37:28,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 128 [2023-11-29 04:37:28,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 663 transitions, 8545 flow. Second operand has 19 states, 19 states have (on average 71.42105263157895) internal successors, (1357), 19 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:28,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:28,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 128 [2023-11-29 04:37:28,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:41,886 INFO L124 PetriNetUnfolderBase]: 12596/34875 cut-off events. [2023-11-29 04:37:41,886 INFO L125 PetriNetUnfolderBase]: For 256201/257115 co-relation queries the response was YES. [2023-11-29 04:37:42,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157021 conditions, 34875 events. 12596/34875 cut-off events. For 256201/257115 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 368559 event pairs, 3485 based on Foata normal form. 117/34610 useless extension candidates. Maximal degree in co-relation 156688. Up to 12020 conditions per place. [2023-11-29 04:37:42,535 INFO L140 encePairwiseOnDemand]: 97/128 looper letters, 1140 selfloop transitions, 156 changer transitions 0/1413 dead transitions. [2023-11-29 04:37:42,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1413 transitions, 18248 flow [2023-11-29 04:37:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:37:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 04:37:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1678 transitions. [2023-11-29 04:37:42,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6899671052631579 [2023-11-29 04:37:42,537 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1678 transitions. [2023-11-29 04:37:42,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1678 transitions. [2023-11-29 04:37:42,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:42,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1678 transitions. [2023-11-29 04:37:42,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.3157894736842) internal successors, (1678), 19 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:42,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:42,542 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:42,542 INFO L175 Difference]: Start difference. First operand has 448 places, 663 transitions, 8545 flow. Second operand 19 states and 1678 transitions. [2023-11-29 04:37:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1413 transitions, 18248 flow [2023-11-29 04:37:43,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1413 transitions, 18010 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-29 04:37:43,666 INFO L231 Difference]: Finished difference. Result has 475 places, 757 transitions, 10373 flow [2023-11-29 04:37:43,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=8328, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10373, PETRI_PLACES=475, PETRI_TRANSITIONS=757} [2023-11-29 04:37:43,667 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 350 predicate places. [2023-11-29 04:37:43,667 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 757 transitions, 10373 flow [2023-11-29 04:37:43,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 71.42105263157895) internal successors, (1357), 19 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:43,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:43,667 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:43,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:37:43,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:43,868 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:43,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash 477575910, now seen corresponding path program 17 times [2023-11-29 04:37:43,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:43,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822930192] [2023-11-29 04:37:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:44,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822930192] [2023-11-29 04:37:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822930192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127436685] [2023-11-29 04:37:44,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:37:44,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:44,313 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:44,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:37:44,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 04:37:44,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:44,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:37:44,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:44,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:44,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:44,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127436685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:44,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:44,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:37:44,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576869603] [2023-11-29 04:37:44,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:44,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:37:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:37:44,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:37:45,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:37:45,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 757 transitions, 10373 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:45,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:45,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:37:45,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:37:52,701 INFO L124 PetriNetUnfolderBase]: 7183/24889 cut-off events. [2023-11-29 04:37:52,701 INFO L125 PetriNetUnfolderBase]: For 150709/153024 co-relation queries the response was YES. [2023-11-29 04:37:53,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97940 conditions, 24889 events. 7183/24889 cut-off events. For 150709/153024 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 282611 event pairs, 668 based on Foata normal form. 416/25005 useless extension candidates. Maximal degree in co-relation 97695. Up to 4456 conditions per place. [2023-11-29 04:37:53,107 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 353 selfloop transitions, 101 changer transitions 0/826 dead transitions. [2023-11-29 04:37:53,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 826 transitions, 12312 flow [2023-11-29 04:37:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:37:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:37:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1364 transitions. [2023-11-29 04:37:53,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8197115384615384 [2023-11-29 04:37:53,109 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1364 transitions. [2023-11-29 04:37:53,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1364 transitions. [2023-11-29 04:37:53,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:37:53,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1364 transitions. [2023-11-29 04:37:53,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,112 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,112 INFO L175 Difference]: Start difference. First operand has 475 places, 757 transitions, 10373 flow. Second operand 13 states and 1364 transitions. [2023-11-29 04:37:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 826 transitions, 12312 flow [2023-11-29 04:37:53,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 826 transitions, 12168 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-11-29 04:37:53,974 INFO L231 Difference]: Finished difference. Result has 492 places, 780 transitions, 11082 flow [2023-11-29 04:37:53,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10232, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11082, PETRI_PLACES=492, PETRI_TRANSITIONS=780} [2023-11-29 04:37:53,975 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 367 predicate places. [2023-11-29 04:37:53,975 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 780 transitions, 11082 flow [2023-11-29 04:37:53,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:53,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:37:53,976 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:37:53,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:37:54,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 04:37:54,176 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:37:54,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:37:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2094730268, now seen corresponding path program 18 times [2023-11-29 04:37:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:37:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903585765] [2023-11-29 04:37:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:37:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:37:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:37:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:37:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:37:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903585765] [2023-11-29 04:37:54,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903585765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:37:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145776051] [2023-11-29 04:37:54,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:37:54,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:37:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:37:54,791 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:37:54,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:37:54,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 04:37:54,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:37:54,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:37:54,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:37:55,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:37:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:37:55,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:37:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145776051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:37:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:37:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:37:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842961484] [2023-11-29 04:37:55,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:37:55,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:37:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:37:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:37:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:37:55,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:37:55,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 780 transitions, 11082 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:37:55,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:37:55,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:37:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:03,453 INFO L124 PetriNetUnfolderBase]: 7445/25646 cut-off events. [2023-11-29 04:38:03,453 INFO L125 PetriNetUnfolderBase]: For 159005/161602 co-relation queries the response was YES. [2023-11-29 04:38:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101256 conditions, 25646 events. 7445/25646 cut-off events. For 159005/161602 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 293023 event pairs, 683 based on Foata normal form. 417/25744 useless extension candidates. Maximal degree in co-relation 101002. Up to 4610 conditions per place. [2023-11-29 04:38:03,908 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 370 selfloop transitions, 97 changer transitions 0/839 dead transitions. [2023-11-29 04:38:03,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 839 transitions, 12760 flow [2023-11-29 04:38:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:38:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:38:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1367 transitions. [2023-11-29 04:38:03,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215144230769231 [2023-11-29 04:38:03,910 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1367 transitions. [2023-11-29 04:38:03,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1367 transitions. [2023-11-29 04:38:03,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:03,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1367 transitions. [2023-11-29 04:38:03,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.15384615384616) internal successors, (1367), 13 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:03,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:03,914 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:03,914 INFO L175 Difference]: Start difference. First operand has 492 places, 780 transitions, 11082 flow. Second operand 13 states and 1367 transitions. [2023-11-29 04:38:03,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 839 transitions, 12760 flow [2023-11-29 04:38:04,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 839 transitions, 12530 flow, removed 77 selfloop flow, removed 4 redundant places. [2023-11-29 04:38:04,978 INFO L231 Difference]: Finished difference. Result has 506 places, 793 transitions, 11414 flow [2023-11-29 04:38:04,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10861, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11414, PETRI_PLACES=506, PETRI_TRANSITIONS=793} [2023-11-29 04:38:04,979 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 381 predicate places. [2023-11-29 04:38:04,979 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 793 transitions, 11414 flow [2023-11-29 04:38:04,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:04,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:04,980 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:04,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 04:38:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:38:05,180 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:05,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash 653655230, now seen corresponding path program 19 times [2023-11-29 04:38:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846472079] [2023-11-29 04:38:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846472079] [2023-11-29 04:38:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846472079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516640043] [2023-11-29 04:38:05,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:38:05,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:05,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:05,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:05,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:38:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:05,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:38:05,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:05,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:38:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:05,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516640043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:05,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:38:05,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614920859] [2023-11-29 04:38:05,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:38:06,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:38:06,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 793 transitions, 11414 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:06,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:06,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:38:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:14,401 INFO L124 PetriNetUnfolderBase]: 7140/24759 cut-off events. [2023-11-29 04:38:14,401 INFO L125 PetriNetUnfolderBase]: For 152647/155104 co-relation queries the response was YES. [2023-11-29 04:38:14,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97598 conditions, 24759 events. 7140/24759 cut-off events. For 152647/155104 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 281106 event pairs, 668 based on Foata normal form. 382/24832 useless extension candidates. Maximal degree in co-relation 97343. Up to 4441 conditions per place. [2023-11-29 04:38:14,866 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 365 selfloop transitions, 90 changer transitions 0/827 dead transitions. [2023-11-29 04:38:14,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 827 transitions, 12566 flow [2023-11-29 04:38:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:38:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:38:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1067 transitions. [2023-11-29 04:38:14,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.83359375 [2023-11-29 04:38:14,868 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1067 transitions. [2023-11-29 04:38:14,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1067 transitions. [2023-11-29 04:38:14,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:14,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1067 transitions. [2023-11-29 04:38:14,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.7) internal successors, (1067), 10 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:14,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:14,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:14,872 INFO L175 Difference]: Start difference. First operand has 506 places, 793 transitions, 11414 flow. Second operand 10 states and 1067 transitions. [2023-11-29 04:38:14,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 827 transitions, 12566 flow [2023-11-29 04:38:15,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 827 transitions, 12370 flow, removed 33 selfloop flow, removed 6 redundant places. [2023-11-29 04:38:15,740 INFO L231 Difference]: Finished difference. Result has 510 places, 787 transitions, 11204 flow [2023-11-29 04:38:15,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11020, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11204, PETRI_PLACES=510, PETRI_TRANSITIONS=787} [2023-11-29 04:38:15,741 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 385 predicate places. [2023-11-29 04:38:15,741 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 787 transitions, 11204 flow [2023-11-29 04:38:15,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:15,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:15,742 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:15,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:38:15,942 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:15,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 769290454, now seen corresponding path program 20 times [2023-11-29 04:38:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761458183] [2023-11-29 04:38:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:16,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761458183] [2023-11-29 04:38:16,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761458183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302756328] [2023-11-29 04:38:16,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:38:16,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:16,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:16,422 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:16,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:38:16,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:38:16,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:16,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:38:16,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:16,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:38:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:16,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:16,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302756328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:38:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954224857] [2023-11-29 04:38:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:38:17,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:38:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 787 transitions, 11204 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:38:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:24,647 INFO L124 PetriNetUnfolderBase]: 6829/23791 cut-off events. [2023-11-29 04:38:24,647 INFO L125 PetriNetUnfolderBase]: For 142562/144929 co-relation queries the response was YES. [2023-11-29 04:38:25,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93053 conditions, 23791 events. 6829/23791 cut-off events. For 142562/144929 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 268383 event pairs, 659 based on Foata normal form. 357/23853 useless extension candidates. Maximal degree in co-relation 92797. Up to 4258 conditions per place. [2023-11-29 04:38:25,096 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 354 selfloop transitions, 88 changer transitions 0/756 dead transitions. [2023-11-29 04:38:25,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 756 transitions, 11362 flow [2023-11-29 04:38:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:38:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:38:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 04:38:25,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 04:38:25,098 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 04:38:25,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 04:38:25,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:25,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 04:38:25,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:25,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:25,101 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:25,102 INFO L175 Difference]: Start difference. First operand has 510 places, 787 transitions, 11204 flow. Second operand 10 states and 1062 transitions. [2023-11-29 04:38:25,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 756 transitions, 11362 flow [2023-11-29 04:38:25,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 756 transitions, 11117 flow, removed 48 selfloop flow, removed 12 redundant places. [2023-11-29 04:38:25,922 INFO L231 Difference]: Finished difference. Result has 503 places, 721 transitions, 10061 flow [2023-11-29 04:38:25,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9812, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10061, PETRI_PLACES=503, PETRI_TRANSITIONS=721} [2023-11-29 04:38:25,924 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 378 predicate places. [2023-11-29 04:38:25,924 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 721 transitions, 10061 flow [2023-11-29 04:38:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:25,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:25,924 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:25,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:38:26,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:38:26,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:26,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1496462420, now seen corresponding path program 21 times [2023-11-29 04:38:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:26,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421715876] [2023-11-29 04:38:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:26,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421715876] [2023-11-29 04:38:26,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421715876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:26,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894535790] [2023-11-29 04:38:26,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:38:26,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:26,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:26,781 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:26,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:38:26,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:38:26,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:26,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:38:26,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:27,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:38:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:27,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894535790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:27,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:38:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378969286] [2023-11-29 04:38:27,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:38:27,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:38:27,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 721 transitions, 10061 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:27,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:27,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:38:27,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:35,182 INFO L124 PetriNetUnfolderBase]: 7067/24466 cut-off events. [2023-11-29 04:38:35,182 INFO L125 PetriNetUnfolderBase]: For 141979/144426 co-relation queries the response was YES. [2023-11-29 04:38:35,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93838 conditions, 24466 events. 7067/24466 cut-off events. For 141979/144426 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 277521 event pairs, 669 based on Foata normal form. 453/24619 useless extension candidates. Maximal degree in co-relation 93586. Up to 4401 conditions per place. [2023-11-29 04:38:35,656 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 371 selfloop transitions, 94 changer transitions 0/779 dead transitions. [2023-11-29 04:38:35,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 779 transitions, 11823 flow [2023-11-29 04:38:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:38:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:38:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1364 transitions. [2023-11-29 04:38:35,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8197115384615384 [2023-11-29 04:38:35,657 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1364 transitions. [2023-11-29 04:38:35,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1364 transitions. [2023-11-29 04:38:35,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:35,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1364 transitions. [2023-11-29 04:38:35,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:35,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:35,662 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:35,662 INFO L175 Difference]: Start difference. First operand has 503 places, 721 transitions, 10061 flow. Second operand 13 states and 1364 transitions. [2023-11-29 04:38:35,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 779 transitions, 11823 flow [2023-11-29 04:38:36,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 779 transitions, 11655 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 04:38:36,541 INFO L231 Difference]: Finished difference. Result has 515 places, 736 transitions, 10516 flow [2023-11-29 04:38:36,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9897, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10516, PETRI_PLACES=515, PETRI_TRANSITIONS=736} [2023-11-29 04:38:36,543 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 390 predicate places. [2023-11-29 04:38:36,543 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 736 transitions, 10516 flow [2023-11-29 04:38:36,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:36,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:36,543 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:36,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 04:38:36,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:36,744 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:36,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash -323869234, now seen corresponding path program 22 times [2023-11-29 04:38:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477868964] [2023-11-29 04:38:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477868964] [2023-11-29 04:38:37,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477868964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:37,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377974655] [2023-11-29 04:38:37,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:38:37,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:37,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:37,201 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:37,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:38:37,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:38:37,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:37,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 04:38:37,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:37,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:38:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 04:38:37,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:38:37,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 04:38:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:37,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377974655] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:37,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:38:37,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 18] total 30 [2023-11-29 04:38:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257174250] [2023-11-29 04:38:37,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:38:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:38:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:38:38,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 128 [2023-11-29 04:38:38,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 736 transitions, 10516 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:38,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:38,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 128 [2023-11-29 04:38:38,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:45,344 INFO L124 PetriNetUnfolderBase]: 6740/23584 cut-off events. [2023-11-29 04:38:45,345 INFO L125 PetriNetUnfolderBase]: For 135179/137500 co-relation queries the response was YES. [2023-11-29 04:38:45,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90214 conditions, 23584 events. 6740/23584 cut-off events. For 135179/137500 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 266442 event pairs, 627 based on Foata normal form. 530/23833 useless extension candidates. Maximal degree in co-relation 89954. Up to 4233 conditions per place. [2023-11-29 04:38:45,747 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 273 selfloop transitions, 204 changer transitions 0/792 dead transitions. [2023-11-29 04:38:45,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 792 transitions, 12003 flow [2023-11-29 04:38:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:38:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:38:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1588 transitions. [2023-11-29 04:38:45,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8270833333333333 [2023-11-29 04:38:45,750 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1588 transitions. [2023-11-29 04:38:45,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1588 transitions. [2023-11-29 04:38:45,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:45,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1588 transitions. [2023-11-29 04:38:45,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.86666666666666) internal successors, (1588), 15 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:45,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:45,755 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:45,755 INFO L175 Difference]: Start difference. First operand has 515 places, 736 transitions, 10516 flow. Second operand 15 states and 1588 transitions. [2023-11-29 04:38:45,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 792 transitions, 12003 flow [2023-11-29 04:38:46,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 792 transitions, 11794 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-11-29 04:38:46,626 INFO L231 Difference]: Finished difference. Result has 528 places, 739 transitions, 10839 flow [2023-11-29 04:38:46,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10238, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10839, PETRI_PLACES=528, PETRI_TRANSITIONS=739} [2023-11-29 04:38:46,627 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 403 predicate places. [2023-11-29 04:38:46,627 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 739 transitions, 10839 flow [2023-11-29 04:38:46,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:46,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:46,628 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:46,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 04:38:46,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:46,828 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:46,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1688314018, now seen corresponding path program 23 times [2023-11-29 04:38:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466119310] [2023-11-29 04:38:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466119310] [2023-11-29 04:38:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466119310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610311450] [2023-11-29 04:38:47,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:38:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:47,252 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:47,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:38:47,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 04:38:47,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:47,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:38:47,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:47,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:38:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:47,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610311450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:38:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508181602] [2023-11-29 04:38:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:47,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:38:48,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:38:48,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 739 transitions, 10839 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:48,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:48,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:38:48,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:38:55,154 INFO L124 PetriNetUnfolderBase]: 6495/22808 cut-off events. [2023-11-29 04:38:55,154 INFO L125 PetriNetUnfolderBase]: For 133180/135447 co-relation queries the response was YES. [2023-11-29 04:38:55,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87431 conditions, 22808 events. 6495/22808 cut-off events. For 133180/135447 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 256425 event pairs, 649 based on Foata normal form. 467/22988 useless extension candidates. Maximal degree in co-relation 87164. Up to 4081 conditions per place. [2023-11-29 04:38:55,615 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 334 selfloop transitions, 120 changer transitions 0/768 dead transitions. [2023-11-29 04:38:55,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 768 transitions, 12077 flow [2023-11-29 04:38:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:38:55,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:38:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1056 transitions. [2023-11-29 04:38:55,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.825 [2023-11-29 04:38:55,618 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1056 transitions. [2023-11-29 04:38:55,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1056 transitions. [2023-11-29 04:38:55,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:38:55,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1056 transitions. [2023-11-29 04:38:55,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:55,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:55,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:55,622 INFO L175 Difference]: Start difference. First operand has 528 places, 739 transitions, 10839 flow. Second operand 10 states and 1056 transitions. [2023-11-29 04:38:55,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 768 transitions, 12077 flow [2023-11-29 04:38:56,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 768 transitions, 11902 flow, removed 65 selfloop flow, removed 2 redundant places. [2023-11-29 04:38:56,361 INFO L231 Difference]: Finished difference. Result has 538 places, 742 transitions, 11039 flow [2023-11-29 04:38:56,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10604, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11039, PETRI_PLACES=538, PETRI_TRANSITIONS=742} [2023-11-29 04:38:56,362 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 413 predicate places. [2023-11-29 04:38:56,362 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 742 transitions, 11039 flow [2023-11-29 04:38:56,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:56,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:38:56,362 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:38:56,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 04:38:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:56,563 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:38:56,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1192845194, now seen corresponding path program 24 times [2023-11-29 04:38:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:56,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31223416] [2023-11-29 04:38:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:38:57,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31223416] [2023-11-29 04:38:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31223416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:38:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700627065] [2023-11-29 04:38:57,188 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:38:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:57,189 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:57,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:38:57,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 04:38:57,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:38:57,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:38:57,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:57,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:38:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:38:57,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:57,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700627065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:57,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:38:57,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:38:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335489866] [2023-11-29 04:38:57,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:57,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:38:57,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:38:57,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:38:58,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:38:58,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 742 transitions, 11039 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:38:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:38:58,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:38:58,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:05,265 INFO L124 PetriNetUnfolderBase]: 6745/23383 cut-off events. [2023-11-29 04:39:05,265 INFO L125 PetriNetUnfolderBase]: For 135375/137694 co-relation queries the response was YES. [2023-11-29 04:39:05,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90000 conditions, 23383 events. 6745/23383 cut-off events. For 135375/137694 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 263818 event pairs, 640 based on Foata normal form. 361/23450 useless extension candidates. Maximal degree in co-relation 89727. Up to 4317 conditions per place. [2023-11-29 04:39:05,910 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 437 selfloop transitions, 74 changer transitions 0/825 dead transitions. [2023-11-29 04:39:05,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 825 transitions, 13270 flow [2023-11-29 04:39:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:39:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:39:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1372 transitions. [2023-11-29 04:39:05,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8245192307692307 [2023-11-29 04:39:05,913 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1372 transitions. [2023-11-29 04:39:05,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1372 transitions. [2023-11-29 04:39:05,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:05,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1372 transitions. [2023-11-29 04:39:05,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.53846153846153) internal successors, (1372), 13 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:05,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:05,916 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:05,916 INFO L175 Difference]: Start difference. First operand has 538 places, 742 transitions, 11039 flow. Second operand 13 states and 1372 transitions. [2023-11-29 04:39:05,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 825 transitions, 13270 flow [2023-11-29 04:39:06,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 825 transitions, 12951 flow, removed 48 selfloop flow, removed 6 redundant places. [2023-11-29 04:39:06,628 INFO L231 Difference]: Finished difference. Result has 553 places, 772 transitions, 11633 flow [2023-11-29 04:39:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10722, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11633, PETRI_PLACES=553, PETRI_TRANSITIONS=772} [2023-11-29 04:39:06,629 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 428 predicate places. [2023-11-29 04:39:06,629 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 772 transitions, 11633 flow [2023-11-29 04:39:06,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:06,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:06,629 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:06,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 04:39:06,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:06,830 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:39:06,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1461006952, now seen corresponding path program 25 times [2023-11-29 04:39:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49928661] [2023-11-29 04:39:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:39:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49928661] [2023-11-29 04:39:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49928661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867244830] [2023-11-29 04:39:07,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:39:07,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:07,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:07,186 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:07,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:39:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:07,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:39:07,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:07,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:39:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:39:07,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867244830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:07,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:39:07,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739881731] [2023-11-29 04:39:07,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:07,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:39:08,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:39:08,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 772 transitions, 11633 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:08,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:08,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:39:08,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:15,904 INFO L124 PetriNetUnfolderBase]: 6752/23549 cut-off events. [2023-11-29 04:39:15,904 INFO L125 PetriNetUnfolderBase]: For 142382/144713 co-relation queries the response was YES. [2023-11-29 04:39:16,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91348 conditions, 23549 events. 6752/23549 cut-off events. For 142382/144713 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 266069 event pairs, 649 based on Foata normal form. 397/23659 useless extension candidates. Maximal degree in co-relation 91069. Up to 4354 conditions per place. [2023-11-29 04:39:16,389 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 437 selfloop transitions, 81 changer transitions 0/832 dead transitions. [2023-11-29 04:39:16,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 832 transitions, 13578 flow [2023-11-29 04:39:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:39:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:39:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1062 transitions. [2023-11-29 04:39:16,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8296875 [2023-11-29 04:39:16,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1062 transitions. [2023-11-29 04:39:16,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1062 transitions. [2023-11-29 04:39:16,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:16,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1062 transitions. [2023-11-29 04:39:16,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.2) internal successors, (1062), 10 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:16,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:16,393 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:16,393 INFO L175 Difference]: Start difference. First operand has 553 places, 772 transitions, 11633 flow. Second operand 10 states and 1062 transitions. [2023-11-29 04:39:16,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 832 transitions, 13578 flow [2023-11-29 04:39:17,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 832 transitions, 13201 flow, removed 155 selfloop flow, removed 3 redundant places. [2023-11-29 04:39:17,173 INFO L231 Difference]: Finished difference. Result has 564 places, 783 transitions, 11829 flow [2023-11-29 04:39:17,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11332, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11829, PETRI_PLACES=564, PETRI_TRANSITIONS=783} [2023-11-29 04:39:17,174 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 439 predicate places. [2023-11-29 04:39:17,174 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 783 transitions, 11829 flow [2023-11-29 04:39:17,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:17,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:17,174 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:17,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 04:39:17,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 04:39:17,375 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:39:17,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2139135416, now seen corresponding path program 26 times [2023-11-29 04:39:17,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:17,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4409466] [2023-11-29 04:39:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:17,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:39:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4409466] [2023-11-29 04:39:17,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4409466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:17,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168214253] [2023-11-29 04:39:17,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:39:17,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:17,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:17,873 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:17,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:39:18,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:39:18,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:39:18,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:39:18,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:18,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:39:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:39:18,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168214253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:39:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018744411] [2023-11-29 04:39:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:18,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:39:18,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:39:18,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 783 transitions, 11829 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:18,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:18,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:39:18,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:26,951 INFO L124 PetriNetUnfolderBase]: 7133/24713 cut-off events. [2023-11-29 04:39:26,951 INFO L125 PetriNetUnfolderBase]: For 150032/152470 co-relation queries the response was YES. [2023-11-29 04:39:27,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95676 conditions, 24713 events. 7133/24713 cut-off events. For 150032/152470 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 281935 event pairs, 667 based on Foata normal form. 386/24782 useless extension candidates. Maximal degree in co-relation 95392. Up to 4575 conditions per place. [2023-11-29 04:39:27,480 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 450 selfloop transitions, 84 changer transitions 0/848 dead transitions. [2023-11-29 04:39:27,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 848 transitions, 13799 flow [2023-11-29 04:39:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:39:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:39:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1374 transitions. [2023-11-29 04:39:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8257211538461539 [2023-11-29 04:39:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1374 transitions. [2023-11-29 04:39:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1374 transitions. [2023-11-29 04:39:27,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:27,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1374 transitions. [2023-11-29 04:39:27,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.6923076923077) internal successors, (1374), 13 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:27,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:27,485 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:27,485 INFO L175 Difference]: Start difference. First operand has 564 places, 783 transitions, 11829 flow. Second operand 13 states and 1374 transitions. [2023-11-29 04:39:27,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 848 transitions, 13799 flow [2023-11-29 04:39:28,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 848 transitions, 13438 flow, removed 134 selfloop flow, removed 4 redundant places. [2023-11-29 04:39:28,470 INFO L231 Difference]: Finished difference. Result has 577 places, 806 transitions, 12251 flow [2023-11-29 04:39:28,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11599, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12251, PETRI_PLACES=577, PETRI_TRANSITIONS=806} [2023-11-29 04:39:28,471 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 452 predicate places. [2023-11-29 04:39:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 806 transitions, 12251 flow [2023-11-29 04:39:28,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:28,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:28,472 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:28,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:39:28,672 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:39:28,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2025917660, now seen corresponding path program 27 times [2023-11-29 04:39:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799528179] [2023-11-29 04:39:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:39:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799528179] [2023-11-29 04:39:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799528179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586975529] [2023-11-29 04:39:29,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:39:29,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:29,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:29,002 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:39:29,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 04:39:29,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:39:29,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:39:29,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:29,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:39:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:39:29,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:29,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586975529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:29,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:29,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-29 04:39:29,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378014327] [2023-11-29 04:39:29,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:29,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:29,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:29,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:29,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:39:29,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:39:29,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 806 transitions, 12251 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:29,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:29,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:39:29,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:38,810 INFO L124 PetriNetUnfolderBase]: 7371/25371 cut-off events. [2023-11-29 04:39:38,810 INFO L125 PetriNetUnfolderBase]: For 151192/153833 co-relation queries the response was YES. [2023-11-29 04:39:39,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98021 conditions, 25371 events. 7371/25371 cut-off events. For 151192/153833 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 291087 event pairs, 686 based on Foata normal form. 464/25511 useless extension candidates. Maximal degree in co-relation 97732. Up to 4723 conditions per place. [2023-11-29 04:39:39,399 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 460 selfloop transitions, 92 changer transitions 0/866 dead transitions. [2023-11-29 04:39:39,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 866 transitions, 14087 flow [2023-11-29 04:39:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:39:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:39:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1365 transitions. [2023-11-29 04:39:39,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2023-11-29 04:39:39,401 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1365 transitions. [2023-11-29 04:39:39,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1365 transitions. [2023-11-29 04:39:39,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:39,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1365 transitions. [2023-11-29 04:39:39,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:39,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:39,405 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:39,405 INFO L175 Difference]: Start difference. First operand has 577 places, 806 transitions, 12251 flow. Second operand 13 states and 1365 transitions. [2023-11-29 04:39:39,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 866 transitions, 14087 flow [2023-11-29 04:39:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 866 transitions, 13846 flow, removed 58 selfloop flow, removed 7 redundant places. [2023-11-29 04:39:40,494 INFO L231 Difference]: Finished difference. Result has 589 places, 822 transitions, 12582 flow [2023-11-29 04:39:40,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12017, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12582, PETRI_PLACES=589, PETRI_TRANSITIONS=822} [2023-11-29 04:39:40,496 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 464 predicate places. [2023-11-29 04:39:40,496 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 822 transitions, 12582 flow [2023-11-29 04:39:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:40,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:40,496 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:40,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 04:39:40,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 04:39:40,697 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:39:40,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash 436717186, now seen corresponding path program 28 times [2023-11-29 04:39:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:40,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983598586] [2023-11-29 04:39:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:40,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:39:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983598586] [2023-11-29 04:39:41,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983598586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:41,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739389411] [2023-11-29 04:39:41,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:39:41,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:41,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:41,251 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:41,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 04:39:41,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:39:41,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:39:41,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:39:41,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:41,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:39:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:39:41,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:41,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739389411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:41,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:41,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-29 04:39:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713621222] [2023-11-29 04:39:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:39:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:39:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:39:42,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:39:42,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 822 transitions, 12582 flow. Second operand has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:42,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:42,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:39:42,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:39:50,759 INFO L124 PetriNetUnfolderBase]: 7084/24620 cut-off events. [2023-11-29 04:39:50,760 INFO L125 PetriNetUnfolderBase]: For 145077/147630 co-relation queries the response was YES. [2023-11-29 04:39:51,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94857 conditions, 24620 events. 7084/24620 cut-off events. For 145077/147630 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 282000 event pairs, 638 based on Foata normal form. 525/24836 useless extension candidates. Maximal degree in co-relation 94563. Up to 4557 conditions per place. [2023-11-29 04:39:51,374 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 342 selfloop transitions, 218 changer transitions 0/874 dead transitions. [2023-11-29 04:39:51,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 874 transitions, 14178 flow [2023-11-29 04:39:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:39:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:39:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1583 transitions. [2023-11-29 04:39:51,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8244791666666667 [2023-11-29 04:39:51,376 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1583 transitions. [2023-11-29 04:39:51,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1583 transitions. [2023-11-29 04:39:51,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:39:51,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1583 transitions. [2023-11-29 04:39:51,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.53333333333333) internal successors, (1583), 15 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:51,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:51,380 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 128.0) internal successors, (2048), 16 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:51,380 INFO L175 Difference]: Start difference. First operand has 589 places, 822 transitions, 12582 flow. Second operand 15 states and 1583 transitions. [2023-11-29 04:39:51,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 874 transitions, 14178 flow [2023-11-29 04:39:52,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 874 transitions, 14015 flow, removed 31 selfloop flow, removed 4 redundant places. [2023-11-29 04:39:52,377 INFO L231 Difference]: Finished difference. Result has 601 places, 828 transitions, 13018 flow [2023-11-29 04:39:52,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12357, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13018, PETRI_PLACES=601, PETRI_TRANSITIONS=828} [2023-11-29 04:39:52,378 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 476 predicate places. [2023-11-29 04:39:52,378 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 828 transitions, 13018 flow [2023-11-29 04:39:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.77777777777777) internal successors, (880), 9 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:52,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:39:52,379 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:39:52,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 04:39:52,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 04:39:52,579 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:39:52,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:52,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1008615094, now seen corresponding path program 29 times [2023-11-29 04:39:52,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:52,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707928054] [2023-11-29 04:39:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:52,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:39:53,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:53,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707928054] [2023-11-29 04:39:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707928054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505838718] [2023-11-29 04:39:53,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:39:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:53,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:53,046 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:53,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 04:39:53,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-29 04:39:53,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:39:53,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:39:53,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:53,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:39:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:39:53,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505838718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:53,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:39:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577335194] [2023-11-29 04:39:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:39:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:39:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:39:53,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:39:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 828 transitions, 13018 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:39:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:39:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:39:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:40:02,427 INFO L124 PetriNetUnfolderBase]: 7049/24388 cut-off events. [2023-11-29 04:40:02,427 INFO L125 PetriNetUnfolderBase]: For 148251/150735 co-relation queries the response was YES. [2023-11-29 04:40:02,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94465 conditions, 24388 events. 7049/24388 cut-off events. For 148251/150735 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 279882 event pairs, 654 based on Foata normal form. 464/24538 useless extension candidates. Maximal degree in co-relation 94165. Up to 4558 conditions per place. [2023-11-29 04:40:02,997 INFO L140 encePairwiseOnDemand]: 111/128 looper letters, 441 selfloop transitions, 139 changer transitions 0/894 dead transitions. [2023-11-29 04:40:02,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 894 transitions, 14997 flow [2023-11-29 04:40:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:40:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:40:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1365 transitions. [2023-11-29 04:40:02,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8203125 [2023-11-29 04:40:02,999 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1365 transitions. [2023-11-29 04:40:02,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1365 transitions. [2023-11-29 04:40:02,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:40:02,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1365 transitions. [2023-11-29 04:40:03,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:03,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:03,002 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 128.0) internal successors, (1792), 14 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:03,002 INFO L175 Difference]: Start difference. First operand has 601 places, 828 transitions, 13018 flow. Second operand 13 states and 1365 transitions. [2023-11-29 04:40:03,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 894 transitions, 14997 flow [2023-11-29 04:40:03,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 894 transitions, 14786 flow, removed 68 selfloop flow, removed 2 redundant places. [2023-11-29 04:40:03,853 INFO L231 Difference]: Finished difference. Result has 617 places, 841 transitions, 13548 flow [2023-11-29 04:40:03,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12769, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13548, PETRI_PLACES=617, PETRI_TRANSITIONS=841} [2023-11-29 04:40:03,854 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 492 predicate places. [2023-11-29 04:40:03,854 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 841 transitions, 13548 flow [2023-11-29 04:40:03,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:03,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:40:03,855 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:40:03,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-29 04:40:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:40:04,055 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:40:04,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1144544766, now seen corresponding path program 30 times [2023-11-29 04:40:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941140911] [2023-11-29 04:40:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:40:04,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941140911] [2023-11-29 04:40:04,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941140911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:40:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503369508] [2023-11-29 04:40:04,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:40:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:04,683 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:04,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 04:40:04,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 04:40:04,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:40:04,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:40:04,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:05,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:40:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:40:05,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:40:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503369508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:40:05,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:40:05,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:40:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254852951] [2023-11-29 04:40:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:40:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:40:05,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:05,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:40:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:40:05,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:40:05,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 841 transitions, 13548 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:05,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:40:05,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:40:05,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:40:13,920 INFO L124 PetriNetUnfolderBase]: 7054/24458 cut-off events. [2023-11-29 04:40:13,920 INFO L125 PetriNetUnfolderBase]: For 151475/153892 co-relation queries the response was YES. [2023-11-29 04:40:14,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95461 conditions, 24458 events. 7054/24458 cut-off events. For 151475/153892 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 280853 event pairs, 659 based on Foata normal form. 410/24555 useless extension candidates. Maximal degree in co-relation 95154. Up to 4578 conditions per place. [2023-11-29 04:40:14,438 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 482 selfloop transitions, 90 changer transitions 0/886 dead transitions. [2023-11-29 04:40:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 886 transitions, 15140 flow [2023-11-29 04:40:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:40:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:40:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1061 transitions. [2023-11-29 04:40:14,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.82890625 [2023-11-29 04:40:14,440 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1061 transitions. [2023-11-29 04:40:14,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1061 transitions. [2023-11-29 04:40:14,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:40:14,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1061 transitions. [2023-11-29 04:40:14,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.1) internal successors, (1061), 10 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:14,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:14,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 128.0) internal successors, (1408), 11 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:14,442 INFO L175 Difference]: Start difference. First operand has 617 places, 841 transitions, 13548 flow. Second operand 10 states and 1061 transitions. [2023-11-29 04:40:14,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 886 transitions, 15140 flow [2023-11-29 04:40:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 886 transitions, 14896 flow, removed 103 selfloop flow, removed 2 redundant places. [2023-11-29 04:40:15,315 INFO L231 Difference]: Finished difference. Result has 628 places, 849 transitions, 13727 flow [2023-11-29 04:40:15,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=13304, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13727, PETRI_PLACES=628, PETRI_TRANSITIONS=849} [2023-11-29 04:40:15,316 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 503 predicate places. [2023-11-29 04:40:15,316 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 849 transitions, 13727 flow [2023-11-29 04:40:15,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:15,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:40:15,317 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:40:15,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 04:40:15,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:40:15,517 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-29 04:40:15,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 696659592, now seen corresponding path program 31 times [2023-11-29 04:40:15,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608447884] [2023-11-29 04:40:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 04:40:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608447884] [2023-11-29 04:40:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608447884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:40:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442276340] [2023-11-29 04:40:16,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:40:16,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:16,092 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:16,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a09ac64-5e31-49b2-879f-7dddb0927530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 04:40:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:16,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:40:16,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:16,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:40:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-29 04:40:16,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:40:16,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442276340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:40:16,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:40:16,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-29 04:40:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077649079] [2023-11-29 04:40:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:40:16,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:40:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:40:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:40:16,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 128 [2023-11-29 04:40:16,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 849 transitions, 13727 flow. Second operand has 10 states, 10 states have (on average 97.6) internal successors, (976), 10 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:40:16,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:40:16,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 128 [2023-11-29 04:40:16,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand