./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:31:45,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:31:46,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:31:46,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:31:46,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:31:46,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:31:46,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:31:46,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:31:46,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:31:46,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:31:46,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:31:46,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:31:46,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:31:46,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:31:46,032 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:31:46,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:31:46,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:31:46,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:31:46,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:31:46,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:31:46,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:31:46,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:31:46,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:31:46,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:31:46,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:31:46,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:31:46,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:31:46,037 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:31:46,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:31:46,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:31:46,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:31:46,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:31:46,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:31:46,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:31:46,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:31:46,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:31:46,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:31:46,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:31:46,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:31:46,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:31:46,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:31:46,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:31:46,042 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-20 09:31:46,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:31:46,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:31:46,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:31:46,304 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:31:46,305 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:31:46,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-20 09:31:47,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:31:47,810 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:31:47,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-20 09:31:47,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48eadc266/a19837ae88ae48ba82e748c0c21c7cae/FLAGfda630299 [2024-11-20 09:31:47,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48eadc266/a19837ae88ae48ba82e748c0c21c7cae [2024-11-20 09:31:47,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:31:47,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:31:47,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:31:47,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:31:47,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:31:47,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:47" (1/1) ... [2024-11-20 09:31:47,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6e50eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:47, skipping insertion in model container [2024-11-20 09:31:47,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:31:47" (1/1) ... [2024-11-20 09:31:47,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:31:48,153 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2024-11-20 09:31:48,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:31:48,218 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:31:48,268 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i[30176,30189] [2024-11-20 09:31:48,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:31:48,325 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:31:48,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48 WrapperNode [2024-11-20 09:31:48,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:31:48,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:31:48,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:31:48,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:31:48,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,370 INFO L138 Inliner]: procedures = 171, calls = 40, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-11-20 09:31:48,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:31:48,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:31:48,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:31:48,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:31:48,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,410 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 2, 6, 5]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 0, 1, 5]. The 3 writes are split as follows [0, 0, 1, 2, 0]. [2024-11-20 09:31:48,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:31:48,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:31:48,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:31:48,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:31:48,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (1/1) ... [2024-11-20 09:31:48,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:31:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:31:48,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:31:48,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:31:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:31:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 09:31:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 09:31:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 09:31:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:31:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:31:48,533 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:31:48,665 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:31:48,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:31:48,838 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:31:48,838 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:31:48,988 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:31:48,989 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 09:31:48,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:48 BoogieIcfgContainer [2024-11-20 09:31:48,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:31:48,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:31:48,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:31:48,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:31:48,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:31:47" (1/3) ... [2024-11-20 09:31:48,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f90ae87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:48, skipping insertion in model container [2024-11-20 09:31:48,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:31:48" (2/3) ... [2024-11-20 09:31:48,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f90ae87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:31:48, skipping insertion in model container [2024-11-20 09:31:48,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:31:48" (3/3) ... [2024-11-20 09:31:48,999 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-20 09:31:49,015 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:31:49,016 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:31:49,016 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:31:49,050 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 09:31:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 46 transitions, 99 flow [2024-11-20 09:31:49,113 INFO L124 PetriNetUnfolderBase]: 13/63 cut-off events. [2024-11-20 09:31:49,116 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:31:49,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 13/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2024-11-20 09:31:49,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 46 transitions, 99 flow [2024-11-20 09:31:49,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 44 transitions, 92 flow [2024-11-20 09:31:49,130 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:31:49,137 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;@6016a3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:31:49,137 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 09:31:49,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:31:49,143 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-20 09:31:49,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:31:49,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:49,144 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 09:31:49,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:49,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1242857347, now seen corresponding path program 1 times [2024-11-20 09:31:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443941187] [2024-11-20 09:31:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:49,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 09:31:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:49,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 09:31:49,351 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 09:31:49,353 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-20 09:31:49,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-20 09:31:49,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:31:49,357 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-20 09:31:49,364 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 09:31:49,364 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 09:31:49,384 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 09:31:49,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 71 transitions, 158 flow [2024-11-20 09:31:49,420 INFO L124 PetriNetUnfolderBase]: 24/112 cut-off events. [2024-11-20 09:31:49,420 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-20 09:31:49,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 112 events. 24/112 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 434 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2024-11-20 09:31:49,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 71 transitions, 158 flow [2024-11-20 09:31:49,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 71 transitions, 158 flow [2024-11-20 09:31:49,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:31:49,425 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;@6016a3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:31:49,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 09:31:49,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:31:49,435 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-20 09:31:49,436 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:31:49,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:49,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 09:31:49,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:49,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash -952723668, now seen corresponding path program 1 times [2024-11-20 09:31:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:49,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717507310] [2024-11-20 09:31:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:49,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:31:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:31:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717507310] [2024-11-20 09:31:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717507310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:31:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:31:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:31:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072443112] [2024-11-20 09:31:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:31:49,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:31:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:31:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:31:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:31:49,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 71 [2024-11-20 09:31:49,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-11-20 09:31:49,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:31:49,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 71 [2024-11-20 09:31:49,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:31:50,203 INFO L124 PetriNetUnfolderBase]: 1858/3805 cut-off events. [2024-11-20 09:31:50,204 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-20 09:31:50,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 3805 events. 1858/3805 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 27388 event pairs, 1723 based on Foata normal form. 1056/4534 useless extension candidates. Maximal degree in co-relation 5002. Up to 3009 conditions per place. [2024-11-20 09:31:50,227 INFO L140 encePairwiseOnDemand]: 53/71 looper letters, 35 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2024-11-20 09:31:50,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 238 flow [2024-11-20 09:31:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:31:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:31:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-20 09:31:50,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6338028169014085 [2024-11-20 09:31:50,241 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 158 flow. Second operand 3 states and 135 transitions. [2024-11-20 09:31:50,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 238 flow [2024-11-20 09:31:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:31:50,249 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 114 flow [2024-11-20 09:31:50,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-11-20 09:31:50,254 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2024-11-20 09:31:50,257 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 114 flow [2024-11-20 09:31:50,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-11-20 09:31:50,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:50,258 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-20 09:31:50,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:31:50,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:50,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1617157474, now seen corresponding path program 1 times [2024-11-20 09:31:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583656258] [2024-11-20 09:31:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:50,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 09:31:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:50,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 09:31:50,311 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 09:31:50,313 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-20 09:31:50,314 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-20 09:31:50,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:31:50,314 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 09:31:50,315 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 09:31:50,315 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 09:31:50,338 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:31:50,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 96 transitions, 219 flow [2024-11-20 09:31:50,360 INFO L124 PetriNetUnfolderBase]: 38/172 cut-off events. [2024-11-20 09:31:50,361 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-11-20 09:31:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 172 events. 38/172 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 723 event pairs, 1 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 123. Up to 12 conditions per place. [2024-11-20 09:31:50,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 96 transitions, 219 flow [2024-11-20 09:31:50,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 96 transitions, 219 flow [2024-11-20 09:31:50,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:31:50,370 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;@6016a3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:31:50,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 09:31:50,373 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:31:50,374 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-20 09:31:50,374 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:31:50,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:50,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 09:31:50,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:50,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1887288108, now seen corresponding path program 1 times [2024-11-20 09:31:50,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:50,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537432111] [2024-11-20 09:31:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:31:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:31:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537432111] [2024-11-20 09:31:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537432111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:31:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:31:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:31:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455965011] [2024-11-20 09:31:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:31:50,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:31:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:31:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:31:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:31:50,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-20 09:31:50,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-20 09:31:50,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:31:50,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-20 09:31:50,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:31:54,791 INFO L124 PetriNetUnfolderBase]: 29927/49891 cut-off events. [2024-11-20 09:31:54,792 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-11-20 09:31:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92784 conditions, 49891 events. 29927/49891 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 435637 event pairs, 19222 based on Foata normal form. 15616/61952 useless extension candidates. Maximal degree in co-relation 7041. Up to 42082 conditions per place. [2024-11-20 09:31:55,031 INFO L140 encePairwiseOnDemand]: 72/96 looper letters, 45 selfloop transitions, 2 changer transitions 11/86 dead transitions. [2024-11-20 09:31:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 309 flow [2024-11-20 09:31:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:31:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:31:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-20 09:31:55,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-20 09:31:55,034 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 219 flow. Second operand 3 states and 176 transitions. [2024-11-20 09:31:55,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 309 flow [2024-11-20 09:31:55,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:31:55,042 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 158 flow [2024-11-20 09:31:55,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-11-20 09:31:55,043 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2024-11-20 09:31:55,043 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 158 flow [2024-11-20 09:31:55,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-11-20 09:31:55,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:55,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:31:55,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:31:55,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:55,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1843954143, now seen corresponding path program 1 times [2024-11-20 09:31:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:55,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123879752] [2024-11-20 09:31:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:31:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:55,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:31:55,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123879752] [2024-11-20 09:31:55,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123879752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:31:55,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129192859] [2024-11-20 09:31:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:55,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:31:55,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:31:55,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:31:55,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:31:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:31:55,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 09:31:55,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:31:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:55,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:31:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129192859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:31:55,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:31:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 09:31:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051152574] [2024-11-20 09:31:55,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:31:55,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:31:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:31:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:31:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:31:55,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 96 [2024-11-20 09:31:55,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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) [2024-11-20 09:31:55,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:31:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 96 [2024-11-20 09:31:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:31:56,268 INFO L124 PetriNetUnfolderBase]: 7668/13138 cut-off events. [2024-11-20 09:31:56,268 INFO L125 PetriNetUnfolderBase]: For 3159/3159 co-relation queries the response was YES. [2024-11-20 09:31:56,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25698 conditions, 13138 events. 7668/13138 cut-off events. For 3159/3159 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 97528 event pairs, 1680 based on Foata normal form. 1110/14094 useless extension candidates. Maximal degree in co-relation 2631. Up to 7400 conditions per place. [2024-11-20 09:31:56,341 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 88 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-11-20 09:31:56,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 117 transitions, 446 flow [2024-11-20 09:31:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:31:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:31:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 281 transitions. [2024-11-20 09:31:56,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4878472222222222 [2024-11-20 09:31:56,345 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 158 flow. Second operand 6 states and 281 transitions. [2024-11-20 09:31:56,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 117 transitions, 446 flow [2024-11-20 09:31:56,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 442 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:31:56,348 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 152 flow [2024-11-20 09:31:56,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-20 09:31:56,349 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2024-11-20 09:31:56,349 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 152 flow [2024-11-20 09:31:56,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 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) [2024-11-20 09:31:56,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:56,350 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-20 09:31:56,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:31:56,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:31:56,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:56,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:56,557 INFO L85 PathProgramCache]: Analyzing trace with hash 261964418, now seen corresponding path program 1 times [2024-11-20 09:31:56,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931662364] [2024-11-20 09:31:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:56,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:56,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 09:31:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 09:31:56,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 09:31:56,594 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 09:31:56,594 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-20 09:31:56,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-20 09:31:56,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:31:56,594 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-20 09:31:56,595 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 09:31:56,595 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-20 09:31:56,616 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 09:31:56,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 121 transitions, 282 flow [2024-11-20 09:31:56,640 INFO L124 PetriNetUnfolderBase]: 60/256 cut-off events. [2024-11-20 09:31:56,641 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2024-11-20 09:31:56,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 256 events. 60/256 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1126 event pairs, 6 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 196. Up to 32 conditions per place. [2024-11-20 09:31:56,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 121 transitions, 282 flow [2024-11-20 09:31:56,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 121 transitions, 282 flow [2024-11-20 09:31:56,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:31:56,647 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;@6016a3b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:31:56,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 09:31:56,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:31:56,651 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-20 09:31:56,651 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 09:31:56,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:31:56,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 09:31:56,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-20 09:31:56,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:31:56,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1171918988, now seen corresponding path program 1 times [2024-11-20 09:31:56,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:31:56,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565477583] [2024-11-20 09:31:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:31:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:31:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:31:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:31:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:31:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565477583] [2024-11-20 09:31:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565477583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:31:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:31:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:31:56,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693171527] [2024-11-20 09:31:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:31:56,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:31:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:31:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:31:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:31:56,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 121 [2024-11-20 09:31:56,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:31:56,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:31:56,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 121 [2024-11-20 09:31:56,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand