./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB --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 3b48d748645bdde1aeeb8dea66ba49bd5b185acd910927d963305195a7958388 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:22:50,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:22:50,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-27 23:22:50,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:22:50,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:22:50,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:22:50,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:22:50,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:22:50,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:22:50,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:22:50,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:22:50,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:22:50,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:22:50,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:22:51,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:22:51,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:22:51,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:22:51,001 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-27 23:22:51,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:22:51,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:22:51,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:22:51,002 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:22:51,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:22:51,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:51,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:51,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:51,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:22:51,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:22:51,004 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_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3b48d748645bdde1aeeb8dea66ba49bd5b185acd910927d963305195a7958388 [2024-11-27 23:22:51,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:22:51,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:22:51,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:22:51,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:22:51,385 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:22:51,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i [2024-11-27 23:22:54,923 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/data/762bcbabe/ff229ed10a094449a188a661e053dd0d/FLAG509a29137 [2024-11-27 23:22:55,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:22:55,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/sv-benchmarks/c/pthread-race-challenges/per-thread-array-ptr-race.i [2024-11-27 23:22:55,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/data/762bcbabe/ff229ed10a094449a188a661e053dd0d/FLAG509a29137 [2024-11-27 23:22:55,406 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/data/762bcbabe/ff229ed10a094449a188a661e053dd0d [2024-11-27 23:22:55,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:22:55,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:22:55,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:55,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:22:55,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:22:55,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:55" (1/1) ... [2024-11-27 23:22:55,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dd024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:55, skipping insertion in model container [2024-11-27 23:22:55,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:55" (1/1) ... [2024-11-27 23:22:55,464 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:56,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:56,111 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:22:56,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:56,267 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:22:56,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56 WrapperNode [2024-11-27 23:22:56,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:56,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:56,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:22:56,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:22:56,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,319 INFO L138 Inliner]: procedures = 261, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-11-27 23:22:56,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:56,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:22:56,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:22:56,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:22:56,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:22:56,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:22:56,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:22:56,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:22:56,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (1/1) ... [2024-11-27 23:22:56,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:56,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:22:56,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:22:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:22:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-27 23:22:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-27 23:22:56,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:22:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-27 23:22:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-27 23:22:56,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:22:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:22:56,454 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:22:56,610 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:22:56,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:22:56,963 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:22:56,963 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:22:56,980 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:22:56,980 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:22:56,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:56 BoogieIcfgContainer [2024-11-27 23:22:56,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:22:56,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:22:56,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:22:56,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:22:56,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:22:55" (1/3) ... [2024-11-27 23:22:56,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420fe069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:56, skipping insertion in model container [2024-11-27 23:22:56,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:56" (2/3) ... [2024-11-27 23:22:56,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420fe069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:56, skipping insertion in model container [2024-11-27 23:22:56,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:56" (3/3) ... [2024-11-27 23:22:56,998 INFO L128 eAbstractionObserver]: Analyzing ICFG per-thread-array-ptr-race.i [2024-11-27 23:22:57,017 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:22:57,020 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG per-thread-array-ptr-race.i that has 2 procedures, 80 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-27 23:22:57,021 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:22:57,145 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-27 23:22:57,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 84 transitions, 175 flow [2024-11-27 23:22:57,339 INFO L124 PetriNetUnfolderBase]: 6/116 cut-off events. [2024-11-27 23:22:57,344 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:22:57,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 6/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2024-11-27 23:22:57,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 84 transitions, 175 flow [2024-11-27 23:22:57,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 84 transitions, 175 flow [2024-11-27 23:22:57,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:22:57,385 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;@65e4d588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:22:57,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-27 23:22:57,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:22:57,407 INFO L124 PetriNetUnfolderBase]: 3/50 cut-off events. [2024-11-27 23:22:57,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:22:57,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:22:57,409 INFO L206 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] [2024-11-27 23:22:57,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:22:57,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash -774307531, now seen corresponding path program 1 times [2024-11-27 23:22:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97888842] [2024-11-27 23:22:57,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:58,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:58,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97888842] [2024-11-27 23:22:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97888842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:58,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:58,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13039094] [2024-11-27 23:22:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:58,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:22:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:58,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:22:58,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:22:58,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2024-11-27 23:22:58,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:58,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:22:58,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2024-11-27 23:22:58,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:22:58,385 INFO L124 PetriNetUnfolderBase]: 1/118 cut-off events. [2024-11-27 23:22:58,385 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 23:22:58,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 118 events. 1/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 23. Up to 16 conditions per place. [2024-11-27 23:22:58,388 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 11 selfloop transitions, 2 changer transitions 6/86 dead transitions. [2024-11-27 23:22:58,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 215 flow [2024-11-27 23:22:58,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:22:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:22:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 432 transitions. [2024-11-27 23:22:58,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2024-11-27 23:22:58,415 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 175 flow. Second operand 6 states and 432 transitions. [2024-11-27 23:22:58,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 215 flow [2024-11-27 23:22:58,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:22:58,432 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 185 flow [2024-11-27 23:22:58,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-11-27 23:22:58,443 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2024-11-27 23:22:58,445 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 185 flow [2024-11-27 23:22:58,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:58,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:22:58,446 INFO L206 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] [2024-11-27 23:22:58,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:22:58,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:22:58,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1784044746, now seen corresponding path program 1 times [2024-11-27 23:22:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997725515] [2024-11-27 23:22:58,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997725515] [2024-11-27 23:22:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997725515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:22:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462871481] [2024-11-27 23:22:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:59,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:59,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:59,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:59,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 84 [2024-11-27 23:22:59,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:59,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:22:59,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 84 [2024-11-27 23:22:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:22:59,743 INFO L124 PetriNetUnfolderBase]: 70/349 cut-off events. [2024-11-27 23:22:59,743 INFO L125 PetriNetUnfolderBase]: For 25/28 co-relation queries the response was YES. [2024-11-27 23:22:59,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 349 events. 70/349 cut-off events. For 25/28 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1674 event pairs, 35 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 487. Up to 150 conditions per place. [2024-11-27 23:22:59,749 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 23 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-11-27 23:22:59,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 317 flow [2024-11-27 23:22:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:22:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:22:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2024-11-27 23:22:59,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2024-11-27 23:22:59,752 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 185 flow. Second operand 6 states and 388 transitions. [2024-11-27 23:22:59,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 317 flow [2024-11-27 23:22:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 303 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-27 23:22:59,759 INFO L231 Difference]: Finished difference. Result has 93 places, 101 transitions, 321 flow [2024-11-27 23:22:59,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=93, PETRI_TRANSITIONS=101} [2024-11-27 23:22:59,761 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2024-11-27 23:22:59,761 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 101 transitions, 321 flow [2024-11-27 23:22:59,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:22:59,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:22:59,762 INFO L206 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] [2024-11-27 23:22:59,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:22:59,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:22:59,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1053436225, now seen corresponding path program 1 times [2024-11-27 23:22:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580461858] [2024-11-27 23:22:59,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:00,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580461858] [2024-11-27 23:23:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580461858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002328127] [2024-11-27 23:23:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:00,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:00,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:00,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:00,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 84 [2024-11-27 23:23:00,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 101 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:00,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:00,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 84 [2024-11-27 23:23:00,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:00,647 INFO L124 PetriNetUnfolderBase]: 130/477 cut-off events. [2024-11-27 23:23:00,647 INFO L125 PetriNetUnfolderBase]: For 138/150 co-relation queries the response was YES. [2024-11-27 23:23:00,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 477 events. 130/477 cut-off events. For 138/150 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2454 event pairs, 23 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 976. Up to 238 conditions per place. [2024-11-27 23:23:00,652 INFO L140 encePairwiseOnDemand]: 69/84 looper letters, 33 selfloop transitions, 48 changer transitions 8/144 dead transitions. [2024-11-27 23:23:00,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 144 transitions, 639 flow [2024-11-27 23:23:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2024-11-27 23:23:00,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2024-11-27 23:23:00,657 INFO L175 Difference]: Start difference. First operand has 93 places, 101 transitions, 321 flow. Second operand 6 states and 429 transitions. [2024-11-27 23:23:00,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 144 transitions, 639 flow [2024-11-27 23:23:00,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 639 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:00,670 INFO L231 Difference]: Finished difference. Result has 103 places, 136 transitions, 693 flow [2024-11-27 23:23:00,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=693, PETRI_PLACES=103, PETRI_TRANSITIONS=136} [2024-11-27 23:23:00,671 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2024-11-27 23:23:00,671 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 136 transitions, 693 flow [2024-11-27 23:23:00,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:00,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:00,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:00,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:23:00,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:23:00,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash -850050130, now seen corresponding path program 1 times [2024-11-27 23:23:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453634298] [2024-11-27 23:23:00,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:01,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453634298] [2024-11-27 23:23:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453634298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:01,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236929776] [2024-11-27 23:23:01,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:01,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:01,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:01,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:01,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 84 [2024-11-27 23:23:01,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 136 transitions, 693 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:01,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:01,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 84 [2024-11-27 23:23:01,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:01,528 INFO L124 PetriNetUnfolderBase]: 142/505 cut-off events. [2024-11-27 23:23:01,528 INFO L125 PetriNetUnfolderBase]: For 468/496 co-relation queries the response was YES. [2024-11-27 23:23:01,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 505 events. 142/505 cut-off events. For 468/496 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2812 event pairs, 10 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 1464. Up to 241 conditions per place. [2024-11-27 23:23:01,534 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 73 selfloop transitions, 25 changer transitions 13/164 dead transitions. [2024-11-27 23:23:01,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 164 transitions, 1076 flow [2024-11-27 23:23:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 397 transitions. [2024-11-27 23:23:01,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7876984126984127 [2024-11-27 23:23:01,536 INFO L175 Difference]: Start difference. First operand has 103 places, 136 transitions, 693 flow. Second operand 6 states and 397 transitions. [2024-11-27 23:23:01,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 164 transitions, 1076 flow [2024-11-27 23:23:01,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1058 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:01,550 INFO L231 Difference]: Finished difference. Result has 105 places, 151 transitions, 910 flow [2024-11-27 23:23:01,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=105, PETRI_TRANSITIONS=151} [2024-11-27 23:23:01,551 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2024-11-27 23:23:01,552 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 151 transitions, 910 flow [2024-11-27 23:23:01,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:01,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:01,552 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:23:01,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:23:01,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:23:01,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1417759242, now seen corresponding path program 1 times [2024-11-27 23:23:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:01,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391804897] [2024-11-27 23:23:01,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:01,597 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:23:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:23:01,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:23:01,643 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:23:01,645 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-27 23:23:01,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2024-11-27 23:23:01,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2024-11-27 23:23:01,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2024-11-27 23:23:01,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2024-11-27 23:23:01,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:23:01,650 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-27 23:23:01,656 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:23:01,656 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 23:23:01,692 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:23:01,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 220 flow [2024-11-27 23:23:01,748 INFO L124 PetriNetUnfolderBase]: 11/199 cut-off events. [2024-11-27 23:23:01,748 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-27 23:23:01,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 199 events. 11/199 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 422 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2024-11-27 23:23:01,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 220 flow [2024-11-27 23:23:01,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 102 transitions, 220 flow [2024-11-27 23:23:01,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:01,752 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;@65e4d588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:01,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-27 23:23:01,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:23:01,758 INFO L124 PetriNetUnfolderBase]: 3/50 cut-off events. [2024-11-27 23:23:01,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:23:01,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:01,758 INFO L206 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] [2024-11-27 23:23:01,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:01,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 122280539, now seen corresponding path program 1 times [2024-11-27 23:23:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:01,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980985892] [2024-11-27 23:23:01,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980985892] [2024-11-27 23:23:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980985892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:01,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:01,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33328457] [2024-11-27 23:23:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:01,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:23:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:01,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:23:01,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:23:01,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 102 [2024-11-27 23:23:01,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:01,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:01,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 102 [2024-11-27 23:23:01,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:02,060 INFO L124 PetriNetUnfolderBase]: 3/198 cut-off events. [2024-11-27 23:23:02,060 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-27 23:23:02,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 198 events. 3/198 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 431 event pairs, 0 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 141. Up to 32 conditions per place. [2024-11-27 23:23:02,062 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 14 selfloop transitions, 2 changer transitions 6/105 dead transitions. [2024-11-27 23:23:02,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 268 flow [2024-11-27 23:23:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2024-11-27 23:23:02,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2024-11-27 23:23:02,064 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 220 flow. Second operand 6 states and 531 transitions. [2024-11-27 23:23:02,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 268 flow [2024-11-27 23:23:02,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 268 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:02,070 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 234 flow [2024-11-27 23:23:02,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-11-27 23:23:02,073 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2024-11-27 23:23:02,074 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 234 flow [2024-11-27 23:23:02,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:02,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:02,075 INFO L206 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] [2024-11-27 23:23:02,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:23:02,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:02,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1614334480, now seen corresponding path program 1 times [2024-11-27 23:23:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287388609] [2024-11-27 23:23:02,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:02,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287388609] [2024-11-27 23:23:02,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287388609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:02,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:02,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:02,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753970196] [2024-11-27 23:23:02,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:02,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:02,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:02,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:02,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-11-27 23:23:02,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:02,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:02,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-11-27 23:23:02,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:03,256 INFO L124 PetriNetUnfolderBase]: 902/2602 cut-off events. [2024-11-27 23:23:03,256 INFO L125 PetriNetUnfolderBase]: For 180/186 co-relation queries the response was YES. [2024-11-27 23:23:03,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 2602 events. 902/2602 cut-off events. For 180/186 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19765 event pairs, 512 based on Foata normal form. 0/2364 useless extension candidates. Maximal degree in co-relation 3404. Up to 1384 conditions per place. [2024-11-27 23:23:03,279 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 31 selfloop transitions, 38 changer transitions 0/137 dead transitions. [2024-11-27 23:23:03,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 137 transitions, 453 flow [2024-11-27 23:23:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2024-11-27 23:23:03,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7892156862745098 [2024-11-27 23:23:03,285 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 234 flow. Second operand 6 states and 483 transitions. [2024-11-27 23:23:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 137 transitions, 453 flow [2024-11-27 23:23:03,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 441 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-27 23:23:03,292 INFO L231 Difference]: Finished difference. Result has 113 places, 136 transitions, 476 flow [2024-11-27 23:23:03,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=113, PETRI_TRANSITIONS=136} [2024-11-27 23:23:03,293 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2024-11-27 23:23:03,295 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 136 transitions, 476 flow [2024-11-27 23:23:03,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:03,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:03,296 INFO L206 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] [2024-11-27 23:23:03,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:23:03,296 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:03,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 963901781, now seen corresponding path program 1 times [2024-11-27 23:23:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127382321] [2024-11-27 23:23:03,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:03,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:03,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:03,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127382321] [2024-11-27 23:23:03,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127382321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:03,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:03,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:03,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896863982] [2024-11-27 23:23:03,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:03,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:03,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:03,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:03,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:03,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 102 [2024-11-27 23:23:03,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 102 [2024-11-27 23:23:03,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:05,026 INFO L124 PetriNetUnfolderBase]: 1866/4588 cut-off events. [2024-11-27 23:23:05,026 INFO L125 PetriNetUnfolderBase]: For 1537/1622 co-relation queries the response was YES. [2024-11-27 23:23:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 4588 events. 1866/4588 cut-off events. For 1537/1622 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35895 event pairs, 434 based on Foata normal form. 0/4289 useless extension candidates. Maximal degree in co-relation 8549. Up to 2580 conditions per place. [2024-11-27 23:23:05,067 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 63 selfloop transitions, 92 changer transitions 0/231 dead transitions. [2024-11-27 23:23:05,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 231 transitions, 1222 flow [2024-11-27 23:23:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:05,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2024-11-27 23:23:05,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2024-11-27 23:23:05,073 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 476 flow. Second operand 6 states and 531 transitions. [2024-11-27 23:23:05,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 231 transitions, 1222 flow [2024-11-27 23:23:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 231 transitions, 1222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:05,089 INFO L231 Difference]: Finished difference. Result has 123 places, 223 transitions, 1312 flow [2024-11-27 23:23:05,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1312, PETRI_PLACES=123, PETRI_TRANSITIONS=223} [2024-11-27 23:23:05,091 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 21 predicate places. [2024-11-27 23:23:05,091 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 223 transitions, 1312 flow [2024-11-27 23:23:05,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:05,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:05,092 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:05,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:23:05,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:05,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -698313282, now seen corresponding path program 1 times [2024-11-27 23:23:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786441686] [2024-11-27 23:23:05,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:05,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:05,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786441686] [2024-11-27 23:23:05,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786441686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:05,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:05,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:23:05,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103750858] [2024-11-27 23:23:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:05,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:23:05,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:05,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:23:05,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:23:05,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 102 [2024-11-27 23:23:05,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 223 transitions, 1312 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:05,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:05,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 102 [2024-11-27 23:23:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:07,174 INFO L124 PetriNetUnfolderBase]: 2321/5558 cut-off events. [2024-11-27 23:23:07,174 INFO L125 PetriNetUnfolderBase]: For 5342/5491 co-relation queries the response was YES. [2024-11-27 23:23:07,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17509 conditions, 5558 events. 2321/5558 cut-off events. For 5342/5491 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 44729 event pairs, 294 based on Foata normal form. 2/5328 useless extension candidates. Maximal degree in co-relation 14216. Up to 3135 conditions per place. [2024-11-27 23:23:07,241 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 145 selfloop transitions, 76 changer transitions 0/296 dead transitions. [2024-11-27 23:23:07,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 296 transitions, 2246 flow [2024-11-27 23:23:07,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:23:07,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:23:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 494 transitions. [2024-11-27 23:23:07,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8071895424836601 [2024-11-27 23:23:07,244 INFO L175 Difference]: Start difference. First operand has 123 places, 223 transitions, 1312 flow. Second operand 6 states and 494 transitions. [2024-11-27 23:23:07,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 296 transitions, 2246 flow [2024-11-27 23:23:07,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 296 transitions, 2228 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:07,386 INFO L231 Difference]: Finished difference. Result has 133 places, 294 transitions, 2152 flow [2024-11-27 23:23:07,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2152, PETRI_PLACES=133, PETRI_TRANSITIONS=294} [2024-11-27 23:23:07,390 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 31 predicate places. [2024-11-27 23:23:07,390 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 294 transitions, 2152 flow [2024-11-27 23:23:07,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:07,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:07,393 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:23:07,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:23:07,393 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:07,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -818477016, now seen corresponding path program 1 times [2024-11-27 23:23:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675141017] [2024-11-27 23:23:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675141017] [2024-11-27 23:23:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675141017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:08,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:23:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635699254] [2024-11-27 23:23:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:08,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:23:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:08,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:23:08,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:23:09,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-27 23:23:09,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 294 transitions, 2152 flow. Second operand has 14 states, 14 states have (on average 61.857142857142854) internal successors, (866), 14 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:09,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:09,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-27 23:23:09,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:12,416 INFO L124 PetriNetUnfolderBase]: 3597/8563 cut-off events. [2024-11-27 23:23:12,417 INFO L125 PetriNetUnfolderBase]: For 14658/14942 co-relation queries the response was YES. [2024-11-27 23:23:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29987 conditions, 8563 events. 3597/8563 cut-off events. For 14658/14942 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 74147 event pairs, 99 based on Foata normal form. 154/8503 useless extension candidates. Maximal degree in co-relation 25895. Up to 3354 conditions per place. [2024-11-27 23:23:12,516 INFO L140 encePairwiseOnDemand]: 80/102 looper letters, 397 selfloop transitions, 188 changer transitions 0/648 dead transitions. [2024-11-27 23:23:12,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 648 transitions, 6238 flow [2024-11-27 23:23:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:23:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-27 23:23:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1429 transitions. [2024-11-27 23:23:12,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6671335200746965 [2024-11-27 23:23:12,523 INFO L175 Difference]: Start difference. First operand has 133 places, 294 transitions, 2152 flow. Second operand 21 states and 1429 transitions. [2024-11-27 23:23:12,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 648 transitions, 6238 flow [2024-11-27 23:23:12,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 648 transitions, 6030 flow, removed 104 selfloop flow, removed 0 redundant places. [2024-11-27 23:23:12,636 INFO L231 Difference]: Finished difference. Result has 160 places, 469 transitions, 4417 flow [2024-11-27 23:23:12,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4417, PETRI_PLACES=160, PETRI_TRANSITIONS=469} [2024-11-27 23:23:12,638 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 58 predicate places. [2024-11-27 23:23:12,639 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 469 transitions, 4417 flow [2024-11-27 23:23:12,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 61.857142857142854) internal successors, (866), 14 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:12,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:12,641 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:12,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:23:12,641 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:12,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash -920036147, now seen corresponding path program 1 times [2024-11-27 23:23:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:12,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750031962] [2024-11-27 23:23:12,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:12,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:13,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750031962] [2024-11-27 23:23:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750031962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:23:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934577344] [2024-11-27 23:23:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:13,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:23:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:13,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:23:13,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:23:14,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 102 [2024-11-27 23:23:14,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 469 transitions, 4417 flow. Second operand has 14 states, 14 states have (on average 64.5) internal successors, (903), 14 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:14,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:14,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 102 [2024-11-27 23:23:14,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:17,854 INFO L124 PetriNetUnfolderBase]: 4386/9657 cut-off events. [2024-11-27 23:23:17,854 INFO L125 PetriNetUnfolderBase]: For 32527/33125 co-relation queries the response was YES. [2024-11-27 23:23:17,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42128 conditions, 9657 events. 4386/9657 cut-off events. For 32527/33125 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 81185 event pairs, 251 based on Foata normal form. 274/9700 useless extension candidates. Maximal degree in co-relation 37419. Up to 3560 conditions per place. [2024-11-27 23:23:18,003 INFO L140 encePairwiseOnDemand]: 80/102 looper letters, 420 selfloop transitions, 454 changer transitions 1/952 dead transitions. [2024-11-27 23:23:18,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 952 transitions, 10899 flow [2024-11-27 23:23:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:23:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-27 23:23:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1662 transitions. [2024-11-27 23:23:18,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7084398976982097 [2024-11-27 23:23:18,011 INFO L175 Difference]: Start difference. First operand has 160 places, 469 transitions, 4417 flow. Second operand 23 states and 1662 transitions. [2024-11-27 23:23:18,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 952 transitions, 10899 flow [2024-11-27 23:23:18,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 952 transitions, 10871 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-27 23:23:18,219 INFO L231 Difference]: Finished difference. Result has 188 places, 775 transitions, 9573 flow [2024-11-27 23:23:18,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9573, PETRI_PLACES=188, PETRI_TRANSITIONS=775} [2024-11-27 23:23:18,220 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 86 predicate places. [2024-11-27 23:23:18,220 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 775 transitions, 9573 flow [2024-11-27 23:23:18,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 64.5) internal successors, (903), 14 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:18,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:18,221 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:23:18,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:23:18,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:18,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash 686470818, now seen corresponding path program 2 times [2024-11-27 23:23:18,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:18,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083220824] [2024-11-27 23:23:18,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:18,265 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:23:18,265 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:19,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083220824] [2024-11-27 23:23:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083220824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:19,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:23:19,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 23:23:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404866469] [2024-11-27 23:23:19,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:19,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:23:19,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:19,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:23:19,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:23:20,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 102 [2024-11-27 23:23:20,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 775 transitions, 9573 flow. Second operand has 14 states, 14 states have (on average 61.857142857142854) internal successors, (866), 14 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:20,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:23:20,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 102 [2024-11-27 23:23:20,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:23:23,674 INFO L124 PetriNetUnfolderBase]: 4593/10416 cut-off events. [2024-11-27 23:23:23,674 INFO L125 PetriNetUnfolderBase]: For 74896/75657 co-relation queries the response was YES. [2024-11-27 23:23:23,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55801 conditions, 10416 events. 4593/10416 cut-off events. For 74896/75657 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 89083 event pairs, 320 based on Foata normal form. 251/10337 useless extension candidates. Maximal degree in co-relation 54667. Up to 5269 conditions per place. [2024-11-27 23:23:23,786 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 590 selfloop transitions, 281 changer transitions 0/943 dead transitions. [2024-11-27 23:23:23,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 943 transitions, 13592 flow [2024-11-27 23:23:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:23:23,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-27 23:23:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1292 transitions. [2024-11-27 23:23:23,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-27 23:23:23,791 INFO L175 Difference]: Start difference. First operand has 188 places, 775 transitions, 9573 flow. Second operand 19 states and 1292 transitions. [2024-11-27 23:23:23,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 943 transitions, 13592 flow [2024-11-27 23:23:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 943 transitions, 13358 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-11-27 23:23:24,309 INFO L231 Difference]: Finished difference. Result has 203 places, 872 transitions, 12016 flow [2024-11-27 23:23:24,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=9339, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12016, PETRI_PLACES=203, PETRI_TRANSITIONS=872} [2024-11-27 23:23:24,312 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 101 predicate places. [2024-11-27 23:23:24,313 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 872 transitions, 12016 flow [2024-11-27 23:23:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 61.857142857142854) internal successors, (866), 14 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:24,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:23:24,314 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:23:24,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:23:24,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:23:24,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 102691944, now seen corresponding path program 3 times [2024-11-27 23:23:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21569429] [2024-11-27 23:23:24,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:24,359 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:23:24,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:25,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:25,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21569429] [2024-11-27 23:23:25,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21569429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:25,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495473682] [2024-11-27 23:23:25,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:25,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:25,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:25,411 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:23:25,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:25,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:23:25,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:25,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 23:23:25,614 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 23:23:25,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 23:23:26,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-27 23:23:26,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-11-27 23:23:26,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-11-27 23:23:26,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-11-27 23:23:27,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 60 [2024-11-27 23:23:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:27,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:32,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495473682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:32,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 42 [2024-11-27 23:23:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152252344] [2024-11-27 23:23:32,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 23:23:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:32,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 23:23:32,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:23:40,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:23:46,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:23:50,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:23:59,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:24:00,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-27 23:24:00,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 872 transitions, 12016 flow. Second operand has 43 states, 43 states have (on average 56.02325581395349) internal successors, (2409), 43 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:00,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:00,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-27 23:24:00,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:12,025 INFO L124 PetriNetUnfolderBase]: 11488/24217 cut-off events. [2024-11-27 23:24:12,025 INFO L125 PetriNetUnfolderBase]: For 219884/222579 co-relation queries the response was YES. [2024-11-27 23:24:12,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140681 conditions, 24217 events. 11488/24217 cut-off events. For 219884/222579 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 229368 event pairs, 1235 based on Foata normal form. 1104/24918 useless extension candidates. Maximal degree in co-relation 138728. Up to 8503 conditions per place. [2024-11-27 23:24:12,356 INFO L140 encePairwiseOnDemand]: 71/102 looper letters, 1014 selfloop transitions, 1119 changer transitions 0/2199 dead transitions. [2024-11-27 23:24:12,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 2199 transitions, 38530 flow [2024-11-27 23:24:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 23:24:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-27 23:24:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2211 transitions. [2024-11-27 23:24:12,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.619327731092437 [2024-11-27 23:24:12,364 INFO L175 Difference]: Start difference. First operand has 203 places, 872 transitions, 12016 flow. Second operand 35 states and 2211 transitions. [2024-11-27 23:24:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 2199 transitions, 38530 flow [2024-11-27 23:24:13,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 2199 transitions, 38278 flow, removed 96 selfloop flow, removed 12 redundant places. [2024-11-27 23:24:13,802 INFO L231 Difference]: Finished difference. Result has 240 places, 1801 transitions, 33251 flow [2024-11-27 23:24:13,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=33251, PETRI_PLACES=240, PETRI_TRANSITIONS=1801} [2024-11-27 23:24:13,803 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 138 predicate places. [2024-11-27 23:24:13,803 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 1801 transitions, 33251 flow [2024-11-27 23:24:13,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 56.02325581395349) internal successors, (2409), 43 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:13,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:13,805 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:24:13,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:24:14,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:24:14,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:24:14,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1394305264, now seen corresponding path program 4 times [2024-11-27 23:24:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:14,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15183352] [2024-11-27 23:24:14,007 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:24:14,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:14,034 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:24:14,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15183352] [2024-11-27 23:24:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15183352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094073298] [2024-11-27 23:24:14,717 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:24:14,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:14,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:14,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:24:14,921 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:24:14,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:14,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:24:14,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:15,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 23:24:15,057 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 23:24:15,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 23:24:15,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-27 23:24:15,119 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 28 treesize of output 27 [2024-11-27 23:24:15,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:15,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2024-11-27 23:24:15,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:15,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2024-11-27 23:24:15,241 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 56 treesize of output 45 [2024-11-27 23:24:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:15,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:15,277 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 3)))) (forall ((v_ArrVal_380 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 2)))) (forall ((v_ArrVal_380 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0)))))) is different from false [2024-11-27 23:24:15,345 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~nondet9#1|)))))) is different from false [2024-11-27 23:24:15,365 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse2 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse1) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse2)))) (forall ((v_ArrVal_380 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse2 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_380 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_380) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse2 1)))))))) is different from false [2024-11-27 23:24:21,648 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:21,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2024-11-27 23:24:21,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:21,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 35 [2024-11-27 23:24:21,669 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:21,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-27 23:24:21,677 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:21,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-27 23:24:21,688 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:21,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2024-11-27 23:24:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094073298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:21,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-27 23:24:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764697757] [2024-11-27 23:24:21,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:21,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:24:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:21,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:24:21,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=237, Unknown=27, NotChecked=102, Total=420 [2024-11-27 23:24:22,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-27 23:24:22,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 1801 transitions, 33251 flow. Second operand has 21 states, 21 states have (on average 49.095238095238095) internal successors, (1031), 21 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:22,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:22,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-27 23:24:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:35,490 INFO L124 PetriNetUnfolderBase]: 16680/35610 cut-off events. [2024-11-27 23:24:35,490 INFO L125 PetriNetUnfolderBase]: For 367682/370648 co-relation queries the response was YES. [2024-11-27 23:24:35,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206020 conditions, 35610 events. 16680/35610 cut-off events. For 367682/370648 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 362606 event pairs, 3562 based on Foata normal form. 854/34759 useless extension candidates. Maximal degree in co-relation 203643. Up to 20465 conditions per place. [2024-11-27 23:24:35,819 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 1144 selfloop transitions, 1017 changer transitions 1/2216 dead transitions. [2024-11-27 23:24:35,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 2216 transitions, 45007 flow [2024-11-27 23:24:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:24:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-27 23:24:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1167 transitions. [2024-11-27 23:24:35,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5720588235294117 [2024-11-27 23:24:35,822 INFO L175 Difference]: Start difference. First operand has 240 places, 1801 transitions, 33251 flow. Second operand 20 states and 1167 transitions. [2024-11-27 23:24:35,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 2216 transitions, 45007 flow [2024-11-27 23:24:38,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 2216 transitions, 43002 flow, removed 971 selfloop flow, removed 12 redundant places. [2024-11-27 23:24:38,671 INFO L231 Difference]: Finished difference. Result has 252 places, 2090 transitions, 41803 flow [2024-11-27 23:24:38,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=31494, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=41803, PETRI_PLACES=252, PETRI_TRANSITIONS=2090} [2024-11-27 23:24:38,672 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 150 predicate places. [2024-11-27 23:24:38,672 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 2090 transitions, 41803 flow [2024-11-27 23:24:38,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 49.095238095238095) internal successors, (1031), 21 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:38,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:38,673 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:24:38,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:24:38,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:24:38,873 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:24:38,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2023184034, now seen corresponding path program 5 times [2024-11-27 23:24:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501451165] [2024-11-27 23:24:38,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:38,895 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:38,897 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:39,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501451165] [2024-11-27 23:24:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501451165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515810373] [2024-11-27 23:24:39,357 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:39,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:39,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:24:39,459 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:39,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:39,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:24:39,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:39,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 23:24:39,515 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 23:24:39,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 23:24:39,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-27 23:24:39,574 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 28 treesize of output 27 [2024-11-27 23:24:39,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:39,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2024-11-27 23:24:39,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:39,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2024-11-27 23:24:39,657 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 56 treesize of output 45 [2024-11-27 23:24:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:39,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:39,688 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_444 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0)))) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 3)))) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse0 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)))) is different from false [2024-11-27 23:24:39,714 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 2)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~p~0.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~nondet9#1|)))))) is different from false [2024-11-27 23:24:39,859 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 2)) (.cse2 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base|) .cse3 |c_ULTIMATE.start_main_#t~nondet9#1|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1 1)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse1)))) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse3) |c_ULTIMATE.start_main_#t~nondet9#1|)))))) is different from false [2024-11-27 23:24:39,880 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse3 1)) (.cse2 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse3 2)) (.cse4 (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse3 3))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base| (store (store (store (select |c_#race| |c_ULTIMATE.start_main_~tids~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~nondet9#1|) .cse2 |c_ULTIMATE.start_main_#t~nondet9#1|) .cse4 |c_ULTIMATE.start_main_#t~nondet9#1|)))) (and (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse1) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) (+ |c_ULTIMATE.start_main_~tids~0#1.offset| .cse3)) |c_ULTIMATE.start_main_#t~nondet9#1|)) (forall ((v_ArrVal_444 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet9#1| (select (select (store .cse0 c_threadThread1of2ForFork0_~arg.base v_ArrVal_444) |c_ULTIMATE.start_main_~tids~0#1.base|) .cse4))))))) is different from false [2024-11-27 23:24:39,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:39,903 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2024-11-27 23:24:39,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:24:39,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 35 [2024-11-27 23:24:39,923 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:39,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-27 23:24:39,930 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:39,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2024-11-27 23:24:39,937 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-27 23:24:39,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-27 23:24:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515810373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:39,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-27 23:24:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878261691] [2024-11-27 23:24:39,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:39,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:24:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:39,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:24:39,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=220, Unknown=17, NotChecked=132, Total=420 [2024-11-27 23:24:40,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-27 23:24:40,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 2090 transitions, 41803 flow. Second operand has 21 states, 21 states have (on average 49.095238095238095) internal successors, (1031), 21 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:40,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:40,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-27 23:24:40,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:55,530 INFO L124 PetriNetUnfolderBase]: 16752/36268 cut-off events. [2024-11-27 23:24:55,530 INFO L125 PetriNetUnfolderBase]: For 413630/416258 co-relation queries the response was YES. [2024-11-27 23:24:55,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217349 conditions, 36268 events. 16752/36268 cut-off events. For 413630/416258 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 373473 event pairs, 3378 based on Foata normal form. 769/35313 useless extension candidates. Maximal degree in co-relation 214937. Up to 19560 conditions per place. [2024-11-27 23:24:55,889 INFO L140 encePairwiseOnDemand]: 76/102 looper letters, 1140 selfloop transitions, 1349 changer transitions 1/2544 dead transitions. [2024-11-27 23:24:55,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 2544 transitions, 55547 flow [2024-11-27 23:24:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:24:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-27 23:24:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1168 transitions. [2024-11-27 23:24:55,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2024-11-27 23:24:55,894 INFO L175 Difference]: Start difference. First operand has 252 places, 2090 transitions, 41803 flow. Second operand 20 states and 1168 transitions. [2024-11-27 23:24:55,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 2544 transitions, 55547 flow [2024-11-27 23:24:59,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 2544 transitions, 54560 flow, removed 366 selfloop flow, removed 14 redundant places. [2024-11-27 23:24:59,098 INFO L231 Difference]: Finished difference. Result has 262 places, 2411 transitions, 52697 flow [2024-11-27 23:24:59,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=40934, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=52697, PETRI_PLACES=262, PETRI_TRANSITIONS=2411} [2024-11-27 23:24:59,099 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 160 predicate places. [2024-11-27 23:24:59,099 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 2411 transitions, 52697 flow [2024-11-27 23:24:59,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 49.095238095238095) internal successors, (1031), 21 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:59,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:59,100 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-27 23:24:59,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:24:59,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:24:59,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-27 23:24:59,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1075526734, now seen corresponding path program 6 times [2024-11-27 23:24:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018625300] [2024-11-27 23:24:59,302 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:24:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:59,336 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 23:24:59,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:25:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018625300] [2024-11-27 23:25:00,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018625300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:00,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160988622] [2024-11-27 23:25:00,477 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:25:00,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:00,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:00,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853b139e-64c9-4192-81e3-1da828ce3222/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:25:00,662 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-27 23:25:00,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:00,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:25:00,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:00,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-27 23:25:00,774 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-27 23:25:00,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-27 23:25:01,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-27 23:25:01,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-11-27 23:25:01,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2024-11-27 23:25:01,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2024-11-27 23:25:01,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 60 [2024-11-27 23:25:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:25:01,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:25:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160988622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:05,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:05,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 48 [2024-11-27 23:25:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635104815] [2024-11-27 23:25:05,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:05,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 23:25:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:05,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 23:25:05,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2093, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 23:25:24,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 102 [2024-11-27 23:25:24,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 2411 transitions, 52697 flow. Second operand has 49 states, 49 states have (on average 50.97959183673469) internal successors, (2498), 49 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:24,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:25:24,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 102 [2024-11-27 23:25:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:25:40,048 INFO L124 PetriNetUnfolderBase]: 10522/23755 cut-off events. [2024-11-27 23:25:40,048 INFO L125 PetriNetUnfolderBase]: For 350349/355007 co-relation queries the response was YES. [2024-11-27 23:25:40,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169894 conditions, 23755 events. 10522/23755 cut-off events. For 350349/355007 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 231513 event pairs, 591 based on Foata normal form. 2060/25310 useless extension candidates. Maximal degree in co-relation 168260. Up to 10437 conditions per place. [2024-11-27 23:25:40,289 INFO L140 encePairwiseOnDemand]: 66/102 looper letters, 1696 selfloop transitions, 996 changer transitions 30/2779 dead transitions. [2024-11-27 23:25:40,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 2779 transitions, 64449 flow [2024-11-27 23:25:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 23:25:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-27 23:25:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1755 transitions. [2024-11-27 23:25:40,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5550284629981025 [2024-11-27 23:25:40,293 INFO L175 Difference]: Start difference. First operand has 262 places, 2411 transitions, 52697 flow. Second operand 31 states and 1755 transitions. [2024-11-27 23:25:40,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 2779 transitions, 64449 flow