./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:44,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:44,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:57:44,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:44,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:44,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:44,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:44,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:44,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:44,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:44,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:44,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:44,604 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:44,605 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:44,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:44,610 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:44,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:44,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:44,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:44,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:44,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:44,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:44,615 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:57:44,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:44,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:44,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:44,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:44,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:44,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:44,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:44,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:44,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:44,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:44,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:44,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:44,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:44,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:44,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:44,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:44,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:44,623 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:44,623 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_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2023-11-19 07:57:44,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:44,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:44,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:44,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:44,968 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:44,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-19 07:57:48,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:48,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:48,480 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-19 07:57:48,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/data/a9d24170b/f49ce0118c5441d68db81e13e98fe57f/FLAG763819936 [2023-11-19 07:57:48,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/data/a9d24170b/f49ce0118c5441d68db81e13e98fe57f [2023-11-19 07:57:48,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:48,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:48,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:48,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:48,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:48,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:48" (1/1) ... [2023-11-19 07:57:48,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73100106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:48, skipping insertion in model container [2023-11-19 07:57:48,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:48" (1/1) ... [2023-11-19 07:57:48,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:49,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:49,209 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:49,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:49,338 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:49,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49 WrapperNode [2023-11-19 07:57:49,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:49,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:49,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:49,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:49,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,420 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 353 [2023-11-19 07:57:49,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:49,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:49,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:49,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:49,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:49,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:49,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:49,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:49,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (1/1) ... [2023-11-19 07:57:49,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:49,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:49,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:57:49,613 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:49,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:49,615 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:49,787 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:49,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:50,407 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:50,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:50,420 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-19 07:57:50,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:50 BoogieIcfgContainer [2023-11-19 07:57:50,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:50,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:50,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:50,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:50,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:48" (1/3) ... [2023-11-19 07:57:50,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0c5a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:50, skipping insertion in model container [2023-11-19 07:57:50,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:49" (2/3) ... [2023-11-19 07:57:50,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0c5a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:50, skipping insertion in model container [2023-11-19 07:57:50,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:50" (3/3) ... [2023-11-19 07:57:50,438 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-11-19 07:57:50,447 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:50,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:50,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:57:50,459 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:50,584 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:57:50,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:50,849 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-19 07:57:50,850 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:50,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-19 07:57:50,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:50,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:50,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:50,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:50,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 377 transitions, 761 flow [2023-11-19 07:57:51,008 INFO L124 PetriNetUnfolderBase]: 78/602 cut-off events. [2023-11-19 07:57:51,009 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 602 events. 78/602 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3369 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 340. Up to 8 conditions per place. [2023-11-19 07:57:51,052 INFO L119 LiptonReduction]: Number of co-enabled transitions 50820 [2023-11-19 07:57:55,704 INFO L134 LiptonReduction]: Checked pairs total: 189412 [2023-11-19 07:57:55,704 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-11-19 07:57:55,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:55,740 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;@216c81c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:55,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:57:55,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:55,747 INFO L124 PetriNetUnfolderBase]: 10/38 cut-off events. [2023-11-19 07:57:55,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:55,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:57:55,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:57:55,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash 982467427, now seen corresponding path program 1 times [2023-11-19 07:57:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:55,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090049348] [2023-11-19 07:57:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:55,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090049348] [2023-11-19 07:57:56,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090049348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:56,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:56,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909402066] [2023-11-19 07:57:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:56,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:56,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 614 [2023-11-19 07:57:56,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:56,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 614 [2023-11-19 07:57:56,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:56,777 INFO L124 PetriNetUnfolderBase]: 822/2954 cut-off events. [2023-11-19 07:57:56,778 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:57:56,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 2954 events. 822/2954 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23989 event pairs, 684 based on Foata normal form. 357/3023 useless extension candidates. Maximal degree in co-relation 4323. Up to 1527 conditions per place. [2023-11-19 07:57:56,798 INFO L140 encePairwiseOnDemand]: 578/614 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-11-19 07:57:56,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 461 flow [2023-11-19 07:57:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:56,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1074 transitions. [2023-11-19 07:57:56,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830618892508144 [2023-11-19 07:57:56,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1074 transitions. [2023-11-19 07:57:56,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1074 transitions. [2023-11-19 07:57:56,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:56,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1074 transitions. [2023-11-19 07:57:56,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 614.0) internal successors, (2456), 4 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,858 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 395 flow. Second operand 3 states and 1074 transitions. [2023-11-19 07:57:56,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 461 flow [2023-11-19 07:57:56,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:56,870 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 341 flow [2023-11-19 07:57:56,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-11-19 07:57:56,876 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-11-19 07:57:56,877 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 341 flow [2023-11-19 07:57:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:56,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:56,879 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:56,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:56,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:57:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -817306192, now seen corresponding path program 1 times [2023-11-19 07:57:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093279136] [2023-11-19 07:57:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093279136] [2023-11-19 07:57:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093279136] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:57,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668157024] [2023-11-19 07:57:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:57,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:57,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:57,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:57,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:57,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:57,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668157024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:57,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:57,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:57:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329944255] [2023-11-19 07:57:57,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:57,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:57,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:57,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-19 07:57:57,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:57,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:57,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-19 07:57:57,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:57,892 INFO L124 PetriNetUnfolderBase]: 822/2957 cut-off events. [2023-11-19 07:57:57,893 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:57:57,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2957 events. 822/2957 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23990 event pairs, 684 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 4491. Up to 1527 conditions per place. [2023-11-19 07:57:57,912 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-11-19 07:57:57,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 489 flow [2023-11-19 07:57:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:57:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2015 transitions. [2023-11-19 07:57:57,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469598262757872 [2023-11-19 07:57:57,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2015 transitions. [2023-11-19 07:57:57,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2015 transitions. [2023-11-19 07:57:57,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:57,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2015 transitions. [2023-11-19 07:57:57,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.8333333333333) internal successors, (2015), 6 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:57,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:57,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:57,951 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 341 flow. Second operand 6 states and 2015 transitions. [2023-11-19 07:57:57,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 489 flow [2023-11-19 07:57:57,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 485 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:57,958 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 373 flow [2023-11-19 07:57:57,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-11-19 07:57:57,959 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-11-19 07:57:57,959 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 373 flow [2023-11-19 07:57:57,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.57142857142856) internal successors, (2279), 7 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:57,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:57,962 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:57:57,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:57:58,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:58,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:57:58,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:58,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1829498531, now seen corresponding path program 2 times [2023-11-19 07:57:58,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:58,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599055729] [2023-11-19 07:57:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:58,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599055729] [2023-11-19 07:57:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599055729] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957507861] [2023-11-19 07:57:58,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:58,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:58,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:58,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:58,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:58,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:58,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:58,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:58,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:58,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:58,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957507861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:58,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:58,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:57:58,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532440367] [2023-11-19 07:57:58,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:58,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:57:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:57:58,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:58,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 614 [2023-11-19 07:57:58,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 373 flow. Second operand has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:58,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:58,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 614 [2023-11-19 07:57:58,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:59,243 INFO L124 PetriNetUnfolderBase]: 822/2963 cut-off events. [2023-11-19 07:57:59,243 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:57:59,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 2963 events. 822/2963 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24059 event pairs, 684 based on Foata normal form. 6/2682 useless extension candidates. Maximal degree in co-relation 4482. Up to 1527 conditions per place. [2023-11-19 07:57:59,266 INFO L140 encePairwiseOnDemand]: 611/614 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-11-19 07:57:59,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 557 flow [2023-11-19 07:57:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:57:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3968 transitions. [2023-11-19 07:57:59,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385450597176982 [2023-11-19 07:57:59,280 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3968 transitions. [2023-11-19 07:57:59,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3968 transitions. [2023-11-19 07:57:59,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:59,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3968 transitions. [2023-11-19 07:57:59,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 330.6666666666667) internal successors, (3968), 12 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,367 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 614.0) internal successors, (7982), 13 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,367 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 373 flow. Second operand 12 states and 3968 transitions. [2023-11-19 07:57:59,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 557 flow [2023-11-19 07:57:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 543 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:59,375 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 443 flow [2023-11-19 07:57:59,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=614, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-11-19 07:57:59,377 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-11-19 07:57:59,377 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 443 flow [2023-11-19 07:57:59,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 325.3076923076923) internal successors, (4229), 13 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:59,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:59,382 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:57:59,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:57:59,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:59,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 07:57:59,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1067342973, now seen corresponding path program 3 times [2023-11-19 07:57:59,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550931416] [2023-11-19 07:57:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:59,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:59,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:59,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:59,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-19 07:57:59,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-19 07:57:59,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-19 07:57:59,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-19 07:57:59,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-19 07:57:59,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-19 07:57:59,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-19 07:57:59,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-19 07:57:59,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-19 07:57:59,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-19 07:57:59,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-19 07:57:59,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-19 07:57:59,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-19 07:57:59,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-19 07:57:59,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-19 07:57:59,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-19 07:57:59,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-19 07:57:59,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-19 07:57:59,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-19 07:57:59,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-19 07:57:59,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-19 07:57:59,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-19 07:57:59,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:59,719 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-19 07:57:59,722 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:59,722 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:57:59,818 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:57:59,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,035 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-19 07:58:00,036 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:58:00,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-19 07:58:00,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:00,082 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 489 transitions, 994 flow [2023-11-19 07:58:00,556 INFO L124 PetriNetUnfolderBase]: 126/971 cut-off events. [2023-11-19 07:58:00,556 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:58:00,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 971 events. 126/971 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6218 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 604. Up to 12 conditions per place. [2023-11-19 07:58:00,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 128260 [2023-11-19 07:58:06,117 INFO L134 LiptonReduction]: Checked pairs total: 488298 [2023-11-19 07:58:06,117 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-11-19 07:58:06,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:06,121 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;@216c81c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:06,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-19 07:58:06,132 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:06,132 INFO L124 PetriNetUnfolderBase]: 26/116 cut-off events. [2023-11-19 07:58:06,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:06,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:06,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:58:06,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1331769326, now seen corresponding path program 1 times [2023-11-19 07:58:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024641594] [2023-11-19 07:58:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024641594] [2023-11-19 07:58:06,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024641594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756149937] [2023-11-19 07:58:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:06,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:06,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-19 07:58:06,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 257 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:06,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:06,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-19 07:58:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:15,549 INFO L124 PetriNetUnfolderBase]: 31138/70964 cut-off events. [2023-11-19 07:58:15,549 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-19 07:58:15,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115060 conditions, 70964 events. 31138/70964 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 818310 event pairs, 27108 based on Foata normal form. 9334/72932 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-11-19 07:58:16,099 INFO L140 encePairwiseOnDemand]: 753/799 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-11-19 07:58:16,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 618 flow [2023-11-19 07:58:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-19 07:58:16,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811430955360868 [2023-11-19 07:58:16,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-19 07:58:16,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-19 07:58:16,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:16,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-19 07:58:16,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,125 INFO L175 Difference]: Start difference. First operand has 209 places, 257 transitions, 530 flow. Second operand 3 states and 1393 transitions. [2023-11-19 07:58:16,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 618 flow [2023-11-19 07:58:16,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 618 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:58:16,135 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 456 flow [2023-11-19 07:58:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-11-19 07:58:16,138 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-11-19 07:58:16,140 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 456 flow [2023-11-19 07:58:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.0) internal successors, (1269), 3 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:16,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:16,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:58:16,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash 944147115, now seen corresponding path program 1 times [2023-11-19 07:58:16,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:16,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627931122] [2023-11-19 07:58:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627931122] [2023-11-19 07:58:16,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627931122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579714437] [2023-11-19 07:58:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:16,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:16,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:58:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:58:16,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579714437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:58:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359483760] [2023-11-19 07:58:16,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:16,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:16,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:16,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:16,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 799 [2023-11-19 07:58:16,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:16,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:16,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 799 [2023-11-19 07:58:16,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:24,107 INFO L124 PetriNetUnfolderBase]: 30503/70084 cut-off events. [2023-11-19 07:58:24,107 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-11-19 07:58:24,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114152 conditions, 70084 events. 30503/70084 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 815886 event pairs, 13068 based on Foata normal form. 0/62936 useless extension candidates. Maximal degree in co-relation 114139. Up to 43937 conditions per place. [2023-11-19 07:58:24,517 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-19 07:58:24,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 712 flow [2023-11-19 07:58:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1370 transitions. [2023-11-19 07:58:24,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715477680433876 [2023-11-19 07:58:24,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1370 transitions. [2023-11-19 07:58:24,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1370 transitions. [2023-11-19 07:58:24,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:24,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1370 transitions. [2023-11-19 07:58:24,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 456.6666666666667) internal successors, (1370), 3 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:24,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:24,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 799.0) internal successors, (3196), 4 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:24,543 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 456 flow. Second operand 3 states and 1370 transitions. [2023-11-19 07:58:24,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 712 flow [2023-11-19 07:58:24,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 708 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:24,551 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 464 flow [2023-11-19 07:58:24,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-11-19 07:58:24,555 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-11-19 07:58:24,556 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 464 flow [2023-11-19 07:58:24,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:24,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:24,558 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:24,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:24,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:58:24,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:58:24,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -380539492, now seen corresponding path program 1 times [2023-11-19 07:58:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:24,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290436529] [2023-11-19 07:58:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:24,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:24,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290436529] [2023-11-19 07:58:24,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290436529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938853969] [2023-11-19 07:58:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:24,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:24,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:24,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:58:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:24,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:24,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:24,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:24,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938853969] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:24,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:24,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:58:24,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419110143] [2023-11-19 07:58:24,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:25,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-19 07:58:25,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:25,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:25,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-19 07:58:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:33,813 INFO L124 PetriNetUnfolderBase]: 31206/71217 cut-off events. [2023-11-19 07:58:33,814 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2023-11-19 07:58:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116070 conditions, 71217 events. 31206/71217 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 822097 event pairs, 27108 based on Foata normal form. 3/64037 useless extension candidates. Maximal degree in co-relation 116042. Up to 43958 conditions per place. [2023-11-19 07:58:34,315 INFO L140 encePairwiseOnDemand]: 796/799 looper letters, 85 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2023-11-19 07:58:34,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 219 transitions, 656 flow [2023-11-19 07:58:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2612 transitions. [2023-11-19 07:58:34,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448477263245723 [2023-11-19 07:58:34,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2612 transitions. [2023-11-19 07:58:34,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2612 transitions. [2023-11-19 07:58:34,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:34,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2612 transitions. [2023-11-19 07:58:34,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 435.3333333333333) internal successors, (2612), 6 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:34,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 799.0) internal successors, (5593), 7 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:34,370 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 799.0) internal successors, (5593), 7 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:34,371 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 464 flow. Second operand 6 states and 2612 transitions. [2023-11-19 07:58:34,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 219 transitions, 656 flow [2023-11-19 07:58:34,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 219 transitions, 654 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:34,380 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 498 flow [2023-11-19 07:58:34,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=799, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2023-11-19 07:58:34,382 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2023-11-19 07:58:34,383 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 498 flow [2023-11-19 07:58:34,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 421.7142857142857) internal successors, (2952), 7 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:34,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:34,385 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:58:34,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:58:34,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-19 07:58:34,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash 516320141, now seen corresponding path program 2 times [2023-11-19 07:58:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:34,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249390026] [2023-11-19 07:58:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249390026] [2023-11-19 07:58:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249390026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:34,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698595436] [2023-11-19 07:58:34,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:58:34,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:34,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:34,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:34,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10da43c-6d57-44ed-a92c-806bca467980/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:58:34,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:58:34,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:58:34,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:34,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:34,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:58:35,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698595436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:35,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:35,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:58:35,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468657842] [2023-11-19 07:58:35,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:35,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:58:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:58:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:58:35,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 799 [2023-11-19 07:58:35,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 498 flow. Second operand has 13 states, 13 states have (on average 421.38461538461536) internal successors, (5478), 13 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:35,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:35,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 799 [2023-11-19 07:58:35,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand