./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd --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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:59:48,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:59:48,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:59:48,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:59:48,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:59:48,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:59:48,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:59:48,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:59:48,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:59:48,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:59:48,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:59:48,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:59:48,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:59:48,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:59:48,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:59:48,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:59:48,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:59:48,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:59:48,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:59:48,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:59:48,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:59:48,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:59:48,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:59:48,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:59:48,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:59:48,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:59:48,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:59:48,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:59:48,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:59:48,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:59:48,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:59:48,305 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_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2024-11-13 15:59:48,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:59:48,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:59:48,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:59:48,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:59:48,592 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:59:48,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread/stateful01-2.i Unable to find full path for "g++" [2024-11-13 15:59:50,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:59:50,835 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:59:50,836 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/sv-benchmarks/c/pthread/stateful01-2.i [2024-11-13 15:59:50,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/data/dacd0157b/c2303c7d37b648ca88ebeb14ea936e1e/FLAGe2eac7c48 [2024-11-13 15:59:50,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/data/dacd0157b/c2303c7d37b648ca88ebeb14ea936e1e [2024-11-13 15:59:50,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:59:50,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:59:50,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:59:50,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:59:50,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:59:50,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:59:50" (1/1) ... [2024-11-13 15:59:50,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3002b624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:50, skipping insertion in model container [2024-11-13 15:59:50,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:59:50" (1/1) ... [2024-11-13 15:59:50,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:59:51,336 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2024-11-13 15:59:51,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:59:51,367 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:59:51,438 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2024-11-13 15:59:51,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:59:51,486 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:59:51,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51 WrapperNode [2024-11-13 15:59:51,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:59:51,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:59:51,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:59:51,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:59:51,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,547 INFO L138 Inliner]: procedures = 171, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-13 15:59:51,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:59:51,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:59:51,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:59:51,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:59:51,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,589 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 8, 8]. 44 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 8, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-13 15:59:51,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:59:51,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:59:51,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:59:51,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:59:51,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (1/1) ... [2024-11-13 15:59:51,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:59:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:51,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:59:51,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:59:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:59:51,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:59:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:59:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:59:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:59:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:59:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:59:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:59:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:59:51,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:59:51,692 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:59:51,876 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:59:51,878 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:59:52,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:59:52,105 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:59:52,334 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:59:52,334 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 15:59:52,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:59:52 BoogieIcfgContainer [2024-11-13 15:59:52,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:59:52,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:59:52,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:59:52,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:59:52,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:59:50" (1/3) ... [2024-11-13 15:59:52,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ea515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:59:52, skipping insertion in model container [2024-11-13 15:59:52,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:51" (2/3) ... [2024-11-13 15:59:52,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ea515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:59:52, skipping insertion in model container [2024-11-13 15:59:52,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:59:52" (3/3) ... [2024-11-13 15:59:52,345 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2024-11-13 15:59:52,360 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:59:52,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG stateful01-2.i that has 3 procedures, 32 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 15:59:52,362 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:59:52,410 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:59:52,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 78 flow [2024-11-13 15:59:52,499 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2024-11-13 15:59:52,501 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:59:52,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 1/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-13 15:59:52,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 78 flow [2024-11-13 15:59:52,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2024-11-13 15:59:52,525 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:59:52,545 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;@39008471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:59:52,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 15:59:52,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:59:52,567 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-11-13 15:59:52,567 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:59:52,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:52,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:52,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:59:52,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1384319890, now seen corresponding path program 1 times [2024-11-13 15:59:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:52,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558115308] [2024-11-13 15:59:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558115308] [2024-11-13 15:59:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558115308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:59:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765073226] [2024-11-13 15:59:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:53,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:59:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:59:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:53,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-13 15:59:53,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:53,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-13 15:59:53,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:53,671 INFO L124 PetriNetUnfolderBase]: 271/538 cut-off events. [2024-11-13 15:59:53,671 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-13 15:59:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 538 events. 271/538 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2374 event pairs, 72 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 995. Up to 230 conditions per place. [2024-11-13 15:59:53,679 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 22 selfloop transitions, 2 changer transitions 25/54 dead transitions. [2024-11-13 15:59:53,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 230 flow [2024-11-13 15:59:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:59:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:59:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-11-13 15:59:53,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-13 15:59:53,699 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 5 states and 90 transitions. [2024-11-13 15:59:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 230 flow [2024-11-13 15:59:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:59:53,708 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 68 flow [2024-11-13 15:59:53,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-13 15:59:53,716 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-11-13 15:59:53,717 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 68 flow [2024-11-13 15:59:53,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:53,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:53,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:59:53,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:59:53,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1921701038, now seen corresponding path program 2 times [2024-11-13 15:59:53,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:53,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357818766] [2024-11-13 15:59:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:53,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357818766] [2024-11-13 15:59:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357818766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:53,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:53,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323779760] [2024-11-13 15:59:53,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:53,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:53,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:53,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-13 15:59:53,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:53,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-13 15:59:53,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:54,083 INFO L124 PetriNetUnfolderBase]: 65/155 cut-off events. [2024-11-13 15:59:54,083 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:59:54,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 155 events. 65/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 420 event pairs, 26 based on Foata normal form. 22/172 useless extension candidates. Maximal degree in co-relation 315. Up to 89 conditions per place. [2024-11-13 15:59:54,086 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 17 selfloop transitions, 8 changer transitions 2/33 dead transitions. [2024-11-13 15:59:54,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 136 flow [2024-11-13 15:59:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:59:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-13 15:59:54,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-13 15:59:54,088 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 68 flow. Second operand 3 states and 58 transitions. [2024-11-13 15:59:54,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 136 flow [2024-11-13 15:59:54,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 130 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 15:59:54,090 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 78 flow [2024-11-13 15:59:54,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-11-13 15:59:54,090 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-11-13 15:59:54,090 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 78 flow [2024-11-13 15:59:54,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:54,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:59:54,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:54,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:59:54,093 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 15:59:54,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash -689251992, now seen corresponding path program 3 times [2024-11-13 15:59:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619613665] [2024-11-13 15:59:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:54,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619613665] [2024-11-13 15:59:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619613665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:59:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975774548] [2024-11-13 15:59:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:54,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:59:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:59:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:54,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-13 15:59:54,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:54,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:59:54,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-13 15:59:54,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:59:54,485 INFO L124 PetriNetUnfolderBase]: 65/159 cut-off events. [2024-11-13 15:59:54,485 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-13 15:59:54,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 159 events. 65/159 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 447 event pairs, 12 based on Foata normal form. 1/158 useless extension candidates. Maximal degree in co-relation 127. Up to 104 conditions per place. [2024-11-13 15:59:54,486 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-11-13 15:59:54,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 150 flow [2024-11-13 15:59:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:59:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:59:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-13 15:59:54,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-13 15:59:54,489 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 78 flow. Second operand 5 states and 69 transitions. [2024-11-13 15:59:54,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 150 flow [2024-11-13 15:59:54,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:59:54,490 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-11-13 15:59:54,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-11-13 15:59:54,491 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2024-11-13 15:59:54,491 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-11-13 15:59:54,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:54,496 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-13 15:59:54,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-13 15:59:54,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 15:59:54,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:59:54,497 INFO L407 BasicCegarLoop]: Path program histogram: [3] [2024-11-13 15:59:54,502 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:59:54,503 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:59:54,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:59:54 BasicIcfg [2024-11-13 15:59:54,513 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:59:54,514 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:59:54,514 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:59:54,514 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:59:54,515 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:59:52" (3/4) ... [2024-11-13 15:59:54,518 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:59:54,521 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 15:59:54,521 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 15:59:54,528 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2024-11-13 15:59:54,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-13 15:59:54,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 15:59:54,529 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 15:59:54,611 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:59:54,611 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:59:54,611 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:59:54,613 INFO L158 Benchmark]: Toolchain (without parser) took 3744.50ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 62.9MB in the end (delta: 27.8MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-11-13 15:59:54,613 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:59:54,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.19ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 69.8MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:59:54,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.28ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 68.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:59:54,614 INFO L158 Benchmark]: Boogie Preprocessor took 66.17ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:59:54,615 INFO L158 Benchmark]: RCFGBuilder took 719.75ms. Allocated memory is still 117.4MB. Free memory was 66.5MB in the beginning and 89.2MB in the end (delta: -22.6MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2024-11-13 15:59:54,615 INFO L158 Benchmark]: TraceAbstraction took 2175.07ms. Allocated memory is still 117.4MB. Free memory was 88.5MB in the beginning and 67.1MB in the end (delta: 21.4MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2024-11-13 15:59:54,615 INFO L158 Benchmark]: Witness Printer took 97.60ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 62.9MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:59:54,618 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 83.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.19ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 69.8MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.28ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 68.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 66.17ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 719.75ms. Allocated memory is still 117.4MB. Free memory was 66.5MB in the beginning and 89.2MB in the end (delta: -22.6MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2175.07ms. Allocated memory is still 117.4MB. Free memory was 88.5MB in the beginning and 67.1MB in the end (delta: 21.4MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 97.60ms. Allocated memory is still 117.4MB. Free memory was 67.1MB in the beginning and 62.9MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 280 IncrementalHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 15:59:54,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a33eaa17-0122-4f4d-81a6-1a85ae1eabf2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE