./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU --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 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:19,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:19,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 21:58:19,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:19,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:19,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:19,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:19,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:19,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:19,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:19,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:19,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:19,605 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:19,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:19,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:19,606 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:19,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:19,607 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:19,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:19,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:19,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:19,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:19,609 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 21:58:19,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:19,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:58:19,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:19,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:19,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:19,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:19,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:19,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:19,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:19,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:19,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:19,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:19,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:19,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:19,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:19,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:19,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:19,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:19,616 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_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-10-31 21:58:19,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:19,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:19,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:19,953 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:19,954 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:19,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-complex/safestack_relacy.i Unable to find full path for "g++" [2024-10-31 21:58:22,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:22,463 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:22,463 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-10-31 21:58:22,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/data/bbb709f45/f5f7cf2ab63d4fd6a0f46c439e4f7018/FLAG97b352ed8 [2024-10-31 21:58:22,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/data/bbb709f45/f5f7cf2ab63d4fd6a0f46c439e4f7018 [2024-10-31 21:58:22,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:22,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:22,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:22,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:22,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:22,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:22" (1/1) ... [2024-10-31 21:58:22,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4801db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:22, skipping insertion in model container [2024-10-31 21:58:22,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:22" (1/1) ... [2024-10-31 21:58:22,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:23,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:23,578 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:23,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:23,917 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:23,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23 WrapperNode [2024-10-31 21:58:23,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:23,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:23,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:23,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:23,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:23,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,023 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 325 [2024-10-31 21:58:24,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:24,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:24,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:24,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:24,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:24,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:24,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:24,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:24,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (1/1) ... [2024-10-31 21:58:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:24,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:24,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:24,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 21:58:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-31 21:58:24,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-31 21:58:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:24,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 21:58:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 21:58:24,208 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:58:24,561 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:24,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:25,330 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:58:25,331 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:25,646 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:25,647 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-31 21:58:25,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:25 BoogieIcfgContainer [2024-10-31 21:58:25,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:25,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:25,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:25,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:25,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:22" (1/3) ... [2024-10-31 21:58:25,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dd6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:25, skipping insertion in model container [2024-10-31 21:58:25,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:23" (2/3) ... [2024-10-31 21:58:25,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dd6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:25, skipping insertion in model container [2024-10-31 21:58:25,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:25" (3/3) ... [2024-10-31 21:58:25,661 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-10-31 21:58:25,681 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:25,681 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-31 21:58:25,682 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:58:25,803 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 21:58:25,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 218 transitions, 443 flow [2024-10-31 21:58:25,991 INFO L124 PetriNetUnfolderBase]: 19/246 cut-off events. [2024-10-31 21:58:25,991 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 21:58:26,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 246 events. 19/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 598 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 161. Up to 4 conditions per place. [2024-10-31 21:58:26,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 218 transitions, 443 flow [2024-10-31 21:58:26,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 218 transitions, 443 flow [2024-10-31 21:58:26,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:26,036 INFO L333 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, 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;@354985e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:26,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-10-31 21:58:26,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:26,044 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-10-31 21:58:26,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:26,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:26,045 INFO L204 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] [2024-10-31 21:58:26,046 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:26,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash 963327788, now seen corresponding path program 1 times [2024-10-31 21:58:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:26,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794122903] [2024-10-31 21:58:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794122903] [2024-10-31 21:58:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794122903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:26,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:26,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046448419] [2024-10-31 21:58:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:26,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 21:58:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 21:58:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 21:58:26,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 218 [2024-10-31 21:58:26,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 218 transitions, 443 flow. Second operand has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:26,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:26,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 218 [2024-10-31 21:58:26,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:27,141 INFO L124 PetriNetUnfolderBase]: 8/214 cut-off events. [2024-10-31 21:58:27,143 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-10-31 21:58:27,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 214 events. 8/214 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 352 event pairs, 0 based on Foata normal form. 29/225 useless extension candidates. Maximal degree in co-relation 146. Up to 17 conditions per place. [2024-10-31 21:58:27,148 INFO L140 encePairwiseOnDemand]: 189/218 looper letters, 16 selfloop transitions, 0 changer transitions 0/188 dead transitions. [2024-10-31 21:58:27,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 188 transitions, 415 flow [2024-10-31 21:58:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 21:58:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 21:58:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 391 transitions. [2024-10-31 21:58:27,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967889908256881 [2024-10-31 21:58:27,171 INFO L175 Difference]: Start difference. First operand has 204 places, 218 transitions, 443 flow. Second operand 2 states and 391 transitions. [2024-10-31 21:58:27,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 188 transitions, 415 flow [2024-10-31 21:58:27,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 188 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:27,181 INFO L231 Difference]: Finished difference. Result has 184 places, 188 transitions, 383 flow [2024-10-31 21:58:27,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=383, PETRI_PLACES=184, PETRI_TRANSITIONS=188} [2024-10-31 21:58:27,190 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -20 predicate places. [2024-10-31 21:58:27,190 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 188 transitions, 383 flow [2024-10-31 21:58:27,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:27,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:27,193 INFO L204 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] [2024-10-31 21:58:27,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:27,194 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:27,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -563881037, now seen corresponding path program 1 times [2024-10-31 21:58:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:27,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021026659] [2024-10-31 21:58:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021026659] [2024-10-31 21:58:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021026659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278234634] [2024-10-31 21:58:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:27,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:27,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 218 [2024-10-31 21:58:27,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 188 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:27,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:27,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 218 [2024-10-31 21:58:27,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:27,741 INFO L124 PetriNetUnfolderBase]: 8/219 cut-off events. [2024-10-31 21:58:27,742 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2024-10-31 21:58:27,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 219 events. 8/219 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 350 event pairs, 0 based on Foata normal form. 1/203 useless extension candidates. Maximal degree in co-relation 249. Up to 14 conditions per place. [2024-10-31 21:58:27,745 INFO L140 encePairwiseOnDemand]: 211/218 looper letters, 21 selfloop transitions, 6 changer transitions 0/190 dead transitions. [2024-10-31 21:58:27,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 190 transitions, 441 flow [2024-10-31 21:58:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2024-10-31 21:58:27,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7779816513761468 [2024-10-31 21:58:27,754 INFO L175 Difference]: Start difference. First operand has 184 places, 188 transitions, 383 flow. Second operand 5 states and 848 transitions. [2024-10-31 21:58:27,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 190 transitions, 441 flow [2024-10-31 21:58:27,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 190 transitions, 441 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:27,762 INFO L231 Difference]: Finished difference. Result has 189 places, 189 transitions, 403 flow [2024-10-31 21:58:27,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=189, PETRI_TRANSITIONS=189} [2024-10-31 21:58:27,763 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -15 predicate places. [2024-10-31 21:58:27,763 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 189 transitions, 403 flow [2024-10-31 21:58:27,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:27,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:27,764 INFO L204 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] [2024-10-31 21:58:27,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:27,765 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:27,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash -145000431, now seen corresponding path program 1 times [2024-10-31 21:58:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397710254] [2024-10-31 21:58:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:58:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397710254] [2024-10-31 21:58:27,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397710254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:27,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:27,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081379637] [2024-10-31 21:58:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:27,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:27,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 218 [2024-10-31 21:58:27,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 189 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:27,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:27,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 218 [2024-10-31 21:58:27,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:28,189 INFO L124 PetriNetUnfolderBase]: 37/482 cut-off events. [2024-10-31 21:58:28,190 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-31 21:58:28,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 482 events. 37/482 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2115 event pairs, 10 based on Foata normal form. 12/457 useless extension candidates. Maximal degree in co-relation 580. Up to 53 conditions per place. [2024-10-31 21:58:28,196 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 29 selfloop transitions, 4 changer transitions 5/199 dead transitions. [2024-10-31 21:58:28,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 199 transitions, 493 flow [2024-10-31 21:58:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2024-10-31 21:58:28,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.808868501529052 [2024-10-31 21:58:28,201 INFO L175 Difference]: Start difference. First operand has 189 places, 189 transitions, 403 flow. Second operand 3 states and 529 transitions. [2024-10-31 21:58:28,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 199 transitions, 493 flow [2024-10-31 21:58:28,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 199 transitions, 483 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:28,207 INFO L231 Difference]: Finished difference. Result has 189 places, 184 transitions, 397 flow [2024-10-31 21:58:28,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=189, PETRI_TRANSITIONS=184} [2024-10-31 21:58:28,208 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -15 predicate places. [2024-10-31 21:58:28,209 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 184 transitions, 397 flow [2024-10-31 21:58:28,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:28,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:28,210 INFO L204 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, 1] [2024-10-31 21:58:28,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:28,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:28,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash 121390155, now seen corresponding path program 1 times [2024-10-31 21:58:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:28,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945805449] [2024-10-31 21:58:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945805449] [2024-10-31 21:58:28,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945805449] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:28,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356444636] [2024-10-31 21:58:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:28,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:28,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:28,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:28,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:28,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:28,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:28,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356444636] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:29,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-31 21:58:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344065675] [2024-10-31 21:58:29,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:29,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:58:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:58:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:58:29,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 218 [2024-10-31 21:58:29,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 184 transitions, 397 flow. Second operand has 15 states, 15 states have (on average 163.4) internal successors, (2451), 15 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:29,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:29,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 218 [2024-10-31 21:58:29,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:29,456 INFO L124 PetriNetUnfolderBase]: 7/209 cut-off events. [2024-10-31 21:58:29,456 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-10-31 21:58:29,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 209 events. 7/209 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 1/197 useless extension candidates. Maximal degree in co-relation 257. Up to 14 conditions per place. [2024-10-31 21:58:29,458 INFO L140 encePairwiseOnDemand]: 208/218 looper letters, 24 selfloop transitions, 10 changer transitions 0/189 dead transitions. [2024-10-31 21:58:29,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 189 transitions, 475 flow [2024-10-31 21:58:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:58:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:58:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1323 transitions. [2024-10-31 21:58:29,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7586009174311926 [2024-10-31 21:58:29,483 INFO L175 Difference]: Start difference. First operand has 189 places, 184 transitions, 397 flow. Second operand 8 states and 1323 transitions. [2024-10-31 21:58:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 189 transitions, 475 flow [2024-10-31 21:58:29,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 189 transitions, 467 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:29,489 INFO L231 Difference]: Finished difference. Result has 193 places, 187 transitions, 435 flow [2024-10-31 21:58:29,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=193, PETRI_TRANSITIONS=187} [2024-10-31 21:58:29,491 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -11 predicate places. [2024-10-31 21:58:29,491 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 187 transitions, 435 flow [2024-10-31 21:58:29,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.4) internal successors, (2451), 15 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:29,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:29,494 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:29,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:58:29,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:29,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:29,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1771331027, now seen corresponding path program 2 times [2024-10-31 21:58:29,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:29,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146006773] [2024-10-31 21:58:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:30,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:30,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146006773] [2024-10-31 21:58:30,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146006773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:30,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:30,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107718867] [2024-10-31 21:58:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:30,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:30,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:30,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 218 [2024-10-31 21:58:30,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 187 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 218 [2024-10-31 21:58:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:31,617 INFO L124 PetriNetUnfolderBase]: 415/1862 cut-off events. [2024-10-31 21:58:31,617 INFO L125 PetriNetUnfolderBase]: For 25/35 co-relation queries the response was YES. [2024-10-31 21:58:31,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1862 events. 415/1862 cut-off events. For 25/35 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13343 event pairs, 144 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 2705. Up to 668 conditions per place. [2024-10-31 21:58:31,629 INFO L140 encePairwiseOnDemand]: 193/218 looper letters, 43 selfloop transitions, 78 changer transitions 0/264 dead transitions. [2024-10-31 21:58:31,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 264 transitions, 831 flow [2024-10-31 21:58:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 986 transitions. [2024-10-31 21:58:31,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.753822629969419 [2024-10-31 21:58:31,632 INFO L175 Difference]: Start difference. First operand has 193 places, 187 transitions, 435 flow. Second operand 6 states and 986 transitions. [2024-10-31 21:58:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 264 transitions, 831 flow [2024-10-31 21:58:31,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 264 transitions, 821 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:31,639 INFO L231 Difference]: Finished difference. Result has 200 places, 264 transitions, 939 flow [2024-10-31 21:58:31,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=939, PETRI_PLACES=200, PETRI_TRANSITIONS=264} [2024-10-31 21:58:31,640 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -4 predicate places. [2024-10-31 21:58:31,641 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 264 transitions, 939 flow [2024-10-31 21:58:31,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:31,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:31,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:31,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:58:31,642 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:31,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1691696351, now seen corresponding path program 1 times [2024-10-31 21:58:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612636822] [2024-10-31 21:58:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:31,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612636822] [2024-10-31 21:58:31,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612636822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848144519] [2024-10-31 21:58:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:31,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:31,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:31,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:31,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:58:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:32,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:58:32,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:32,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848144519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:32,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-31 21:58:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522144274] [2024-10-31 21:58:32,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:32,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:32,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 218 [2024-10-31 21:58:32,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 264 transitions, 939 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:32,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:32,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 218 [2024-10-31 21:58:32,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:32,577 INFO L124 PetriNetUnfolderBase]: 233/1259 cut-off events. [2024-10-31 21:58:32,578 INFO L125 PetriNetUnfolderBase]: For 317/330 co-relation queries the response was YES. [2024-10-31 21:58:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1259 events. 233/1259 cut-off events. For 317/330 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7970 event pairs, 10 based on Foata normal form. 12/1186 useless extension candidates. Maximal degree in co-relation 2113. Up to 255 conditions per place. [2024-10-31 21:58:32,588 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 70 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-10-31 21:58:32,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 261 transitions, 1094 flow [2024-10-31 21:58:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:58:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 21:58:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 680 transitions. [2024-10-31 21:58:32,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7798165137614679 [2024-10-31 21:58:32,591 INFO L175 Difference]: Start difference. First operand has 200 places, 264 transitions, 939 flow. Second operand 4 states and 680 transitions. [2024-10-31 21:58:32,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 261 transitions, 1094 flow [2024-10-31 21:58:32,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 261 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:32,601 INFO L231 Difference]: Finished difference. Result has 188 places, 249 transitions, 904 flow [2024-10-31 21:58:32,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=904, PETRI_PLACES=188, PETRI_TRANSITIONS=249} [2024-10-31 21:58:32,603 INFO L277 CegarLoopForPetriNet]: 204 programPoint places, -16 predicate places. [2024-10-31 21:58:32,603 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 249 transitions, 904 flow [2024-10-31 21:58:32,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:32,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:32,605 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:32,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:58:32,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:32,806 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-31 21:58:32,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash -847966210, now seen corresponding path program 1 times [2024-10-31 21:58:32,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:32,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838349411] [2024-10-31 21:58:32,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:32,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:32,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:32,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:32,938 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:58:32,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 43 remaining) [2024-10-31 21:58:32,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (41 of 43 remaining) [2024-10-31 21:58:32,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (40 of 43 remaining) [2024-10-31 21:58:32,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (39 of 43 remaining) [2024-10-31 21:58:32,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (38 of 43 remaining) [2024-10-31 21:58:32,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (37 of 43 remaining) [2024-10-31 21:58:32,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (36 of 43 remaining) [2024-10-31 21:58:32,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (35 of 43 remaining) [2024-10-31 21:58:32,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (34 of 43 remaining) [2024-10-31 21:58:32,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (33 of 43 remaining) [2024-10-31 21:58:32,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (32 of 43 remaining) [2024-10-31 21:58:32,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (31 of 43 remaining) [2024-10-31 21:58:32,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (30 of 43 remaining) [2024-10-31 21:58:32,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (29 of 43 remaining) [2024-10-31 21:58:32,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (28 of 43 remaining) [2024-10-31 21:58:32,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (27 of 43 remaining) [2024-10-31 21:58:32,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (26 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (25 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (24 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (23 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (22 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (21 of 43 remaining) [2024-10-31 21:58:32,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (20 of 43 remaining) [2024-10-31 21:58:32,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (19 of 43 remaining) [2024-10-31 21:58:32,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (18 of 43 remaining) [2024-10-31 21:58:32,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (17 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (16 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (15 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (14 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (13 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (12 of 43 remaining) [2024-10-31 21:58:32,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (11 of 43 remaining) [2024-10-31 21:58:32,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (10 of 43 remaining) [2024-10-31 21:58:32,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (9 of 43 remaining) [2024-10-31 21:58:32,955 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (8 of 43 remaining) [2024-10-31 21:58:32,955 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (7 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (6 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (5 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (4 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (3 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (2 of 43 remaining) [2024-10-31 21:58:32,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (1 of 43 remaining) [2024-10-31 21:58:32,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (0 of 43 remaining) [2024-10-31 21:58:32,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:58:32,957 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-10-31 21:58:32,960 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:58:32,960 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 21:58:33,075 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 21:58:33,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 347 transitions, 710 flow [2024-10-31 21:58:33,165 INFO L124 PetriNetUnfolderBase]: 36/433 cut-off events. [2024-10-31 21:58:33,166 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 21:58:33,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 433 events. 36/433 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1580 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 308. Up to 8 conditions per place. [2024-10-31 21:58:33,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 347 transitions, 710 flow [2024-10-31 21:58:33,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 347 transitions, 710 flow [2024-10-31 21:58:33,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:33,181 INFO L333 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, 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;@354985e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:33,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-31 21:58:33,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:33,184 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-10-31 21:58:33,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:58:33,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:33,184 INFO L204 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] [2024-10-31 21:58:33,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1523714375, now seen corresponding path program 1 times [2024-10-31 21:58:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129563714] [2024-10-31 21:58:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:33,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:33,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129563714] [2024-10-31 21:58:33,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129563714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:33,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:33,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 21:58:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678867752] [2024-10-31 21:58:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:33,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 21:58:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 21:58:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 21:58:33,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 347 [2024-10-31 21:58:33,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 347 transitions, 710 flow. Second operand has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:33,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:33,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 347 [2024-10-31 21:58:33,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:33,958 INFO L124 PetriNetUnfolderBase]: 236/1830 cut-off events. [2024-10-31 21:58:33,958 INFO L125 PetriNetUnfolderBase]: For 147/154 co-relation queries the response was YES. [2024-10-31 21:58:33,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 1830 events. 236/1830 cut-off events. For 147/154 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13687 event pairs, 130 based on Foata normal form. 394/2061 useless extension candidates. Maximal degree in co-relation 1784. Up to 316 conditions per place. [2024-10-31 21:58:33,984 INFO L140 encePairwiseOnDemand]: 296/347 looper letters, 28 selfloop transitions, 0 changer transitions 0/294 dead transitions. [2024-10-31 21:58:33,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 294 transitions, 660 flow [2024-10-31 21:58:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 21:58:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 21:58:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 615 transitions. [2024-10-31 21:58:33,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8861671469740634 [2024-10-31 21:58:33,987 INFO L175 Difference]: Start difference. First operand has 322 places, 347 transitions, 710 flow. Second operand 2 states and 615 transitions. [2024-10-31 21:58:33,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 294 transitions, 660 flow [2024-10-31 21:58:33,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 294 transitions, 660 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:33,993 INFO L231 Difference]: Finished difference. Result has 285 places, 294 transitions, 604 flow [2024-10-31 21:58:33,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=604, PETRI_PLACES=285, PETRI_TRANSITIONS=294} [2024-10-31 21:58:33,995 INFO L277 CegarLoopForPetriNet]: 322 programPoint places, -37 predicate places. [2024-10-31 21:58:33,996 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 294 transitions, 604 flow [2024-10-31 21:58:33,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 268.5) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:33,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:33,997 INFO L204 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] [2024-10-31 21:58:33,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:58:33,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:33,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:33,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2085286733, now seen corresponding path program 1 times [2024-10-31 21:58:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027136187] [2024-10-31 21:58:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:34,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:34,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027136187] [2024-10-31 21:58:34,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027136187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:34,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:34,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:34,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6742013] [2024-10-31 21:58:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:34,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:34,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:34,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 347 [2024-10-31 21:58:34,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 294 transitions, 604 flow. Second operand has 5 states, 5 states have (on average 261.2) internal successors, (1306), 5 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:34,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:34,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 347 [2024-10-31 21:58:34,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:34,767 INFO L124 PetriNetUnfolderBase]: 236/1835 cut-off events. [2024-10-31 21:58:34,767 INFO L125 PetriNetUnfolderBase]: For 146/153 co-relation queries the response was YES. [2024-10-31 21:58:34,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 1835 events. 236/1835 cut-off events. For 146/153 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13685 event pairs, 130 based on Foata normal form. 1/1674 useless extension candidates. Maximal degree in co-relation 2232. Up to 313 conditions per place. [2024-10-31 21:58:34,798 INFO L140 encePairwiseOnDemand]: 340/347 looper letters, 33 selfloop transitions, 6 changer transitions 0/296 dead transitions. [2024-10-31 21:58:34,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 296 transitions, 686 flow [2024-10-31 21:58:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1335 transitions. [2024-10-31 21:58:34,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7694524495677233 [2024-10-31 21:58:34,802 INFO L175 Difference]: Start difference. First operand has 285 places, 294 transitions, 604 flow. Second operand 5 states and 1335 transitions. [2024-10-31 21:58:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 296 transitions, 686 flow [2024-10-31 21:58:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 296 transitions, 686 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:34,808 INFO L231 Difference]: Finished difference. Result has 290 places, 295 transitions, 624 flow [2024-10-31 21:58:34,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=290, PETRI_TRANSITIONS=295} [2024-10-31 21:58:34,809 INFO L277 CegarLoopForPetriNet]: 322 programPoint places, -32 predicate places. [2024-10-31 21:58:34,809 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 295 transitions, 624 flow [2024-10-31 21:58:34,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.2) internal successors, (1306), 5 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:34,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:34,810 INFO L204 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] [2024-10-31 21:58:34,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:58:34,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:34,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 287466289, now seen corresponding path program 1 times [2024-10-31 21:58:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823416936] [2024-10-31 21:58:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:58:34,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823416936] [2024-10-31 21:58:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823416936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:34,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:58:34,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905801201] [2024-10-31 21:58:34,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:34,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:58:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:58:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:58:35,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 347 [2024-10-31 21:58:35,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 295 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:35,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:35,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 347 [2024-10-31 21:58:35,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:36,400 INFO L124 PetriNetUnfolderBase]: 1111/6261 cut-off events. [2024-10-31 21:58:36,400 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-10-31 21:58:36,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7957 conditions, 6261 events. 1111/6261 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 63576 event pairs, 602 based on Foata normal form. 133/5849 useless extension candidates. Maximal degree in co-relation 7950. Up to 1140 conditions per place. [2024-10-31 21:58:36,461 INFO L140 encePairwiseOnDemand]: 341/347 looper letters, 57 selfloop transitions, 4 changer transitions 0/319 dead transitions. [2024-10-31 21:58:36,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 319 transitions, 800 flow [2024-10-31 21:58:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:58:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 21:58:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2024-10-31 21:58:36,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8069164265129684 [2024-10-31 21:58:36,465 INFO L175 Difference]: Start difference. First operand has 290 places, 295 transitions, 624 flow. Second operand 3 states and 840 transitions. [2024-10-31 21:58:36,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 319 transitions, 800 flow [2024-10-31 21:58:36,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 319 transitions, 790 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:36,476 INFO L231 Difference]: Finished difference. Result has 290 places, 297 transitions, 638 flow [2024-10-31 21:58:36,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=290, PETRI_TRANSITIONS=297} [2024-10-31 21:58:36,478 INFO L277 CegarLoopForPetriNet]: 322 programPoint places, -32 predicate places. [2024-10-31 21:58:36,478 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 297 transitions, 638 flow [2024-10-31 21:58:36,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:36,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:36,479 INFO L204 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, 1] [2024-10-31 21:58:36,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:58:36,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:36,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash 642956934, now seen corresponding path program 1 times [2024-10-31 21:58:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:36,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798985111] [2024-10-31 21:58:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:36,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798985111] [2024-10-31 21:58:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798985111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272105280] [2024-10-31 21:58:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:36,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:36,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:36,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:36,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:58:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:36,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:36,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:37,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272105280] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:37,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:37,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-31 21:58:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221486697] [2024-10-31 21:58:37,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:37,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:58:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:37,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:58:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:58:37,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 347 [2024-10-31 21:58:37,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 297 transitions, 638 flow. Second operand has 15 states, 15 states have (on average 258.4) internal successors, (3876), 15 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:37,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 347 [2024-10-31 21:58:37,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:38,001 INFO L124 PetriNetUnfolderBase]: 236/1843 cut-off events. [2024-10-31 21:58:38,002 INFO L125 PetriNetUnfolderBase]: For 154/162 co-relation queries the response was YES. [2024-10-31 21:58:38,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1843 events. 236/1843 cut-off events. For 154/162 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13703 event pairs, 131 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 2273. Up to 315 conditions per place. [2024-10-31 21:58:38,030 INFO L140 encePairwiseOnDemand]: 337/347 looper letters, 36 selfloop transitions, 10 changer transitions 0/302 dead transitions. [2024-10-31 21:58:38,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 302 transitions, 740 flow [2024-10-31 21:58:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:58:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:58:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2095 transitions. [2024-10-31 21:58:38,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7546829971181557 [2024-10-31 21:58:38,037 INFO L175 Difference]: Start difference. First operand has 290 places, 297 transitions, 638 flow. Second operand 8 states and 2095 transitions. [2024-10-31 21:58:38,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 302 transitions, 740 flow [2024-10-31 21:58:38,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:38,045 INFO L231 Difference]: Finished difference. Result has 300 places, 300 transitions, 680 flow [2024-10-31 21:58:38,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=680, PETRI_PLACES=300, PETRI_TRANSITIONS=300} [2024-10-31 21:58:38,046 INFO L277 CegarLoopForPetriNet]: 322 programPoint places, -22 predicate places. [2024-10-31 21:58:38,047 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 300 transitions, 680 flow [2024-10-31 21:58:38,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 258.4) internal successors, (3876), 15 states have internal predecessors, (3876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:38,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:38,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:38,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:38,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:38,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:38,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash -634601912, now seen corresponding path program 2 times [2024-10-31 21:58:38,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174977882] [2024-10-31 21:58:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:38,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174977882] [2024-10-31 21:58:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174977882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:38,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437486276] [2024-10-31 21:58:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:38,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:39,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 347 [2024-10-31 21:58:39,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 300 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:39,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:39,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 347 [2024-10-31 21:58:39,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:49,384 INFO L124 PetriNetUnfolderBase]: 16735/48398 cut-off events. [2024-10-31 21:58:49,384 INFO L125 PetriNetUnfolderBase]: For 1363/1655 co-relation queries the response was YES. [2024-10-31 21:58:49,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73830 conditions, 48398 events. 16735/48398 cut-off events. For 1363/1655 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 591435 event pairs, 8854 based on Foata normal form. 0/44463 useless extension candidates. Maximal degree in co-relation 73818. Up to 21997 conditions per place. [2024-10-31 21:58:49,819 INFO L140 encePairwiseOnDemand]: 304/347 looper letters, 67 selfloop transitions, 150 changer transitions 0/450 dead transitions. [2024-10-31 21:58:49,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 450 transitions, 1419 flow [2024-10-31 21:58:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2024-10-31 21:58:49,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7694524495677233 [2024-10-31 21:58:49,825 INFO L175 Difference]: Start difference. First operand has 300 places, 300 transitions, 680 flow. Second operand 6 states and 1602 transitions. [2024-10-31 21:58:49,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 450 transitions, 1419 flow [2024-10-31 21:58:49,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 450 transitions, 1409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:49,848 INFO L231 Difference]: Finished difference. Result has 307 places, 449 transitions, 1652 flow [2024-10-31 21:58:49,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1652, PETRI_PLACES=307, PETRI_TRANSITIONS=449} [2024-10-31 21:58:49,850 INFO L277 CegarLoopForPetriNet]: 322 programPoint places, -15 predicate places. [2024-10-31 21:58:49,851 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 449 transitions, 1652 flow [2024-10-31 21:58:49,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:49,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:49,853 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:49,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:58:49,853 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 58 more)] === [2024-10-31 21:58:49,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2031556061, now seen corresponding path program 1 times [2024-10-31 21:58:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024576383] [2024-10-31 21:58:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:49,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024576383] [2024-10-31 21:58:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024576383] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058454047] [2024-10-31 21:58:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:50,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:50,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:50,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b748e9-e880-4880-8bb3-2338c2832458/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:58:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:50,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:58:50,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:50,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-31 21:58:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058454047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:50,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-31 21:58:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172199865] [2024-10-31 21:58:50,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:50,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:58:50,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:50,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:50,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 347 [2024-10-31 21:58:50,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 449 transitions, 1652 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:50,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:50,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 347 [2024-10-31 21:58:50,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand