./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -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 d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 01:06:46,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 01:06:46,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 01:06:46,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 01:06:46,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 01:06:46,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 01:06:46,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 01:06:46,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 01:06:46,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 01:06:46,488 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 01:06:46,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 01:06:46,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 01:06:46,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 01:06:46,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 01:06:46,491 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 01:06:46,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 01:06:46,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 01:06:46,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 01:06:46,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 01:06:46,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 01:06:46,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 01:06:46,496 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 01:06:46,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 01:06:46,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 01:06:46,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 01:06:46,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 01:06:46,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 01:06:46,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 01:06:46,497 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 01:06:46,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 01:06:46,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 01:06:46,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 01:06:46,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:46,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 01:06:46,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 01:06:46,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 01:06:46,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 01:06:46,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2024-11-10 01:06:46,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 01:06:46,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 01:06:46,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 01:06:46,821 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 01:06:46,822 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 01:06:46,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:48,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 01:06:48,496 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 01:06:48,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:48,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d602bf708/216ccd1b32a4402691bf048eb8973a0b/FLAG9b7d04936 [2024-11-10 01:06:48,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d602bf708/216ccd1b32a4402691bf048eb8973a0b [2024-11-10 01:06:48,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 01:06:48,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 01:06:48,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:48,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 01:06:48,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 01:06:48,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:48" (1/1) ... [2024-11-10 01:06:48,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188be56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:48, skipping insertion in model container [2024-11-10 01:06:48,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:48" (1/1) ... [2024-11-10 01:06:48,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 01:06:49,070 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-10 01:06:49,123 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-10 01:06:49,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:49,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 01:06:49,228 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-10 01:06:49,239 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-10 01:06:49,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:49,327 INFO L204 MainTranslator]: Completed translation [2024-11-10 01:06:49,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49 WrapperNode [2024-11-10 01:06:49,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:49,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:49,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 01:06:49,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 01:06:49,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,409 INFO L138 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 760 [2024-11-10 01:06:49,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:49,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 01:06:49,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 01:06:49,414 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 01:06:49,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,457 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 01:06:49,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 01:06:49,495 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 01:06:49,495 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 01:06:49,496 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 01:06:49,496 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (1/1) ... [2024-11-10 01:06:49,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 01:06:49,534 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) [2024-11-10 01:06:49,538 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 [2024-11-10 01:06:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 01:06:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-10 01:06:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-10 01:06:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-10 01:06:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-10 01:06:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-10 01:06:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-10 01:06:49,579 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-10 01:06:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-10 01:06:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-10 01:06:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-10 01:06:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-10 01:06:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-10 01:06:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-10 01:06:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-10 01:06:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-10 01:06:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-10 01:06:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-10 01:06:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-10 01:06:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-10 01:06:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-10 01:06:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-10 01:06:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-10 01:06:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 01:06:49,583 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-10 01:06:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-10 01:06:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-10 01:06:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-10 01:06:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 01:06:49,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 01:06:49,584 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-10 01:06:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-10 01:06:49,585 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-10 01:06:49,585 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-10 01:06:49,702 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 01:06:49,704 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 01:06:50,412 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-10 01:06:50,415 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 01:06:50,435 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 01:06:50,436 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 01:06:50,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:50 BoogieIcfgContainer [2024-11-10 01:06:50,436 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 01:06:50,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 01:06:50,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 01:06:50,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 01:06:50,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:06:48" (1/3) ... [2024-11-10 01:06:50,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e13e513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:50, skipping insertion in model container [2024-11-10 01:06:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:49" (2/3) ... [2024-11-10 01:06:50,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e13e513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:50, skipping insertion in model container [2024-11-10 01:06:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:50" (3/3) ... [2024-11-10 01:06:50,442 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:50,458 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 01:06:50,459 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 01:06:50,519 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 01:06:50,524 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;@6945e384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 01:06:50,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 01:06:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 428 states, 363 states have (on average 1.5537190082644627) internal successors, (564), 381 states have internal predecessors, (564), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-10 01:06:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-10 01:06:50,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 01:06:50,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 01:06:50,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 01:06:50,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 01:06:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 148347408, now seen corresponding path program 1 times [2024-11-10 01:06:50,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 01:06:50,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630951761] [2024-11-10 01:06:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 01:06:50,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 01:06:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:50,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-10 01:06:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:50,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-10 01:06:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-10 01:06:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-10 01:06:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-10 01:06:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 01:06:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-10 01:06:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 01:06:51,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 01:06:51,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630951761] [2024-11-10 01:06:51,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630951761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 01:06:51,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 01:06:51,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 01:06:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806703121] [2024-11-10 01:06:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 01:06:51,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 01:06:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 01:06:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 01:06:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 01:06:51,110 INFO L87 Difference]: Start difference. First operand has 428 states, 363 states have (on average 1.5537190082644627) internal successors, (564), 381 states have internal predecessors, (564), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-10 01:06:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 01:06:51,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-10 01:06:51,472 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 153 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 01:06:51,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 151 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 01:06:51,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 01:06:51,478 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor1(BasicAbstractInterpolantAutomaton.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:65) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:373) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-10 01:06:51,482 INFO L158 Benchmark]: Toolchain (without parser) took 2634.66ms. Allocated memory was 167.8MB in the beginning and 230.7MB in the end (delta: 62.9MB). Free memory was 94.8MB in the beginning and 174.0MB in the end (delta: -79.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:51,483 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 119.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:51,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.46ms. Allocated memory was 167.8MB in the beginning and 230.7MB in the end (delta: 62.9MB). Free memory was 94.5MB in the beginning and 193.4MB in the end (delta: -98.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-11-10 01:06:51,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.21ms. Allocated memory is still 230.7MB. Free memory was 193.4MB in the beginning and 189.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:51,484 INFO L158 Benchmark]: Boogie Preprocessor took 84.68ms. Allocated memory is still 230.7MB. Free memory was 189.2MB in the beginning and 185.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:51,484 INFO L158 Benchmark]: IcfgBuilder took 940.92ms. Allocated memory is still 230.7MB. Free memory was 185.9MB in the beginning and 125.3MB in the end (delta: 60.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-10 01:06:51,488 INFO L158 Benchmark]: TraceAbstraction took 1044.04ms. Allocated memory is still 230.7MB. Free memory was 124.2MB in the beginning and 174.0MB in the end (delta: -49.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:51,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 119.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.46ms. Allocated memory was 167.8MB in the beginning and 230.7MB in the end (delta: 62.9MB). Free memory was 94.5MB in the beginning and 193.4MB in the end (delta: -98.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.21ms. Allocated memory is still 230.7MB. Free memory was 193.4MB in the beginning and 189.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.68ms. Allocated memory is still 230.7MB. Free memory was 189.2MB in the beginning and 185.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 940.92ms. Allocated memory is still 230.7MB. Free memory was 185.9MB in the beginning and 125.3MB in the end (delta: 60.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1044.04ms. Allocated memory is still 230.7MB. Free memory was 124.2MB in the beginning and 174.0MB in the end (delta: -49.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor1(BasicAbstractInterpolantAutomaton.java:99) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-10 01:06:51,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 01:06:53,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 01:06:53,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-10 01:06:53,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 01:06:53,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 01:06:53,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 01:06:53,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 01:06:53,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 01:06:53,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 01:06:53,714 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 01:06:53,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 01:06:53,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 01:06:53,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 01:06:53,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 01:06:53,716 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 01:06:53,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 01:06:53,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 01:06:53,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 01:06:53,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 01:06:53,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 01:06:53,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 01:06:53,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 01:06:53,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 01:06:53,722 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 01:06:53,722 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 01:06:53,722 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 01:06:53,723 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 01:06:53,723 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:53,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 01:06:53,724 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 01:06:53,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 01:06:53,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 01:06:53,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 01:06:53,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2024-11-10 01:06:54,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 01:06:54,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 01:06:54,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 01:06:54,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 01:06:54,031 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 01:06:54,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:55,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 01:06:55,712 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 01:06:55,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:55,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c247d390/1532c75f01794ccbb08a501b9a3fcf9d/FLAG401f55dcc [2024-11-10 01:06:55,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c247d390/1532c75f01794ccbb08a501b9a3fcf9d [2024-11-10 01:06:55,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 01:06:55,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 01:06:55,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:55,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 01:06:55,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 01:06:55,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:55" (1/1) ... [2024-11-10 01:06:55,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417b16a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:55, skipping insertion in model container [2024-11-10 01:06:55,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:06:55" (1/1) ... [2024-11-10 01:06:55,797 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 01:06:55,956 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-10 01:06:56,011 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-10 01:06:56,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:56,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 01:06:56,094 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-10 01:06:56,111 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/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-10 01:06:56,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 01:06:56,182 INFO L204 MainTranslator]: Completed translation [2024-11-10 01:06:56,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56 WrapperNode [2024-11-10 01:06:56,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 01:06:56,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:56,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 01:06:56,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 01:06:56,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,273 INFO L138 Inliner]: procedures = 68, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 730 [2024-11-10 01:06:56,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 01:06:56,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 01:06:56,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 01:06:56,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 01:06:56,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,318 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 01:06:56,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,335 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 01:06:56,356 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 01:06:56,357 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 01:06:56,357 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 01:06:56,358 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (1/1) ... [2024-11-10 01:06:56,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 01:06:56,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 01:06:56,385 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) [2024-11-10 01:06:56,388 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 [2024-11-10 01:06:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 01:06:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-10 01:06:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-10 01:06:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-10 01:06:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-10 01:06:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-10 01:06:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-10 01:06:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-10 01:06:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-10 01:06:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-10 01:06:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-10 01:06:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-10 01:06:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-10 01:06:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-10 01:06:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-10 01:06:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-10 01:06:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-10 01:06:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 01:06:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-10 01:06:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-10 01:06:56,431 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-10 01:06:56,432 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-10 01:06:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-10 01:06:56,432 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-10 01:06:56,432 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-10 01:06:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-10 01:06:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-10 01:06:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-10 01:06:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 01:06:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 01:06:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-10 01:06:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-10 01:06:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-10 01:06:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-10 01:06:56,525 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 01:06:56,527 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 01:06:57,276 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-10 01:06:57,277 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 01:06:57,291 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 01:06:57,292 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 01:06:57,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:57 BoogieIcfgContainer [2024-11-10 01:06:57,292 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 01:06:57,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 01:06:57,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 01:06:57,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 01:06:57,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:06:55" (1/3) ... [2024-11-10 01:06:57,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3c5176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:57, skipping insertion in model container [2024-11-10 01:06:57,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:06:56" (2/3) ... [2024-11-10 01:06:57,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3c5176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:06:57, skipping insertion in model container [2024-11-10 01:06:57,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:06:57" (3/3) ... [2024-11-10 01:06:57,298 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-10 01:06:57,310 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 01:06:57,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 01:06:57,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 01:06:57,386 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;@6e005b65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 01:06:57,387 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 01:06:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 428 states, 363 states have (on average 1.5537190082644627) internal successors, (564), 381 states have internal predecessors, (564), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-10 01:06:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-10 01:06:57,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 01:06:57,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 01:06:57,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 01:06:57,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 01:06:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash 148347408, now seen corresponding path program 1 times [2024-11-10 01:06:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 01:06:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408861174] [2024-11-10 01:06:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 01:06:57,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 01:06:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 01:06:57,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-10 01:06:57,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-10 01:06:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 01:06:57,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 01:06:57,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 01:06:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 01:06:57,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 01:06:57,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 01:06:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408861174] [2024-11-10 01:06:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408861174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 01:06:57,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 01:06:57,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 01:06:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979236731] [2024-11-10 01:06:57,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 01:06:57,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 01:06:57,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 01:06:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 01:06:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 01:06:57,632 INFO L87 Difference]: Start difference. First operand has 428 states, 363 states have (on average 1.5537190082644627) internal successors, (564), 381 states have internal predecessors, (564), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 01:06:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 01:06:57,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 01:06:57,734 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 54 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 01:06:57,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 176 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 01:06:57,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-10 01:06:57,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-10 01:06:57,937 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor1(BasicAbstractInterpolantAutomaton.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:65) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:373) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-10 01:06:57,943 INFO L158 Benchmark]: Toolchain (without parser) took 2198.31ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 60.6MB in the beginning and 60.6MB in the end (delta: -46.2kB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2024-11-10 01:06:57,943 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 83.9MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:57,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.63ms. Allocated memory is still 83.9MB. Free memory was 60.6MB in the beginning and 59.3MB in the end (delta: 1.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-11-10 01:06:57,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.92ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 55.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:57,944 INFO L158 Benchmark]: Boogie Preprocessor took 81.04ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 51.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 01:06:57,946 INFO L158 Benchmark]: IcfgBuilder took 936.37ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 51.4MB in the beginning and 53.7MB in the end (delta: -2.3MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-11-10 01:06:57,947 INFO L158 Benchmark]: TraceAbstraction took 648.61ms. Allocated memory is still 123.7MB. Free memory was 53.0MB in the beginning and 60.6MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 01:06:57,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 83.9MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.63ms. Allocated memory is still 83.9MB. Free memory was 60.6MB in the beginning and 59.3MB in the end (delta: 1.3MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.92ms. Allocated memory is still 83.9MB. Free memory was 59.3MB in the beginning and 55.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.04ms. Allocated memory is still 83.9MB. Free memory was 55.2MB in the beginning and 51.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 936.37ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 51.4MB in the beginning and 53.7MB in the end (delta: -2.3MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * TraceAbstraction took 648.61ms. Allocated memory is still 123.7MB. Free memory was 53.0MB in the beginning and 60.6MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor1(BasicAbstractInterpolantAutomaton.java:99) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-10 01:06:57,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null