./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd --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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:41:59,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:41:59,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 15:41:59,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:41:59,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:41:59,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:41:59,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:41:59,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:41:59,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:41:59,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:41:59,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:41:59,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:41:59,395 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:41:59,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:41:59,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:41:59,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:41:59,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 15:41:59,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:41:59,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:41:59,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:41:59,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:41:59,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:41:59,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:41:59,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:41:59,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:41:59,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:41:59,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:41:59,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:41:59,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:41:59,400 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd 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 -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-13 15:41:59,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:41:59,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:41:59,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:41:59,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:41:59,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:41:59,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i Unable to find full path for "g++" [2024-11-13 15:42:01,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:42:02,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:42:02,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-13 15:42:02,108 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/data/ebcf0c60e/64a38cc0140749a29c278658a73197d1/FLAG34f088f18 [2024-11-13 15:42:02,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/data/ebcf0c60e/64a38cc0140749a29c278658a73197d1 [2024-11-13 15:42:02,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:42:02,202 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:42:02,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:42:02,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:42:02,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:42:02,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:42:02" (1/1) ... [2024-11-13 15:42:02,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3135c352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:02, skipping insertion in model container [2024-11-13 15:42:02,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:42:02" (1/1) ... [2024-11-13 15:42:02,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:42:02,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:42:02,876 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:42:02,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:42:03,032 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:42:03,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03 WrapperNode [2024-11-13 15:42:03,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:42:03,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:42:03,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:42:03,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:42:03,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,110 INFO L138 Inliner]: procedures = 275, calls = 141, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 455 [2024-11-13 15:42:03,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:42:03,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:42:03,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:42:03,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:42:03,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:42:03,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:42:03,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:42:03,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:42:03,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (1/1) ... [2024-11-13 15:42:03,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:42:03,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:03,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:42:03,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:42:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:42:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:42:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 15:42:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:42:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 15:42:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 15:42:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:42:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:42:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 15:42:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 15:42:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 15:42:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:42:03,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:42:03,291 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:42:03,504 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:42:03,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:42:04,464 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:42:04,464 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:42:04,530 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:42:04,530 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-13 15:42:04,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:42:04 BoogieIcfgContainer [2024-11-13 15:42:04,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:42:04,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:42:04,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:42:04,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:42:04,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:42:02" (1/3) ... [2024-11-13 15:42:04,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169737cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:42:04, skipping insertion in model container [2024-11-13 15:42:04,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:42:03" (2/3) ... [2024-11-13 15:42:04,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169737cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:42:04, skipping insertion in model container [2024-11-13 15:42:04,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:42:04" (3/3) ... [2024-11-13 15:42:04,542 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-13 15:42:04,558 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:42:04,560 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_71-funloop_racing.i that has 2 procedures, 430 locations, 1 initial locations, 20 loop locations, and 17 error locations. [2024-11-13 15:42:04,560 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:42:04,714 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-13 15:42:04,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 478 transitions, 963 flow [2024-11-13 15:42:05,105 INFO L124 PetriNetUnfolderBase]: 78/712 cut-off events. [2024-11-13 15:42:05,108 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:42:05,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 712 events. 78/712 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3326 event pairs, 0 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 356. Up to 8 conditions per place. [2024-11-13 15:42:05,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 433 places, 478 transitions, 963 flow [2024-11-13 15:42:05,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 433 places, 478 transitions, 963 flow [2024-11-13 15:42:05,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:42:05,166 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;@418c09f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:42:05,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-13 15:42:05,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:42:05,218 INFO L124 PetriNetUnfolderBase]: 8/164 cut-off events. [2024-11-13 15:42:05,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:42:05,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:05,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:05,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:05,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1539925738, now seen corresponding path program 1 times [2024-11-13 15:42:05,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:05,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347208959] [2024-11-13 15:42:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:05,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:05,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347208959] [2024-11-13 15:42:05,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347208959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:05,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:05,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688078758] [2024-11-13 15:42:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:05,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:05,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 478 [2024-11-13 15:42:05,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 478 transitions, 963 flow. Second operand has 3 states, 3 states have (on average 405.3333333333333) internal successors, (1216), 3 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:05,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:05,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 478 [2024-11-13 15:42:05,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:06,673 INFO L124 PetriNetUnfolderBase]: 161/2199 cut-off events. [2024-11-13 15:42:06,673 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-11-13 15:42:06,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 2199 events. 161/2199 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 17603 event pairs, 120 based on Foata normal form. 381/2395 useless extension candidates. Maximal degree in co-relation 2142. Up to 302 conditions per place. [2024-11-13 15:42:06,693 INFO L140 encePairwiseOnDemand]: 434/478 looper letters, 29 selfloop transitions, 2 changer transitions 0/432 dead transitions. [2024-11-13 15:42:06,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 432 transitions, 933 flow [2024-11-13 15:42:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:42:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2024-11-13 15:42:06,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967921896792189 [2024-11-13 15:42:06,724 INFO L175 Difference]: Start difference. First operand has 433 places, 478 transitions, 963 flow. Second operand 3 states and 1286 transitions. [2024-11-13 15:42:06,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 432 transitions, 933 flow [2024-11-13 15:42:06,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 432 transitions, 933 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:42:06,770 INFO L231 Difference]: Finished difference. Result has 430 places, 432 transitions, 881 flow [2024-11-13 15:42:06,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=881, PETRI_PLACES=430, PETRI_TRANSITIONS=432} [2024-11-13 15:42:06,778 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, -3 predicate places. [2024-11-13 15:42:06,778 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 432 transitions, 881 flow [2024-11-13 15:42:06,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 405.3333333333333) internal successors, (1216), 3 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:06,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:06,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:06,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:42:06,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:06,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1817500153, now seen corresponding path program 1 times [2024-11-13 15:42:06,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:06,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183382539] [2024-11-13 15:42:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183382539] [2024-11-13 15:42:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183382539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444454682] [2024-11-13 15:42:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:07,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:07,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:07,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:42:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:07,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:42:07,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:07,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:07,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444454682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:07,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:07,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 15:42:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588080456] [2024-11-13 15:42:07,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:07,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:42:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:42:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:42:07,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 478 [2024-11-13 15:42:07,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 432 transitions, 881 flow. Second operand has 10 states, 10 states have (on average 402.8) internal successors, (4028), 10 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:07,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:07,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 478 [2024-11-13 15:42:07,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:08,369 INFO L124 PetriNetUnfolderBase]: 161/2206 cut-off events. [2024-11-13 15:42:08,370 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2024-11-13 15:42:08,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 2206 events. 161/2206 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 17621 event pairs, 120 based on Foata normal form. 2/2023 useless extension candidates. Maximal degree in co-relation 2406. Up to 302 conditions per place. [2024-11-13 15:42:08,385 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 33 selfloop transitions, 9 changer transitions 0/440 dead transitions. [2024-11-13 15:42:08,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 440 transitions, 983 flow [2024-11-13 15:42:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:42:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:42:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3653 transitions. [2024-11-13 15:42:08,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8491399349139935 [2024-11-13 15:42:08,400 INFO L175 Difference]: Start difference. First operand has 430 places, 432 transitions, 881 flow. Second operand 9 states and 3653 transitions. [2024-11-13 15:42:08,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 440 transitions, 983 flow [2024-11-13 15:42:08,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 440 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:42:08,413 INFO L231 Difference]: Finished difference. Result has 440 places, 438 transitions, 929 flow [2024-11-13 15:42:08,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=929, PETRI_PLACES=440, PETRI_TRANSITIONS=438} [2024-11-13 15:42:08,414 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, 7 predicate places. [2024-11-13 15:42:08,414 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 438 transitions, 929 flow [2024-11-13 15:42:08,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.8) internal successors, (4028), 10 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:08,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:08,417 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:08,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:42:08,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:08,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:08,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1366069223, now seen corresponding path program 2 times [2024-11-13 15:42:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:08,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618307169] [2024-11-13 15:42:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:08,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:09,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618307169] [2024-11-13 15:42:09,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618307169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:09,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54304288] [2024-11-13 15:42:09,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:42:09,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:09,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:09,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:09,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:42:09,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:42:09,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:09,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:42:09,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:09,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:42:09,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 15:42:09,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:09,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 15:42:09,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:09,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 15:42:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 15:42:09,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:42:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54304288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:09,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:42:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-13 15:42:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180574986] [2024-11-13 15:42:09,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:09,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:42:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:42:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:42:10,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 478 [2024-11-13 15:42:10,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 438 transitions, 929 flow. Second operand has 8 states, 8 states have (on average 332.125) internal successors, (2657), 8 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:10,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:10,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 478 [2024-11-13 15:42:10,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:12,012 INFO L124 PetriNetUnfolderBase]: 2262/8843 cut-off events. [2024-11-13 15:42:12,013 INFO L125 PetriNetUnfolderBase]: For 14/17 co-relation queries the response was YES. [2024-11-13 15:42:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13161 conditions, 8843 events. 2262/8843 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 88397 event pairs, 1876 based on Foata normal form. 1/8029 useless extension candidates. Maximal degree in co-relation 13004. Up to 4099 conditions per place. [2024-11-13 15:42:12,062 INFO L140 encePairwiseOnDemand]: 466/478 looper letters, 160 selfloop transitions, 11 changer transitions 0/506 dead transitions. [2024-11-13 15:42:12,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 506 transitions, 1407 flow [2024-11-13 15:42:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:42:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:42:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2821 transitions. [2024-11-13 15:42:12,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7377092050209205 [2024-11-13 15:42:12,070 INFO L175 Difference]: Start difference. First operand has 440 places, 438 transitions, 929 flow. Second operand 8 states and 2821 transitions. [2024-11-13 15:42:12,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 506 transitions, 1407 flow [2024-11-13 15:42:12,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 506 transitions, 1401 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 15:42:12,080 INFO L231 Difference]: Finished difference. Result has 451 places, 445 transitions, 990 flow [2024-11-13 15:42:12,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=990, PETRI_PLACES=451, PETRI_TRANSITIONS=445} [2024-11-13 15:42:12,081 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, 18 predicate places. [2024-11-13 15:42:12,081 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 445 transitions, 990 flow [2024-11-13 15:42:12,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 332.125) internal successors, (2657), 8 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:12,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:12,084 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:12,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:42:12,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:12,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:12,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash 980266643, now seen corresponding path program 1 times [2024-11-13 15:42:12,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:12,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980959047] [2024-11-13 15:42:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:42:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980959047] [2024-11-13 15:42:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980959047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001039330] [2024-11-13 15:42:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:12,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:12,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:12,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:12,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:42:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:12,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:42:12,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:42:12,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:42:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001039330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:13,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:13,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-13 15:42:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472877071] [2024-11-13 15:42:13,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:13,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:42:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:42:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:42:13,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 478 [2024-11-13 15:42:13,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 445 transitions, 990 flow. Second operand has 18 states, 18 states have (on average 402.94444444444446) internal successors, (7253), 18 states have internal predecessors, (7253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:13,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:13,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 478 [2024-11-13 15:42:13,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:13,795 INFO L124 PetriNetUnfolderBase]: 176/2187 cut-off events. [2024-11-13 15:42:13,795 INFO L125 PetriNetUnfolderBase]: For 34/39 co-relation queries the response was YES. [2024-11-13 15:42:13,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 2187 events. 176/2187 cut-off events. For 34/39 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 17604 event pairs, 122 based on Foata normal form. 4/2010 useless extension candidates. Maximal degree in co-relation 2421. Up to 308 conditions per place. [2024-11-13 15:42:13,811 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 37 selfloop transitions, 21 changer transitions 0/463 dead transitions. [2024-11-13 15:42:13,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 463 transitions, 1194 flow [2024-11-13 15:42:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:42:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 15:42:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8483 transitions. [2024-11-13 15:42:13,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8450886630802948 [2024-11-13 15:42:13,829 INFO L175 Difference]: Start difference. First operand has 451 places, 445 transitions, 990 flow. Second operand 21 states and 8483 transitions. [2024-11-13 15:42:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 463 transitions, 1194 flow [2024-11-13 15:42:13,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 463 transitions, 1187 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:42:13,839 INFO L231 Difference]: Finished difference. Result has 474 places, 458 transitions, 1113 flow [2024-11-13 15:42:13,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1113, PETRI_PLACES=474, PETRI_TRANSITIONS=458} [2024-11-13 15:42:13,840 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, 41 predicate places. [2024-11-13 15:42:13,840 INFO L471 AbstractCegarLoop]: Abstraction has has 474 places, 458 transitions, 1113 flow [2024-11-13 15:42:13,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.94444444444446) internal successors, (7253), 18 states have internal predecessors, (7253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:13,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:13,845 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:13,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:42:14,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:14,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:14,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 67433171, now seen corresponding path program 2 times [2024-11-13 15:42:14,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933412535] [2024-11-13 15:42:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:42:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933412535] [2024-11-13 15:42:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933412535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:14,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819109047] [2024-11-13 15:42:14,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:42:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:14,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:14,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:42:14,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:42:14,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:14,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:42:14,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:14,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 15:42:14,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-13 15:42:14,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:14,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-13 15:42:15,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:15,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-13 15:42:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-13 15:42:15,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:42:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819109047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:15,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:42:15,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-11-13 15:42:15,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556674676] [2024-11-13 15:42:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:15,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:42:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:42:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:42:15,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 478 [2024-11-13 15:42:15,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 458 transitions, 1113 flow. Second operand has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:15,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:15,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 478 [2024-11-13 15:42:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:17,715 INFO L124 PetriNetUnfolderBase]: 2347/9054 cut-off events. [2024-11-13 15:42:17,715 INFO L125 PetriNetUnfolderBase]: For 370/381 co-relation queries the response was YES. [2024-11-13 15:42:17,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14064 conditions, 9054 events. 2347/9054 cut-off events. For 370/381 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 90786 event pairs, 1564 based on Foata normal form. 33/8309 useless extension candidates. Maximal degree in co-relation 13823. Up to 4253 conditions per place. [2024-11-13 15:42:17,782 INFO L140 encePairwiseOnDemand]: 451/478 looper letters, 133 selfloop transitions, 92 changer transitions 0/574 dead transitions. [2024-11-13 15:42:17,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 574 transitions, 1817 flow [2024-11-13 15:42:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:42:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:42:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2212 transitions. [2024-11-13 15:42:17,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7712691771269177 [2024-11-13 15:42:17,788 INFO L175 Difference]: Start difference. First operand has 474 places, 458 transitions, 1113 flow. Second operand 6 states and 2212 transitions. [2024-11-13 15:42:17,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 574 transitions, 1817 flow [2024-11-13 15:42:17,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 574 transitions, 1793 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-13 15:42:17,802 INFO L231 Difference]: Finished difference. Result has 478 places, 542 transitions, 1697 flow [2024-11-13 15:42:17,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1697, PETRI_PLACES=478, PETRI_TRANSITIONS=542} [2024-11-13 15:42:17,804 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, 45 predicate places. [2024-11-13 15:42:17,804 INFO L471 AbstractCegarLoop]: Abstraction has has 478 places, 542 transitions, 1697 flow [2024-11-13 15:42:17,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:17,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:17,806 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:17,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:42:18,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:18,006 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:18,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2090429665, now seen corresponding path program 1 times [2024-11-13 15:42:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:18,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905060999] [2024-11-13 15:42:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:18,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:42:18,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905060999] [2024-11-13 15:42:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905060999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:18,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345369763] [2024-11-13 15:42:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:18,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:18,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:18,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:42:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:18,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:42:18,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:42:19,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:42:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345369763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:19,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:19,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-13 15:42:19,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615442122] [2024-11-13 15:42:19,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:19,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:42:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:42:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:42:19,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 478 [2024-11-13 15:42:19,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 542 transitions, 1697 flow. Second operand has 23 states, 23 states have (on average 403.04347826086956) internal successors, (9270), 23 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:19,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:19,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 478 [2024-11-13 15:42:19,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:20,523 INFO L124 PetriNetUnfolderBase]: 330/2960 cut-off events. [2024-11-13 15:42:20,523 INFO L125 PetriNetUnfolderBase]: For 574/639 co-relation queries the response was YES. [2024-11-13 15:42:20,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 2960 events. 330/2960 cut-off events. For 574/639 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 25861 event pairs, 120 based on Foata normal form. 3/2740 useless extension candidates. Maximal degree in co-relation 4309. Up to 558 conditions per place. [2024-11-13 15:42:20,543 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 40 selfloop transitions, 30 changer transitions 0/559 dead transitions. [2024-11-13 15:42:20,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 559 transitions, 1959 flow [2024-11-13 15:42:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:42:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 15:42:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12103 transitions. [2024-11-13 15:42:20,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.844002789400279 [2024-11-13 15:42:20,565 INFO L175 Difference]: Start difference. First operand has 478 places, 542 transitions, 1697 flow. Second operand 30 states and 12103 transitions. [2024-11-13 15:42:20,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 559 transitions, 1959 flow [2024-11-13 15:42:20,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 559 transitions, 1941 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-13 15:42:20,587 INFO L231 Difference]: Finished difference. Result has 511 places, 552 transitions, 1831 flow [2024-11-13 15:42:20,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1831, PETRI_PLACES=511, PETRI_TRANSITIONS=552} [2024-11-13 15:42:20,590 INFO L277 CegarLoopForPetriNet]: 433 programPoint places, 78 predicate places. [2024-11-13 15:42:20,590 INFO L471 AbstractCegarLoop]: Abstraction has has 511 places, 552 transitions, 1831 flow [2024-11-13 15:42:20,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 403.04347826086956) internal successors, (9270), 23 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:20,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:20,595 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:20,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:42:20,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:20,800 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 15:42:20,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1486085412, now seen corresponding path program 2 times [2024-11-13 15:42:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140190681] [2024-11-13 15:42:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:42:20,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:42:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:42:20,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:42:20,976 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:42:20,977 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-13 15:42:20,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-13 15:42:20,979 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-13 15:42:20,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-13 15:42:20,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-13 15:42:20,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-13 15:42:20,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-13 15:42:20,980 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-13 15:42:20,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-13 15:42:20,982 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-13 15:42:20,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:42:20,983 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-11-13 15:42:20,986 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 15:42:20,987 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 15:42:21,063 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:42:21,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 593 transitions, 1202 flow [2024-11-13 15:42:21,349 INFO L124 PetriNetUnfolderBase]: 126/1089 cut-off events. [2024-11-13 15:42:21,349 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 15:42:21,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 1089 events. 126/1089 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6072 event pairs, 0 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 714. Up to 12 conditions per place. [2024-11-13 15:42:21,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 593 transitions, 1202 flow [2024-11-13 15:42:21,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 534 places, 593 transitions, 1202 flow [2024-11-13 15:42:21,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:42:21,376 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;@418c09f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:42:21,376 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-13 15:42:21,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:42:21,388 INFO L124 PetriNetUnfolderBase]: 8/164 cut-off events. [2024-11-13 15:42:21,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:42:21,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:21,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:21,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-13 15:42:21,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash -465580298, now seen corresponding path program 1 times [2024-11-13 15:42:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623075545] [2024-11-13 15:42:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623075545] [2024-11-13 15:42:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623075545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:42:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:42:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920659646] [2024-11-13 15:42:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:21,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:42:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:42:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:42:21,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 593 [2024-11-13 15:42:21,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 593 transitions, 1202 flow. Second operand has 3 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:21,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:21,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 593 [2024-11-13 15:42:21,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:25,351 INFO L124 PetriNetUnfolderBase]: 2887/20476 cut-off events. [2024-11-13 15:42:25,352 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-13 15:42:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24732 conditions, 20476 events. 2887/20476 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 274525 event pairs, 2376 based on Foata normal form. 5241/24018 useless extension candidates. Maximal degree in co-relation 22020. Up to 4183 conditions per place. [2024-11-13 15:42:25,502 INFO L140 encePairwiseOnDemand]: 536/593 looper letters, 39 selfloop transitions, 2 changer transitions 0/532 dead transitions. [2024-11-13 15:42:25,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 532 transitions, 1162 flow [2024-11-13 15:42:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:42:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:42:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1582 transitions. [2024-11-13 15:42:25,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8892636312535133 [2024-11-13 15:42:25,507 INFO L175 Difference]: Start difference. First operand has 534 places, 593 transitions, 1202 flow. Second operand 3 states and 1582 transitions. [2024-11-13 15:42:25,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 532 transitions, 1162 flow [2024-11-13 15:42:25,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 532 transitions, 1162 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:42:25,520 INFO L231 Difference]: Finished difference. Result has 529 places, 532 transitions, 1090 flow [2024-11-13 15:42:25,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1090, PETRI_PLACES=529, PETRI_TRANSITIONS=532} [2024-11-13 15:42:25,522 INFO L277 CegarLoopForPetriNet]: 534 programPoint places, -5 predicate places. [2024-11-13 15:42:25,522 INFO L471 AbstractCegarLoop]: Abstraction has has 529 places, 532 transitions, 1090 flow [2024-11-13 15:42:25,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 496.3333333333333) internal successors, (1489), 3 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:25,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:25,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:25,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:42:25,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-13 15:42:25,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash -625127894, now seen corresponding path program 1 times [2024-11-13 15:42:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:25,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105337989] [2024-11-13 15:42:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:25,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105337989] [2024-11-13 15:42:25,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105337989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081380264] [2024-11-13 15:42:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:25,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:25,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:25,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:25,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:42:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:25,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:42:25,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:25,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081380264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:25,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 15:42:25,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545269949] [2024-11-13 15:42:25,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:25,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:42:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:42:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:42:25,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 593 [2024-11-13 15:42:25,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 532 transitions, 1090 flow. Second operand has 10 states, 10 states have (on average 493.8) internal successors, (4938), 10 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:25,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:25,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 593 [2024-11-13 15:42:25,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:42:29,672 INFO L124 PetriNetUnfolderBase]: 2887/20483 cut-off events. [2024-11-13 15:42:29,672 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2024-11-13 15:42:29,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24758 conditions, 20483 events. 2887/20483 cut-off events. For 150/154 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 274157 event pairs, 2376 based on Foata normal form. 2/18786 useless extension candidates. Maximal degree in co-relation 24629. Up to 4183 conditions per place. [2024-11-13 15:42:29,998 INFO L140 encePairwiseOnDemand]: 587/593 looper letters, 43 selfloop transitions, 9 changer transitions 0/540 dead transitions. [2024-11-13 15:42:29,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 540 transitions, 1212 flow [2024-11-13 15:42:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:42:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:42:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4482 transitions. [2024-11-13 15:42:30,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8397976391231029 [2024-11-13 15:42:30,006 INFO L175 Difference]: Start difference. First operand has 529 places, 532 transitions, 1090 flow. Second operand 9 states and 4482 transitions. [2024-11-13 15:42:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 540 transitions, 1212 flow [2024-11-13 15:42:30,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 540 transitions, 1210 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:42:30,017 INFO L231 Difference]: Finished difference. Result has 539 places, 538 transitions, 1138 flow [2024-11-13 15:42:30,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=539, PETRI_TRANSITIONS=538} [2024-11-13 15:42:30,020 INFO L277 CegarLoopForPetriNet]: 534 programPoint places, 5 predicate places. [2024-11-13 15:42:30,021 INFO L471 AbstractCegarLoop]: Abstraction has has 539 places, 538 transitions, 1138 flow [2024-11-13 15:42:30,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 493.8) internal successors, (4938), 10 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:30,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:42:30,025 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:42:30,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:30,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-13 15:42:30,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash -336446038, now seen corresponding path program 2 times [2024-11-13 15:42:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:30,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837824631] [2024-11-13 15:42:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837824631] [2024-11-13 15:42:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837824631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029720441] [2024-11-13 15:42:30,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:42:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:30,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:30,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7b4bfb5-b0b0-4431-822a-722c7b37b2d9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:42:30,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:42:30,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:30,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:42:30,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:30,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:42:30,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 15:42:30,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:30,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 15:42:30,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:42:30,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 15:42:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 15:42:30,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:42:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029720441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:42:30,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:42:30,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-13 15:42:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989712415] [2024-11-13 15:42:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:42:30,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:42:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:42:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:42:31,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 593 [2024-11-13 15:42:31,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 538 transitions, 1138 flow. Second operand has 8 states, 8 states have (on average 403.125) internal successors, (3225), 8 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:42:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:42:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 593 [2024-11-13 15:42:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand