./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme --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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:59,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:59,786 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 11:59:59,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:59,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:59,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:59,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:59,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:59,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:59:59,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:59:59,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:59,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:59,821 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:59,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:59,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:59:59,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:59:59,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:59,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:59:59,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:59,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:59:59,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:59:59,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:59:59,827 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 11:59:59,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:59:59,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:59:59,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:59,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:59,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:59,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:59,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:59:59,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:59:59,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:59,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:59:59,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:59:59,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:59,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:59:59,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:59:59,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:59:59,835 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:59:59,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:59:59,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:59:59,837 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_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2023-11-26 12:00:00,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:00,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:00,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:00,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:00,167 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:00,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-26 12:00:03,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:03,598 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:03,599 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-11-26 12:00:03,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/data/cea42c261/faa092d2ce274e028c3956722ffee7fb/FLAG2b6e315b2 [2023-11-26 12:00:03,630 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/data/cea42c261/faa092d2ce274e028c3956722ffee7fb [2023-11-26 12:00:03,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:03,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:03,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:03,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:03,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:03,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:03" (1/1) ... [2023-11-26 12:00:03,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f24453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:03, skipping insertion in model container [2023-11-26 12:00:03,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:03" (1/1) ... [2023-11-26 12:00:03,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:04,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:04,334 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:04,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:04,461 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:04,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04 WrapperNode [2023-11-26 12:00:04,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:04,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:04,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:04,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:04,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,538 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 285 [2023-11-26 12:00:04,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:04,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:04,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:04,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:04,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:04,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:04,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:04,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:04,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (1/1) ... [2023-11-26 12:00:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:04,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:04,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:00:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:00:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:00:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:00:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 12:00:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 12:00:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:00:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:04,716 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:04,932 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:04,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:05,602 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:05,672 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:05,673 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-26 12:00:05,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:05 BoogieIcfgContainer [2023-11-26 12:00:05,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:05,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:05,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:05,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:05,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:03" (1/3) ... [2023-11-26 12:00:05,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f95c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:05, skipping insertion in model container [2023-11-26 12:00:05,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:04" (2/3) ... [2023-11-26 12:00:05,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f95c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:05, skipping insertion in model container [2023-11-26 12:00:05,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:05" (3/3) ... [2023-11-26 12:00:05,698 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-11-26 12:00:05,716 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:05,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:05,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 12:00:05,729 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:05,848 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 12:00:05,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 290 transitions, 587 flow [2023-11-26 12:00:06,057 INFO L124 PetriNetUnfolderBase]: 48/413 cut-off events. [2023-11-26 12:00:06,057 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:00:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 413 events. 48/413 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1763 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2023-11-26 12:00:06,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 290 transitions, 587 flow [2023-11-26 12:00:06,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 290 transitions, 587 flow [2023-11-26 12:00:06,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:06,100 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;@7fa07dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:06,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 12:00:06,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:06,125 INFO L124 PetriNetUnfolderBase]: 12/123 cut-off events. [2023-11-26 12:00:06,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:00:06,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:06,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:06,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 12:00:06,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2042058286, now seen corresponding path program 1 times [2023-11-26 12:00:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:06,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469893043] [2023-11-26 12:00:06,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469893043] [2023-11-26 12:00:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469893043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:06,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:06,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343657789] [2023-11-26 12:00:06,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:06,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:06,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:06,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 290 [2023-11-26 12:00:06,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 290 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:06,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:06,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 290 [2023-11-26 12:00:06,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:07,051 INFO L124 PetriNetUnfolderBase]: 85/1237 cut-off events. [2023-11-26 12:00:07,052 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 12:00:07,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 1237 events. 85/1237 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8302 event pairs, 72 based on Foata normal form. 209/1336 useless extension candidates. Maximal degree in co-relation 1242. Up to 178 conditions per place. [2023-11-26 12:00:07,067 INFO L140 encePairwiseOnDemand]: 258/290 looper letters, 23 selfloop transitions, 2 changer transitions 1/256 dead transitions. [2023-11-26 12:00:07,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 569 flow [2023-11-26 12:00:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-11-26 12:00:07,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8747126436781609 [2023-11-26 12:00:07,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-11-26 12:00:07,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-11-26 12:00:07,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:07,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-11-26 12:00:07,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,115 INFO L175 Difference]: Start difference. First operand has 260 places, 290 transitions, 587 flow. Second operand 3 states and 761 transitions. [2023-11-26 12:00:07,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 569 flow [2023-11-26 12:00:07,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 256 transitions, 569 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:07,128 INFO L231 Difference]: Finished difference. Result has 257 places, 255 transitions, 527 flow [2023-11-26 12:00:07,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=527, PETRI_PLACES=257, PETRI_TRANSITIONS=255} [2023-11-26 12:00:07,135 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, -3 predicate places. [2023-11-26 12:00:07,135 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 255 transitions, 527 flow [2023-11-26 12:00:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:07,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:07,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:07,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 12:00:07,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1433501784, now seen corresponding path program 1 times [2023-11-26 12:00:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:07,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917998176] [2023-11-26 12:00:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917998176] [2023-11-26 12:00:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917998176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726954731] [2023-11-26 12:00:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:07,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:07,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:07,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:07,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:00:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:07,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:07,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:07,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726954731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:07,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:07,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:00:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202340823] [2023-11-26 12:00:07,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:07,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:07,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:07,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-26 12:00:07,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 255 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 233.9) internal successors, (2339), 10 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:07,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:07,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-26 12:00:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:08,105 INFO L124 PetriNetUnfolderBase]: 85/1243 cut-off events. [2023-11-26 12:00:08,106 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 12:00:08,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1446 conditions, 1243 events. 85/1243 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8307 event pairs, 72 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 1410. Up to 178 conditions per place. [2023-11-26 12:00:08,116 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 27 selfloop transitions, 9 changer transitions 0/263 dead transitions. [2023-11-26 12:00:08,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 617 flow [2023-11-26 12:00:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:08,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2126 transitions. [2023-11-26 12:00:08,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8145593869731801 [2023-11-26 12:00:08,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2126 transitions. [2023-11-26 12:00:08,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2126 transitions. [2023-11-26 12:00:08,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:08,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2126 transitions. [2023-11-26 12:00:08,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.22222222222223) internal successors, (2126), 9 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 290.0) internal successors, (2900), 10 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 290.0) internal successors, (2900), 10 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,147 INFO L175 Difference]: Start difference. First operand has 257 places, 255 transitions, 527 flow. Second operand 9 states and 2126 transitions. [2023-11-26 12:00:08,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 617 flow [2023-11-26 12:00:08,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 263 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:08,158 INFO L231 Difference]: Finished difference. Result has 266 places, 261 transitions, 575 flow [2023-11-26 12:00:08,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=575, PETRI_PLACES=266, PETRI_TRANSITIONS=261} [2023-11-26 12:00:08,159 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 6 predicate places. [2023-11-26 12:00:08,160 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 261 transitions, 575 flow [2023-11-26 12:00:08,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 233.9) internal successors, (2339), 10 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:08,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:08,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:08,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:08,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 12:00:08,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1623187944, now seen corresponding path program 2 times [2023-11-26 12:00:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883700317] [2023-11-26 12:00:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:08,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883700317] [2023-11-26 12:00:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883700317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119049150] [2023-11-26 12:00:08,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:08,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:08,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:08,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:00:08,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:08,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:08,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:08,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:08,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119049150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:08,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 12:00:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039250333] [2023-11-26 12:00:08,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:00:08,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:00:08,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:00:08,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-26 12:00:08,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 261 transitions, 575 flow. Second operand has 18 states, 18 states have (on average 233.94444444444446) internal successors, (4211), 18 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:08,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:08,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-26 12:00:08,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:09,501 INFO L124 PetriNetUnfolderBase]: 85/1263 cut-off events. [2023-11-26 12:00:09,501 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-26 12:00:09,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1263 events. 85/1263 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8363 event pairs, 72 based on Foata normal form. 4/1158 useless extension candidates. Maximal degree in co-relation 1388. Up to 178 conditions per place. [2023-11-26 12:00:09,513 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 31 selfloop transitions, 21 changer transitions 0/279 dead transitions. [2023-11-26 12:00:09,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 279 transitions, 775 flow [2023-11-26 12:00:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 12:00:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 12:00:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4928 transitions. [2023-11-26 12:00:09,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8091954022988506 [2023-11-26 12:00:09,530 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4928 transitions. [2023-11-26 12:00:09,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4928 transitions. [2023-11-26 12:00:09,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:09,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4928 transitions. [2023-11-26 12:00:09,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 234.66666666666666) internal successors, (4928), 21 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,571 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,572 INFO L175 Difference]: Start difference. First operand has 266 places, 261 transitions, 575 flow. Second operand 21 states and 4928 transitions. [2023-11-26 12:00:09,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 279 transitions, 775 flow [2023-11-26 12:00:09,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 761 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:09,583 INFO L231 Difference]: Finished difference. Result has 290 places, 274 transitions, 699 flow [2023-11-26 12:00:09,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=699, PETRI_PLACES=290, PETRI_TRANSITIONS=274} [2023-11-26 12:00:09,586 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 30 predicate places. [2023-11-26 12:00:09,586 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 274 transitions, 699 flow [2023-11-26 12:00:09,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 233.94444444444446) internal successors, (4211), 18 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:09,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:09,590 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:09,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:09,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:09,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 12:00:09,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:09,797 INFO L85 PathProgramCache]: Analyzing trace with hash -80398744, now seen corresponding path program 3 times [2023-11-26 12:00:09,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:09,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841591629] [2023-11-26 12:00:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:10,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841591629] [2023-11-26 12:00:10,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841591629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:10,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055376138] [2023-11-26 12:00:10,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:00:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:10,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:10,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:00:10,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 12:00:10,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:10,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:10,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:10,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 12:00:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055376138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:10,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 12:00:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925216962] [2023-11-26 12:00:10,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 12:00:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 12:00:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 12:00:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 290 [2023-11-26 12:00:10,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 274 transitions, 699 flow. Second operand has 23 states, 23 states have (on average 234.04347826086956) internal successors, (5383), 23 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:10,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:10,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 290 [2023-11-26 12:00:10,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:11,498 INFO L124 PetriNetUnfolderBase]: 85/1278 cut-off events. [2023-11-26 12:00:11,499 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-26 12:00:11,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 1278 events. 85/1278 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8294 event pairs, 72 based on Foata normal form. 3/1172 useless extension candidates. Maximal degree in co-relation 1392. Up to 178 conditions per place. [2023-11-26 12:00:11,509 INFO L140 encePairwiseOnDemand]: 284/290 looper letters, 34 selfloop transitions, 30 changer transitions 0/291 dead transitions. [2023-11-26 12:00:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 291 transitions, 955 flow [2023-11-26 12:00:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 12:00:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 12:00:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7027 transitions. [2023-11-26 12:00:11,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8077011494252874 [2023-11-26 12:00:11,530 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7027 transitions. [2023-11-26 12:00:11,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7027 transitions. [2023-11-26 12:00:11,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:11,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7027 transitions. [2023-11-26 12:00:11,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.23333333333332) internal successors, (7027), 30 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 290.0) internal successors, (8990), 31 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,580 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 290.0) internal successors, (8990), 31 states have internal predecessors, (8990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,580 INFO L175 Difference]: Start difference. First operand has 290 places, 274 transitions, 699 flow. Second operand 30 states and 7027 transitions. [2023-11-26 12:00:11,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 291 transitions, 955 flow [2023-11-26 12:00:11,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 291 transitions, 925 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:11,591 INFO L231 Difference]: Finished difference. Result has 317 places, 284 transitions, 827 flow [2023-11-26 12:00:11,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=827, PETRI_PLACES=317, PETRI_TRANSITIONS=284} [2023-11-26 12:00:11,592 INFO L281 CegarLoopForPetriNet]: 260 programPoint places, 57 predicate places. [2023-11-26 12:00:11,592 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 284 transitions, 827 flow [2023-11-26 12:00:11,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 234.04347826086956) internal successors, (5383), 23 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:11,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:11,595 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:11,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:11,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:11,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-26 12:00:11,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -417212782, now seen corresponding path program 4 times [2023-11-26 12:00:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599896185] [2023-11-26 12:00:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:11,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:00:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:11,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:00:11,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:00:11,910 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 12:00:11,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-26 12:00:11,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-26 12:00:11,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-26 12:00:11,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-26 12:00:11,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-26 12:00:11,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-26 12:00:11,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-26 12:00:11,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-26 12:00:11,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-26 12:00:11,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-26 12:00:11,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-26 12:00:11,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:11,916 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-26 12:00:11,918 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:00:11,918 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:00:11,988 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 12:00:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 406 transitions, 828 flow [2023-11-26 12:00:12,164 INFO L124 PetriNetUnfolderBase]: 80/684 cut-off events. [2023-11-26 12:00:12,164 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 12:00:12,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 684 events. 80/684 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3572 event pairs, 0 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 415. Up to 12 conditions per place. [2023-11-26 12:00:12,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 406 transitions, 828 flow [2023-11-26 12:00:12,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 406 transitions, 828 flow [2023-11-26 12:00:12,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:12,192 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;@7fa07dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:12,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-26 12:00:12,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:12,205 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-26 12:00:12,205 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:00:12,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:12,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:12,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:12,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1896306959, now seen corresponding path program 1 times [2023-11-26 12:00:12,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:12,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38088869] [2023-11-26 12:00:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:12,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:12,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38088869] [2023-11-26 12:00:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38088869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900265241] [2023-11-26 12:00:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:12,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 406 [2023-11-26 12:00:12,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 406 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:12,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:12,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 406 [2023-11-26 12:00:12,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:15,202 INFO L124 PetriNetUnfolderBase]: 1577/11962 cut-off events. [2023-11-26 12:00:15,202 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-26 12:00:15,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14423 conditions, 11962 events. 1577/11962 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 145211 event pairs, 1464 based on Foata normal form. 2910/13847 useless extension candidates. Maximal degree in co-relation 1621. Up to 2408 conditions per place. [2023-11-26 12:00:15,361 INFO L140 encePairwiseOnDemand]: 361/406 looper letters, 33 selfloop transitions, 2 changer transitions 1/356 dead transitions. [2023-11-26 12:00:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 356 transitions, 798 flow [2023-11-26 12:00:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1060 transitions. [2023-11-26 12:00:15,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8702791461412152 [2023-11-26 12:00:15,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1060 transitions. [2023-11-26 12:00:15,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1060 transitions. [2023-11-26 12:00:15,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:15,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1060 transitions. [2023-11-26 12:00:15,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:15,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:15,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:15,374 INFO L175 Difference]: Start difference. First operand has 363 places, 406 transitions, 828 flow. Second operand 3 states and 1060 transitions. [2023-11-26 12:00:15,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 356 transitions, 798 flow [2023-11-26 12:00:15,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 356 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:15,385 INFO L231 Difference]: Finished difference. Result has 357 places, 355 transitions, 736 flow [2023-11-26 12:00:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=357, PETRI_TRANSITIONS=355} [2023-11-26 12:00:15,389 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, -6 predicate places. [2023-11-26 12:00:15,389 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 355 transitions, 736 flow [2023-11-26 12:00:15,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:15,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:15,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:15,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:15,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1784823725, now seen corresponding path program 1 times [2023-11-26 12:00:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595705260] [2023-11-26 12:00:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:15,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595705260] [2023-11-26 12:00:15,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595705260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:15,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581498068] [2023-11-26 12:00:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:15,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:15,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:15,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:00:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:15,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:00:15,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:00:15,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:00:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581498068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:00:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 12:00:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993798495] [2023-11-26 12:00:15,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:15,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 406 [2023-11-26 12:00:15,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 355 transitions, 736 flow. Second operand has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:15,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:15,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 406 [2023-11-26 12:00:15,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:18,472 INFO L124 PetriNetUnfolderBase]: 2031/13043 cut-off events. [2023-11-26 12:00:18,472 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-26 12:00:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16225 conditions, 13043 events. 2031/13043 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 160744 event pairs, 880 based on Foata normal form. 1/11887 useless extension candidates. Maximal degree in co-relation 16192. Up to 3113 conditions per place. [2023-11-26 12:00:18,584 INFO L140 encePairwiseOnDemand]: 403/406 looper letters, 41 selfloop transitions, 2 changer transitions 0/364 dead transitions. [2023-11-26 12:00:18,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 364 transitions, 840 flow [2023-11-26 12:00:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2023-11-26 12:00:18,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8415435139573071 [2023-11-26 12:00:18,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2023-11-26 12:00:18,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2023-11-26 12:00:18,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:18,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2023-11-26 12:00:18,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 406.0) internal successors, (1624), 4 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,596 INFO L175 Difference]: Start difference. First operand has 357 places, 355 transitions, 736 flow. Second operand 3 states and 1025 transitions. [2023-11-26 12:00:18,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 364 transitions, 840 flow [2023-11-26 12:00:18,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 364 transitions, 838 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:18,606 INFO L231 Difference]: Finished difference. Result has 358 places, 356 transitions, 746 flow [2023-11-26 12:00:18,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=358, PETRI_TRANSITIONS=356} [2023-11-26 12:00:18,608 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, -5 predicate places. [2023-11-26 12:00:18,608 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 356 transitions, 746 flow [2023-11-26 12:00:18,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 3 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:18,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:18,609 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:18,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:18,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:18,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:18,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -892199690, now seen corresponding path program 1 times [2023-11-26 12:00:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727023895] [2023-11-26 12:00:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:18,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727023895] [2023-11-26 12:00:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727023895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676365968] [2023-11-26 12:00:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:18,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:18,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:00:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:19,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:00:19,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:19,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676365968] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:19,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:00:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430987042] [2023-11-26 12:00:19,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:00:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:00:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:00:19,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-26 12:00:19,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 356 transitions, 746 flow. Second operand has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:19,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:19,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-26 12:00:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:21,172 INFO L124 PetriNetUnfolderBase]: 1575/11882 cut-off events. [2023-11-26 12:00:21,172 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-26 12:00:21,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 11882 events. 1575/11882 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144717 event pairs, 1464 based on Foata normal form. 2/10878 useless extension candidates. Maximal degree in co-relation 14312. Up to 2400 conditions per place. [2023-11-26 12:00:21,396 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 37 selfloop transitions, 9 changer transitions 0/364 dead transitions. [2023-11-26 12:00:21,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 364 transitions, 856 flow [2023-11-26 12:00:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:00:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2964 transitions. [2023-11-26 12:00:21,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111658456486043 [2023-11-26 12:00:21,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2964 transitions. [2023-11-26 12:00:21,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2964 transitions. [2023-11-26 12:00:21,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:21,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2964 transitions. [2023-11-26 12:00:21,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 329.3333333333333) internal successors, (2964), 9 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:21,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 406.0) internal successors, (4060), 10 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:21,435 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 406.0) internal successors, (4060), 10 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:21,435 INFO L175 Difference]: Start difference. First operand has 358 places, 356 transitions, 746 flow. Second operand 9 states and 2964 transitions. [2023-11-26 12:00:21,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 364 transitions, 856 flow [2023-11-26 12:00:21,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 364 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:21,446 INFO L231 Difference]: Finished difference. Result has 368 places, 362 transitions, 794 flow [2023-11-26 12:00:21,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=368, PETRI_TRANSITIONS=362} [2023-11-26 12:00:21,448 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 5 predicate places. [2023-11-26 12:00:21,449 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 362 transitions, 794 flow [2023-11-26 12:00:21,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.0) internal successors, (3260), 10 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:21,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:21,451 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:21,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 12:00:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:21,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:21,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1030281590, now seen corresponding path program 2 times [2023-11-26 12:00:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971621240] [2023-11-26 12:00:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971621240] [2023-11-26 12:00:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971621240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:21,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473675671] [2023-11-26 12:00:21,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:21,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:21,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:21,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:21,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:00:21,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:21,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:21,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:00:21,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:22,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:22,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473675671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:22,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-26 12:00:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706961617] [2023-11-26 12:00:22,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 12:00:22,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 12:00:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 12:00:22,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-26 12:00:22,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 362 transitions, 794 flow. Second operand has 18 states, 18 states have (on average 326.0) internal successors, (5868), 18 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:22,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:22,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-26 12:00:22,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:24,672 INFO L124 PetriNetUnfolderBase]: 1575/11902 cut-off events. [2023-11-26 12:00:24,673 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-26 12:00:24,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14461 conditions, 11902 events. 1575/11902 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144696 event pairs, 1464 based on Foata normal form. 4/10900 useless extension candidates. Maximal degree in co-relation 14316. Up to 2400 conditions per place. [2023-11-26 12:00:24,765 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 41 selfloop transitions, 21 changer transitions 0/380 dead transitions. [2023-11-26 12:00:24,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 380 transitions, 1014 flow [2023-11-26 12:00:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 12:00:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 12:00:24,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6870 transitions. [2023-11-26 12:00:24,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8057705840957072 [2023-11-26 12:00:24,787 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6870 transitions. [2023-11-26 12:00:24,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6870 transitions. [2023-11-26 12:00:24,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:24,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6870 transitions. [2023-11-26 12:00:24,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 327.14285714285717) internal successors, (6870), 21 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 406.0) internal successors, (8932), 22 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,831 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 406.0) internal successors, (8932), 22 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,831 INFO L175 Difference]: Start difference. First operand has 368 places, 362 transitions, 794 flow. Second operand 21 states and 6870 transitions. [2023-11-26 12:00:24,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 380 transitions, 1014 flow [2023-11-26 12:00:24,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 380 transitions, 1000 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:24,842 INFO L231 Difference]: Finished difference. Result has 392 places, 375 transitions, 918 flow [2023-11-26 12:00:24,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=918, PETRI_PLACES=392, PETRI_TRANSITIONS=375} [2023-11-26 12:00:24,844 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 29 predicate places. [2023-11-26 12:00:24,844 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 375 transitions, 918 flow [2023-11-26 12:00:24,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 326.0) internal successors, (5868), 18 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:24,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:24,846 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:24,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:25,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:25,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:25,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1048146550, now seen corresponding path program 3 times [2023-11-26 12:00:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:25,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039439126] [2023-11-26 12:00:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:25,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039439126] [2023-11-26 12:00:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039439126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353514114] [2023-11-26 12:00:25,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 12:00:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:25,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:25,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:00:25,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-26 12:00:25,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:25,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:25,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:25,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:00:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353514114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:25,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:25,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-26 12:00:25,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74073664] [2023-11-26 12:00:25,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:25,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 12:00:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 12:00:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 12:00:26,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 406 [2023-11-26 12:00:26,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 375 transitions, 918 flow. Second operand has 23 states, 23 states have (on average 326.0869565217391) internal successors, (7500), 23 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:26,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:26,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 406 [2023-11-26 12:00:26,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:28,987 INFO L124 PetriNetUnfolderBase]: 1575/11917 cut-off events. [2023-11-26 12:00:28,988 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-26 12:00:29,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14559 conditions, 11917 events. 1575/11917 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 144737 event pairs, 1464 based on Foata normal form. 3/10914 useless extension candidates. Maximal degree in co-relation 14320. Up to 2400 conditions per place. [2023-11-26 12:00:29,099 INFO L140 encePairwiseOnDemand]: 400/406 looper letters, 44 selfloop transitions, 30 changer transitions 0/392 dead transitions. [2023-11-26 12:00:29,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 392 transitions, 1194 flow [2023-11-26 12:00:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-26 12:00:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-26 12:00:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9797 transitions. [2023-11-26 12:00:29,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.804351395730706 [2023-11-26 12:00:29,122 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9797 transitions. [2023-11-26 12:00:29,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9797 transitions. [2023-11-26 12:00:29,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:29,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9797 transitions. [2023-11-26 12:00:29,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 326.56666666666666) internal successors, (9797), 30 states have internal predecessors, (9797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:29,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 406.0) internal successors, (12586), 31 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:29,183 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 406.0) internal successors, (12586), 31 states have internal predecessors, (12586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:29,183 INFO L175 Difference]: Start difference. First operand has 392 places, 375 transitions, 918 flow. Second operand 30 states and 9797 transitions. [2023-11-26 12:00:29,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 392 transitions, 1194 flow [2023-11-26 12:00:29,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 392 transitions, 1164 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:29,197 INFO L231 Difference]: Finished difference. Result has 419 places, 385 transitions, 1046 flow [2023-11-26 12:00:29,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=406, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=419, PETRI_TRANSITIONS=385} [2023-11-26 12:00:29,199 INFO L281 CegarLoopForPetriNet]: 363 programPoint places, 56 predicate places. [2023-11-26 12:00:29,199 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 385 transitions, 1046 flow [2023-11-26 12:00:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 326.0869565217391) internal successors, (7500), 23 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:29,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:29,202 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:29,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 12:00:29,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1982f9a1-688d-4125-8501-607e5fc8bff7/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:29,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-26 12:00:29,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash 627312522, now seen corresponding path program 4 times [2023-11-26 12:00:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627794438] [2023-11-26 12:00:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:29,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:00:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:00:29,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:00:29,525 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:00:29,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-26 12:00:29,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-26 12:00:29,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-26 12:00:29,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-26 12:00:29,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-26 12:00:29,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-26 12:00:29,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-26 12:00:29,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-26 12:00:29,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-26 12:00:29,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-26 12:00:29,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-26 12:00:29,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-26 12:00:29,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-26 12:00:29,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-26 12:00:29,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-26 12:00:29,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-26 12:00:29,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-26 12:00:29,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-26 12:00:29,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-26 12:00:29,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-26 12:00:29,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-26 12:00:29,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-26 12:00:29,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:00:29,534 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-26 12:00:29,535 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:00:29,535 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:00:29,638 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:00:29,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 522 transitions, 1071 flow [2023-11-26 12:00:30,123 INFO L124 PetriNetUnfolderBase]: 117/1002 cut-off events. [2023-11-26 12:00:30,123 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 12:00:30,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 1002 events. 117/1002 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5811 event pairs, 1 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 692. Up to 16 conditions per place. [2023-11-26 12:00:30,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 522 transitions, 1071 flow [2023-11-26 12:00:30,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 522 transitions, 1071 flow [2023-11-26 12:00:30,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:30,152 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;@7fa07dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:30,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-26 12:00:30,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:30,163 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-26 12:00:30,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:00:30,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:30,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:30,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-26 12:00:30,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1761294095, now seen corresponding path program 1 times [2023-11-26 12:00:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:30,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050214028] [2023-11-26 12:00:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:30,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050214028] [2023-11-26 12:00:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050214028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:30,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:30,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511417732] [2023-11-26 12:00:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:30,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:30,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:30,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 522 [2023-11-26 12:00:30,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 522 transitions, 1071 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:30,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:30,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 522 [2023-11-26 12:00:30,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand